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stringlengths 73
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@Override
public ImageSource apply(ImageSource input) {
final int[][] pixelMatrix = new int[3][3];
int w = input.getWidth();
int h = input.getHeight();
int[][] output = new int[h][w];
for (int j = 1; j < h - 1; j++) {
for (int i = 1; i < w - 1; i++) {
pixelMatrix[0][0] = input.getR(i - 1, j - 1);
pixelMatrix[0][1] = input.getRGB(i - 1, j);
pixelMatrix[0][2] = input.getRGB(i - 1, j + 1);
pixelMatrix[1][0] = input.getRGB(i, j - 1);
pixelMatrix[1][2] = input.getRGB(i, j + 1);
pixelMatrix[2][0] = input.getRGB(i + 1, j - 1);
pixelMatrix[2][1] = input.getRGB(i + 1, j);
pixelMatrix[2][2] = input.getRGB(i + 1, j + 1);
int edge = (int) convolution(pixelMatrix);
int rgb = (edge << 16 | edge << 8 | edge);
output[j][i] = rgb;
}
}
MatrixSource source = new MatrixSource(output);
return source;
} | apply |
public <L extends Listener> void popEvent(Event<?, L> expected) {
synchronized (this.stack) {
final Event<?, ?> actual = this.stack.pop();
if (actual != expected) {
throw new IllegalStateException(String.format(
"Unbalanced pop: expected '%s' but encountered '%s'",
expected.getListenerClass(), actual));
}
}
} | popEvent |
protected void modify(Transaction t) {
try {
this.lock.writeLock().lock();
t.perform();
} finally {
this.lock.writeLock().unlock();
}
} | modify |
protected <E> E read(Supplier<E> sup) {
try {
this.lock.readLock().lock();
return sup.get();
} finally {
this.lock.readLock().unlock();
}
} | read |
protected void setOffsetAndLength(long offset, int length) throws IOException {
this.offset = offset;
this.length = length;
this.position = 0;
if (subStream.position() != offset) {
subStream.seek(offset);
}
} | setOffsetAndLength |
public static double J0(double x) {
double ax;
if ((ax = Math.abs(x)) < 8.0) {
double y = x * x;
double ans1 = 57568490574.0 + y * (-13362590354.0 + y * (651619640.7
+ y * (-11214424.18 + y * (77392.33017 + y * (-184.9052456)))));
double ans2 = 57568490411.0 + y * (1029532985.0 + y * (9494680.718
+ y * (59272.64853 + y * (267.8532712 + y * 1.0))));
return ans1 / ans2;
} else {
double z = 8.0 / ax;
double y = z * z;
double xx = ax - 0.785398164;
double ans1 = 1.0 + y * (-0.1098628627e-2 + y * (0.2734510407e-4
+ y * (-0.2073370639e-5 + y * 0.2093887211e-6)));
double ans2 = -0.1562499995e-1 + y * (0.1430488765e-3
+ y * (-0.6911147651e-5 + y * (0.7621095161e-6
- y * 0.934935152e-7)));
return Math.sqrt(0.636619772 / ax) *
(Math.cos(xx) * ans1 - z * Math.sin(xx) * ans2);
}
} | J0 |
public static double J(int n, double x) {
int j, m;
double ax, bj, bjm, bjp, sum, tox, ans;
boolean jsum;
double ACC = 40.0;
double BIGNO = 1.0e+10;
double BIGNI = 1.0e-10;
if (n == 0) return J0(x);
if (n == 1) return J(x);
ax = Math.abs(x);
if (ax == 0.0) return 0.0;
else if (ax > (double) n) {
tox = 2.0 / ax;
bjm = J0(ax);
bj = J(ax);
for (j = 1; j < n; j++) {
bjp = j * tox * bj - bjm;
bjm = bj;
bj = bjp;
}
ans = bj;
} else {
tox = 2.0 / ax;
m = 2 * ((n + (int) Math.sqrt(ACC * n)) / 2);
jsum = false;
bjp = ans = sum = 0.0;
bj = 1.0;
for (j = m; j > 0; j--) {
bjm = j * tox * bj - bjp;
bjp = bj;
bj = bjm;
if (Math.abs(bj) > BIGNO) {
bj *= BIGNI;
bjp *= BIGNI;
ans *= BIGNI;
sum *= BIGNI;
}
if (jsum) sum += bj;
jsum = !jsum;
if (j == n) ans = bjp;
}
sum = 2.0 * sum - bj;
ans /= sum;
}
return x < 0.0 && n % 2 == 1 ? -ans : ans;
} | J |
public static double Y0(double x) {
if (x < 8.0) {
double y = x * x;
double ans1 = -2957821389.0 + y * (7062834065.0 + y * (-512359803.6
+ y * (10879881.29 + y * (-86327.92757 + y * 228.4622733))));
double ans2 = 40076544269.0 + y * (745249964.8 + y * (7189466.438
+ y * (47447.26470 + y * (226.1030244 + y * 1.0))));
return (ans1 / ans2) + 0.636619772 * J0(x) * Math.log(x);
} else {
double z = 8.0 / x;
double y = z * z;
double xx = x - 0.785398164;
double ans1 = 1.0 + y * (-0.1098628627e-2 + y * (0.2734510407e-4
+ y * (-0.2073370639e-5 + y * 0.2093887211e-6)));
double ans2 = -0.1562499995e-1 + y * (0.1430488765e-3
+ y * (-0.6911147651e-5 + y * (0.7621095161e-6
+ y * (-0.934945152e-7))));
return Math.sqrt(0.636619772 / x) *
(Math.sin(xx) * ans1 + z * Math.cos(xx) * ans2);
}
} | Y0 |
public static double Y(double x) {
if (x < 8.0) {
double y = x * x;
double ans1 = x * (-0.4900604943e13 + y * (0.1275274390e13
+ y * (-0.5153438139e11 + y * (0.7349264551e9
+ y * (-0.4237922726e7 + y * 0.8511937935e4)))));
double ans2 = 0.2499580570e14 + y * (0.4244419664e12
+ y * (0.3733650367e10 + y * (0.2245904002e8
+ y * (0.1020426050e6 + y * (0.3549632885e3 + y)))));
return (ans1 / ans2) + 0.636619772 * (J(x) * Math.log(x) - 1.0 / x);
} else {
double z = 8.0 / x;
double y = z * z;
double xx = x - 2.356194491;
double ans1 = 1.0 + y * (0.183105e-2 + y * (-0.3516396496e-4
+ y * (0.2457520174e-5 + y * (-0.240337019e-6))));
double ans2 = 0.04687499995 + y * (-0.2002690873e-3
+ y * (0.8449199096e-5 + y * (-0.88228987e-6
+ y * 0.105787412e-6)));
return Math.sqrt(0.636619772 / x) *
(Math.sin(xx) * ans1 + z * Math.cos(xx) * ans2);
}
} | Y |
public static double Y(int n, double x) {
double by, bym, byp, tox;
if (n == 0) return Y0(x);
if (n == 1) return Y(x);
tox = 2.0 / x;
by = Y(x);
bym = Y0(x);
for (int j = 1; j < n; j++) {
byp = j * tox * by - bym;
bym = by;
by = byp;
}
return by;
} | Y |
public static double I0(double x) {
double ans;
double ax = Math.abs(x);
if (ax < 3.75) {
double y = x / 3.75;
y = y * y;
ans = 1.0 + y * (3.5156229 + y * (3.0899424 + y * (1.2067492
+ y * (0.2659732 + y * (0.360768e-1 + y * 0.45813e-2)))));
} else {
double y = 3.75 / ax;
ans = (Math.exp(ax) / Math.sqrt(ax)) * (0.39894228 + y * (0.1328592e-1
+ y * (0.225319e-2 + y * (-0.157565e-2 + y * (0.916281e-2
+ y * (-0.2057706e-1 + y * (0.2635537e-1 + y * (-0.1647633e-1
+ y * 0.392377e-2))))))));
}
return ans;
} | I0 |
public static double I(int n, double x) {
if (n < 0)
throw new IllegalArgumentException("the variable n out of range.");
else if (n == 0)
return I0(x);
else if (n == 1)
return I(x);
if (x == 0.0)
return 0.0;
double ACC = 40.0;
double BIGNO = 1.0e+10;
double BIGNI = 1.0e-10;
double tox = 2.0 / Math.abs(x);
double bip = 0, ans = 0.0;
double bi = 1.0;
for (int j = 2 * (n + (int) Math.sqrt(ACC * n)); j > 0; j--) {
double bim = bip + j * tox * bi;
bip = bi;
bi = bim;
if (Math.abs(bi) > BIGNO) {
ans *= BIGNI;
bi *= BIGNI;
bip *= BIGNI;
}
if (j == n)
ans = bip;
}
ans *= I0(x) / bi;
return x < 0.0 && n % 2 == 1 ? -ans : ans;
} | I |
@Override
public ImageSource apply(ImageSource input) {
int w = input.getWidth();
int h = input.getHeight();
MatrixSource output = new MatrixSource(input);
Vector3 n = new Vector3(0, 0, 1);
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
if (x < border || x == w - border || y < border || y == h - border) {
output.setRGB(x, y, VectorHelper.Z_NORMAL);
continue;
}
float s0 = input.getR(x - 1, y + 1);
float s1 = input.getR(x, y + 1);
float s2 = input.getR(x + 1, y + 1);
float s3 = input.getR(x - 1, y);
float s5 = input.getR(x + 1, y);
float s6 = input.getR(x - 1, y - 1);
float s7 = input.getR(x, y - 1);
float s8 = input.getR(x + 1, y - 1);
float nx = -(s2 - s0 + 2 * (s5 - s3) + s8 - s6);
float ny = -(s6 - s0 + 2 * (s7 - s1) + s8 - s2);
n.set(nx, ny, scale);
n.nor();
int rgb = VectorHelper.vectorToColor(n);
output.setRGB(x, y, rgb);
}
}
return new MatrixSource(output);
} | apply |
@Deprecated
public static TraceContextHolder wrap(TraceContext traceContext) {
return (traceContext != null) ? new TraceContextHolder(traceContext) : TraceContextHolder.EMPTY;
} | wrap |
public static double Sinc(double x) {
return Math.sin(Math.PI * x) / (Math.PI * x);
} | Sinc |
public static int Mod(int x, int m) {
if (m < 0) m = -m;
int r = x % m;
return r < 0 ? r + m : r;
} | Mod |
public static int NextPowerOf2(int x) {
--x;
x |= x >> 1;
x |= x >> 2;
x |= x >> 4;
x |= x >> 8;
x |= x >> 16;
return ++x;
} | NextPowerOf2 |
public static float Sum(float[] data) {
float sum = 0;
for (int i = 0; i < data.length; i++) {
sum += data[i];
}
return sum;
} | Sum |
public static double TruncatedPower(double value, double degree) {
double x = Math.pow(value, degree);
return (x > 0) ? x : 0.0;
} | TruncatedPower |
public static int[] Unique(int[] values) {
HashSet<Integer> lst = new HashSet<Integer>();
for (int i = 0; i < values.length; i++) {
lst.add(values[i]);
}
int[] v = new int[lst.size()];
Iterator<Integer> it = lst.iterator();
for (int i = 0; i < v.length; i++) {
v[i] = it.next();
}
return v;
} | Unique |
public void setT(int t) {
this.t = Math.min((radius * 2 + 1) * (radius * 2 + 1) / 2, Math.max(0, t));
} | setT |
public static double Sin(double x, int nTerms) {
if (nTerms < 2) return x;
if (nTerms == 2) {
return x - (x * x * x) / 6D;
} else {
double mult = x * x * x;
double fact = 6;
double sign = 1;
int factS = 5;
double result = x - mult / fact;
for (int i = 3; i <= nTerms; i++) {
mult *= x * x;
fact *= factS * (factS - 1);
factS += 2;
result += sign * (mult / fact);
sign *= -1;
}
return result;
}
} | Sin |
public static double Sinh(double x, int nTerms) {
if (nTerms < 2) return x;
if (nTerms == 2) {
return x + (x * x * x) / 6D;
} else {
double mult = x * x * x;
double fact = 6;
int factS = 5;
double result = x + mult / fact;
for (int i = 3; i <= nTerms; i++) {
mult *= x * x;
fact *= factS * (factS - 1);
factS += 2;
result += mult / fact;
}
return result;
}
} | Sinh |
public static double Cosh(double x, int nTerms) {
if (nTerms < 2) return x;
if (nTerms == 2) {
return 1 + (x * x) / 2D;
} else {
double mult = x * x;
double fact = 2;
int factS = 4;
double result = 1 + mult / fact;
for (int i = 3; i <= nTerms; i++) {
mult *= x * x;
fact *= factS * (factS - 1);
factS += 2;
result += mult / fact;
}
return result;
}
} | Cosh |
public static double Exp(double x, int nTerms) {
if (nTerms < 2) return 1 + x;
if (nTerms == 2) {
return 1 + x + (x * x) / 2;
} else {
double mult = x * x;
double fact = 2;
double result = 1 + x + mult / fact;
for (int i = 3; i <= nTerms; i++) {
mult *= x;
fact *= i;
result += mult / fact;
}
return result;
}
} | Exp |
public double[][] getU() {
double[][] X = new double[n][n];
double[][] U = X;
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (i <= j) {
U[i][j] = LU[i][j];
} else {
U[i][j] = 0.0;
}
}
}
return X;
} | getU |
public double determinant() {
if (m != n) {
throw new IllegalArgumentException("Matrix must be square.");
}
double d = (double) pivsign;
for (int j = 0; j < n; j++) {
d *= LU[j][j];
}
return d;
} | determinant |
public static ComplexNumber Add(ComplexNumber z1, ComplexNumber z2) {
return new ComplexNumber(z1.real + z2.real, z1.imaginary + z2.imaginary);
} | Add |
public static ComplexNumber Add(ComplexNumber z1, double scalar) {
return new ComplexNumber(z1.real + scalar, z1.imaginary);
} | Add |
public static ComplexNumber Subtract(ComplexNumber z1, ComplexNumber z2) {
return new ComplexNumber(z1.real - z2.real, z1.imaginary - z2.imaginary);
} | Subtract |
public static ComplexNumber Subtract(ComplexNumber z1, double scalar) {
return new ComplexNumber(z1.real - scalar, z1.imaginary);
} | Subtract |
public static double Magnitude(ComplexNumber z) {
return Math.sqrt(z.real * z.real + z.imaginary * z.imaginary);
} | Magnitude |
public static ComplexNumber Multiply(ComplexNumber z1, ComplexNumber z2) {
double z1R = z1.real, z1I = z1.imaginary;
double z2R = z2.real, z2I = z2.imaginary;
return new ComplexNumber(z1R * z2R - z1I * z2I, z1R * z2I + z1I * z2R);
} | Multiply |
public static ComplexNumber Multiply(ComplexNumber z1, double scalar) {
return new ComplexNumber(z1.real * scalar, z1.imaginary * scalar);
} | Multiply |
public static ComplexNumber Divide(ComplexNumber z1, ComplexNumber z2) {
ComplexNumber conj = ComplexNumber.Conjugate(z2);
double a = z1.real * conj.real + ((z1.imaginary * conj.imaginary) * -1);
double b = z1.real * conj.imaginary + (z1.imaginary * conj.real);
double c = z2.real * conj.real + ((z2.imaginary * conj.imaginary) * -1);
return new ComplexNumber(a / c, b / c);
} | Divide |
public static ComplexNumber Pow(ComplexNumber z1, double n) {
double norm = Math.pow(z1.getMagnitude(), n);
double angle = 360 - Math.abs(Math.toDegrees(Math.atan(z1.imaginary / z1.real)));
double common = n * angle;
double r = norm * Math.cos(Math.toRadians(common));
double i = norm * Math.sin(Math.toRadians(common));
return new ComplexNumber(r, i);
} | Pow |
public static ComplexNumber Sin(ComplexNumber z1) {
ComplexNumber result = new ComplexNumber();
if (z1.imaginary == 0.0) {
result.real = Math.sin(z1.real);
result.imaginary = 0.0;
} else {
result.real = Math.sin(z1.real) * Math.cosh(z1.imaginary);
result.imaginary = Math.cos(z1.real) * Math.sinh(z1.imaginary);
}
return result;
} | Sin |
public static ComplexNumber Tan(ComplexNumber z1) {
ComplexNumber result = new ComplexNumber();
if (z1.imaginary == 0.0) {
result.real = Math.tan(z1.real);
result.imaginary = 0.0;
} else {
double real2 = 2 * z1.real;
double imag2 = 2 * z1.imaginary;
double denom = Math.cos(real2) + Math.cosh(real2);
result.real = Math.sin(real2) / denom;
result.imaginary = Math.sinh(imag2) / denom;
}
return result;
} | Tan |
private void srand(int ijkl) {
u = new double[97];
int ij = ijkl / 30082;
int kl = ijkl % 30082;
// Handle the seed range errors
// First random number seed must be between 0 and 31328
// Second seed must have a value between 0 and 30081
if (ij < 0 || ij > 31328 || kl < 0 || kl > 30081) {
ij = ij % 31329;
kl = kl % 30082;
}
int i = ((ij / 177) % 177) + 2;
int j = (ij % 177) + 2;
int k = ((kl / 169) % 178) + 1;
int l = kl % 169;
int m;
double s, t;
for (int ii = 0; ii < 97; ii++) {
s = 0.0;
t = 0.5;
for (int jj = 0; jj < 24; jj++) {
m = (((i * j) % 179) * k) % 179;
i = j;
j = k;
k = m;
l = (53 * l + 1) % 169;
if (((l * m) % 64) >= 32) {
s += t;
}
t *= 0.5;
}
u[ii] = s;
}
c = 362436.0 / 16777216.0;
cd = 7654321.0 / 16777216.0;
cm = 16777213.0 / 16777216.0;
i97 = 96;
j97 = 32;
} | srand |
public float DistanceTo(IntPoint anotherPoint) {
float dx = this.x - anotherPoint.x;
float dy = this.y - anotherPoint.y;
return (float) Math.sqrt(dx * dx + dy * dy);
} | DistanceTo |
public static double Entropy( int[] values ){
int n = values.length;
int total = 0;
double entropy = 0;
double p;
// calculate total amount of hits
for ( int i = 0; i < n; i++ )
{
total += values[i];
}
if ( total != 0 )
{
// for all values
for ( int i = 0; i < n; i++ )
{
// get item's probability
p = (double) values[i] / total;
// calculate entropy
if ( p != 0 )
entropy += ( -p * (Math.log10(p)/Math.log10(2)) );
}
}
return entropy;
} | Entropy |
public static IntRange GetRange( int[] values, double percent ){
int total = 0, n = values.length;
// for all values
for ( int i = 0; i < n; i++ )
{
// accumalate total
total += values[i];
}
int min, max, hits;
int h = (int) ( total * ( percent + ( 1 - percent ) / 2 ) );
// get range min value
for ( min = 0, hits = total; min < n; min++ )
{
hits -= values[min];
if ( hits < h )
break;
}
// get range max value
for ( max = n - 1, hits = total; max >= 0; max-- )
{
hits -= values[max];
if ( hits < h )
break;
}
return new IntRange( min, max );
} | GetRange |
public static int Median( int[] values ){
int total = 0, n = values.length;
// for all values
for ( int i = 0; i < n; i++ )
{
// accumalate total
total += values[i];
}
int halfTotal = total / 2;
int median = 0, v = 0;
// find median value
for ( ; median < n; median++ )
{
v += values[median];
if ( v >= halfTotal )
break;
}
return median;
} | Median |
public static int Mode( int[] values ){
int mode = 0, curMax = 0;
for ( int i = 0, length = values.length; i < length; i++ )
{
if ( values[i] > curMax )
{
curMax = values[i];
mode = i;
}
}
return mode;
} | Mode |
public static double StdDev( int[] values, double mean ){
double stddev = 0;
double diff;
int hits;
int total = 0;
// for all values
for ( int i = 0, n = values.length; i < n; i++ )
{
hits = values[i];
diff = (double) i - mean;
// accumulate std.dev.
stddev += diff * diff * hits;
// accumalate total
total += hits;
}
return ( total == 0 ) ? 0 : Math.sqrt( stddev / (total - 1) );
} | StdDev |
public static void Forward(double[] data) {
double[] result = new double[data.length];
double sum;
double scale = Math.sqrt(2.0 / data.length);
for (int f = 0; f < data.length; f++) {
sum = 0;
for (int t = 0; t < data.length; t++) {
double cos = Math.cos(((2.0 * t + 1.0) * f * Math.PI) / (2.0 * data.length));
sum += data[t] * cos * alpha(f);
}
result[f] = scale * sum;
}
for (int i = 0; i < data.length; i++) {
data[i] = result[i];
}
} | Forward |
public static void Forward(double[][] data) {
int rows = data.length;
int cols = data[0].length;
double[] row = new double[cols];
double[] col = new double[rows];
for (int i = 0; i < rows; i++) {
for (int j = 0; j < row.length; j++)
row[j] = data[i][j];
Forward(row);
for (int j = 0; j < row.length; j++)
data[i][j] = row[j];
}
for (int j = 0; j < cols; j++) {
for (int i = 0; i < col.length; i++)
col[i] = data[i][j];
Forward(col);
for (int i = 0; i < col.length; i++)
data[i][j] = col[i];
}
} | Forward |
public static void Backward(double[] data) {
double[] result = new double[data.length];
double sum;
double scale = Math.sqrt(2.0 / data.length);
for (int t = 0; t < data.length; t++) {
sum = 0;
for (int j = 0; j < data.length; j++) {
double cos = Math.cos(((2 * t + 1) * j * Math.PI) / (2 * data.length));
sum += alpha(j) * data[j] * cos;
}
result[t] = scale * sum;
}
for (int i = 0; i < data.length; i++) {
data[i] = result[i];
}
} | Backward |
public void setInRGB(IntRange inRGB) {
this.inRed = inRGB;
this.inGreen = inRGB;
this.inBlue = inRGB;
CalculateMap(inRGB, outRed, mapRed);
CalculateMap(inRGB, outGreen, mapGreen);
CalculateMap(inRGB, outBlue, mapBlue);
} | setInRGB |
public void setOutRGB(IntRange outRGB) {
this.outRed = outRGB;
this.outGreen = outRGB;
this.outBlue = outRGB;
CalculateMap(inRed, outRGB, mapRed);
CalculateMap(inGreen, outRGB, mapGreen);
CalculateMap(inBlue, outRGB, mapBlue);
} | setOutRGB |
private void CalculateMap(IntRange inRange, IntRange outRange, int[] map) {
double k = 0, b = 0;
if (inRange.getMax() != inRange.getMin()) {
k = (double) (outRange.getMax() - outRange.getMin()) / (double) (inRange.getMax() - inRange.getMin());
b = (double) (outRange.getMin()) - k * inRange.getMin();
}
for (int i = 0; i < 256; i++) {
int v = (int) i;
if (v >= inRange.getMax())
v = outRange.getMax();
else if (v <= inRange.getMin())
v = outRange.getMin();
else
v = (int) (k * v + b);
map[i] = v;
}
} | CalculateMap |
public static int Maximum(ImageSource fastBitmap, int startX, int startY, int width, int height) {
int max = 0;
if (fastBitmap.isGrayscale()) {
for (int i = startX; i < height; i++) {
for (int j = startY; j < width; j++) {
int gray = fastBitmap.getRGB(j, i);
if (gray > max) {
max = gray;
}
}
}
} else {
for (int i = startX; i < height; i++) {
for (int j = startY; j < width; j++) {
int gray = fastBitmap.getG(j, i);
if (gray > max) {
max = gray;
}
}
}
}
return max;
} | Maximum |
public static int Minimum(ImageSource fastBitmap, int startX, int startY, int width, int height) {
int min = 255;
if (fastBitmap.isGrayscale()) {
for (int i = startX; i < height; i++) {
for (int j = startY; j < width; j++) {
int gray = fastBitmap.getRGB(j, i);
if (gray < min) {
min = gray;
}
}
}
} else {
for (int i = startX; i < height; i++) {
for (int j = startY; j < width; j++) {
int gray = fastBitmap.getG(j, i);
if (gray < min) {
min = gray;
}
}
}
}
return min;
} | Minimum |
public static double Bhattacharyya(double[] histogram1, double[] histogram2) {
int bins = histogram1.length; // histogram bins
double b = 0; // Bhattacharyya's coefficient
for (int i = 0; i < bins; i++)
b += Math.sqrt(histogram1[i]) * Math.sqrt(histogram2[i]);
// Bhattacharyya distance between the two distributions
return Math.sqrt(1.0 - b);
} | Bhattacharyya |
public static double ChiSquare(double[] histogram1, double[] histogram2) {
double r = 0;
for (int i = 0; i < histogram1.length; i++) {
double t = histogram1[i] + histogram2[i];
if (t != 0)
r += Math.pow(histogram1[i] - histogram2[i], 2) / t;
}
return 0.5 * r;
} | ChiSquare |
public static double Correlation(double[] p, double[] q) {
double x = 0;
double y = 0;
for (int i = 0; i < p.length; i++) {
x += -p[i];
y += -q[i];
}
x /= p.length;
y /= q.length;
double num = 0;
double den1 = 0;
double den2 = 0;
for (int i = 0; i < p.length; i++) {
num += (p[i] + x) * (q[i] + y);
den1 += Math.abs(Math.pow(p[i] + x, 2));
den2 += Math.abs(Math.pow(q[i] + x, 2));
}
return 1 - (num / (Math.sqrt(den1) * Math.sqrt(den2)));
} | Correlation |
public static int Hamming(String first, String second) {
if (first.length() != second.length())
throw new IllegalArgumentException("The size of string must be the same.");
int diff = 0;
for (int i = 0; i < first.length(); i++)
if (first.charAt(i) != second.charAt(i))
diff++;
return diff;
} | Hamming |
public static double JaccardDistance(double[] p, double[] q) {
double distance = 0;
int intersection = 0, union = 0;
for (int x = 0; x < p.length; x++) {
if ((p[x] != 0) || (q[x] != 0)) {
if (p[x] == q[x]) {
intersection++;
}
union++;
}
}
if (union != 0)
distance = 1.0 - ((double) intersection / (double) union);
else
distance = 0;
return distance;
} | JaccardDistance |
public static double JensenShannonDivergence(double[] p, double[] q) {
double[] m = new double[p.length];
for (int i = 0; i < m.length; i++) {
m[i] = (p[i] + q[i]) / 2;
}
return (KullbackLeiblerDivergence(p, m) + KullbackLeiblerDivergence(q, m)) / 2;
} | JensenShannonDivergence |
public static double KumarJohnsonDivergence(double[] p, double[] q) {
double r = 0;
for (int i = 0; i < p.length; i++) {
if (p[i] != 0 && q[i] != 0) {
r += Math.pow(p[i] * p[i] - q[i] * q[i], 2) / 2 * Math.pow(p[i] * q[i], 1.5);
}
}
return r;
} | KumarJohnsonDivergence |
public static double KullbackLeiblerDivergence(double[] p, double[] q) {
boolean intersection = false;
double k = 0;
for (int i = 0; i < p.length; i++) {
if (p[i] != 0 && q[i] != 0) {
intersection = true;
k += p[i] * Math.log(p[i] / q[i]);
}
}
if (intersection)
return k;
else
return Double.POSITIVE_INFINITY;
} | KullbackLeiblerDivergence |
public static double SquaredEuclidean(double[] x, double[] y) {
double d = 0.0, u;
for (int i = 0; i < x.length; i++) {
u = x[i] - y[i];
d += u * u;
}
return d;
} | SquaredEuclidean |
public static double SymmetricChiSquareDivergence(double[] p, double[] q) {
double r = 0;
for (int i = 0; i < p.length; i++) {
double den = p[i] * q[i];
if (den != 0) {
double p1 = p[i] - q[i];
double p2 = p[i] + q[i];
r += (p1 * p1 * p2) / den;
}
}
return r;
} | SymmetricChiSquareDivergence |
public static double SymmetricKullbackLeibler(double[] p, double[] q) {
double dist = 0;
for (int i = 0; i < p.length; i++) {
dist += (p[i] - q[i]) * (Math.log(p[i]) - Math.log(q[i]));
}
return dist;
} | SymmetricKullbackLeibler |
public static double Taneja(double[] p, double[] q) {
double r = 0;
for (int i = 0; i < p.length; i++) {
if (p[i] != 0 && q[i] != 0) {
double pq = p[i] + q[i];
r += (pq / 2) * Math.log(pq / (2 * Math.sqrt(p[i] * q[i])));
}
}
return r;
} | Taneja |
public static double TopsoeDivergence(double[] p, double[] q) {
double r = 0;
for (int i = 0; i < p.length; i++) {
if (p[i] != 0 && q[i] != 0) {
double den = p[i] + q[i];
r += p[i] * Math.log(2 * p[i] / den) + q[i] * Math.log(2 * q[i] / den);
}
}
return r;
} | TopsoeDivergence |
public boolean contains(Vector3 p) {
boolean ans = false;
if(this.halfplane || p== null) return false;
if (isCorner(p)) {
return true;
}
PointLinePosition a12 = PointLineTest.pointLineTest(a,b,p);
PointLinePosition a23 = PointLineTest.pointLineTest(b,c,p);
PointLinePosition a31 = PointLineTest.pointLineTest(c,a,p);
if ((a12 == PointLinePosition.LEFT && a23 == PointLinePosition.LEFT && a31 == PointLinePosition.LEFT ) ||
(a12 == PointLinePosition.RIGHT && a23 == PointLinePosition.RIGHT && a31 == PointLinePosition.RIGHT ) ||
(a12 == PointLinePosition.ON_SEGMENT ||a23 == PointLinePosition.ON_SEGMENT || a31 == PointLinePosition.ON_SEGMENT)) {
ans = true;
}
return ans;
} | contains |
public static float calcDet(Vector3 a ,Vector3 b, Vector3 c) {
return (a.x*(b.y-c.y)) - (a.y*(b.x-c.x)) + (b.x*c.y-b.y*c.x);
} | calcDet |
public int sharedSegments(Triangle t2) {
int counter = 0;
if(a.equals(t2.a)) {
counter++;
}
if(a.equals(t2.b)) {
counter++;
}
if(a.equals(t2.c)) {
counter++;
}
if(b.equals(t2.a)) {
counter++;
}
if(b.equals(t2.b)) {
counter++;
}
if(b.equals(t2.c)) {
counter++;
}
if(c.equals(t2.a)) {
counter++;
}
if(c.equals(t2.b)) {
counter++;
}
if(c.equals(t2.c)) {
counter++;
}
return counter;
} | sharedSegments |
@Override
public ImageSource apply(ImageSource source) {
if (radius != 0) {
if (source.isGrayscale()) {
return applyGrayscale(source, radius);
} else {
return applyRGB(source, radius);
}
} else {
if (source.isGrayscale()) {
return applyGrayscale(source, kernel);
} else {
return applyRGB(source, kernel);
}
}
} | apply |
public <T> T handleResponse(Response response, Type returnType) throws ApiException {
if (response.isSuccessful()) {
if (returnType == null || response.code() == 204) {
// returning null if the returnType is not defined,
// or the status code is 204 (No Content)
return null;
} else {
return deserialize(response, returnType);
}
} else {
String respBody = null;
if (response.body() != null) {
try {
respBody = response.body().string();
} catch (IOException e) {
throw new ApiException(response.message(), e, response.code(), response.headers().toMultimap());
}
}
throw new ApiException(response.message(), response.code(), response.headers().toMultimap(), respBody);
}
} | handleResponse |
public void add(int ds, Object value) throws SerializationException, InvalidDataSetException {
if (value == null) {
return;
}
DataSetInfo dsi = dsiFactory.create(ds);
byte[] data = dsi.getSerializer().serialize(value, activeSerializationContext);
DataSet dataSet = new DefaultDataSet(dsi, data);
dataSets.add(dataSet);
} | add |
public void addDateTimeHelper(int ds, Date date) throws SerializationException, InvalidDataSetException {
if (date == null) {
return;
}
DataSetInfo dsi = dsiFactory.create(ds);
SimpleDateFormat df = new SimpleDateFormat(dsi.getSerializer().toString());
String value = df.format(date);
byte[] data = dsi.getSerializer().serialize(value, activeSerializationContext);
DataSet dataSet = new DefaultDataSet(dsi, data);
add(dataSet);
} | addDateTimeHelper |
public Object get(int dataSet) throws SerializationException {
Object result = null;
for (Iterator<DataSet> i = dataSets.iterator(); i.hasNext();) {
DataSet ds = i.next();
DataSetInfo info = ds.getInfo();
if (info.getDataSetNumber() == dataSet) {
result = getData(ds);
break;
}
}
return result;
} | get |
public List<Object> getAll(int dataSet) throws SerializationException {
List<Object> result = new ArrayList<Object>();
for (Iterator<DataSet> i = dataSets.iterator(); i.hasNext();) {
DataSet ds = i.next();
DataSetInfo info = ds.getInfo();
if (info.getDataSetNumber() == dataSet) {
result.add(getData(ds));
}
}
return result;
} | getAll |
public void readFrom(IIMReader reader, int recover) throws IOException, InvalidDataSetException {
final boolean doLog = log != null;
for (;;) {
try {
DataSet ds = reader.read();
if (ds == null) {
break;
}
if (doLog) {
log.debug("Read data set " + ds);
}
DataSetInfo info = ds.getInfo();
Serializer s = info.getSerializer();
if (s != null) {
if (info.getDataSetNumber() == IIM.DS(1, 90)) {
setCharacterSet((String) s.deserialize(ds.getData(), activeSerializationContext));
}
}
dataSets.add(ds);
if (stopAfter9_10 && info.getDataSetNumber() == IIM.DS(9, 10))
break;
} catch (IIMFormatException e) {
if (recoverFromIIMFormat && recover-- > 0) {
boolean r = reader.recover();
if (doLog) {
log.debug(r ? "Recoved from " + e : "Failed to recover from " + e);
}
if (!r)
break;
} else {
throw e;
}
} catch (UnsupportedDataSetException e) {
if (recoverFromUnsupportedDataSet && recover-- > 0) {
boolean r = reader.recover();
if (doLog) {
log.debug(r ? "Recoved from " + e : "Failed to recover from " + e);
}
if (!r)
break;
} else {
throw e;
}
} catch (InvalidDataSetException e) {
if (recoverFromInvalidDataSet && recover-- > 0) {
boolean r = reader.recover();
if (doLog) {
log.debug(r ? "Recoved from " + e : "Failed to recover from " + e);
}
if (!r)
break;
} else {
throw e;
}
} catch (IOException e) {
if (recover-- > 0 && !dataSets.isEmpty()) {
if (doLog) {
log.error("IOException while reading, however some data sets where recovered, " + e);
}
return;
} else {
throw e;
}
}
}
} | readFrom |
public void writeTo(IIMWriter writer) throws IOException {
final boolean doLog = log != null;
for (Iterator<DataSet> i = dataSets.iterator(); i.hasNext();) {
DataSet ds = i.next();
writer.write(ds);
if (doLog) {
log.debug("Wrote data set " + ds);
}
}
} | writeTo |
public Set<ConstraintViolation> validate(DataSetInfo info) {
Set<ConstraintViolation> errors = new LinkedHashSet<ConstraintViolation>();
try {
if (info.isMandatory() && get(info.getDataSetNumber()) == null) {
errors.add(new ConstraintViolation(info, ConstraintViolation.MANDATORY_MISSING));
}
if (!info.isRepeatable() && getAll(info.getDataSetNumber()).size() > 1) {
errors.add(new ConstraintViolation(info, ConstraintViolation.REPEATABLE_REPEATED));
}
} catch (SerializationException e) {
errors.add(new ConstraintViolation(info, ConstraintViolation.INVALID_VALUE));
}
return errors;
} | validate |
public Set<ConstraintViolation> validate(int record) {
Set<ConstraintViolation> errors = new LinkedHashSet<ConstraintViolation>();
for (int ds = 0; ds < 250; ++ds) {
try {
DataSetInfo dataSetInfo = dsiFactory.create(IIM.DS(record, ds));
errors.addAll(validate(dataSetInfo));
} catch (InvalidDataSetException ignored) {
// DataSetFactory doesn't know about this ds, so will skip it
}
}
return errors;
} | validate |
public Set<ConstraintViolation> validate() {
Set<ConstraintViolation> errors = new LinkedHashSet<ConstraintViolation>();
for (int record = 1; record <= 3; ++record) {
errors.addAll(validate(record));
}
return errors;
} | validate |
public int compare(Vector3 o1, Vector3 o2) {
int ans = 0;
if (o1 != null && o2 != null) {
Vector3 d1 = o1;
Vector3 d2 = o2;
if (d1.x > d2.x)
return 1;
if (d1.x < d2.x)
return -1;
// x1 == x2
if (d1.y > d2.y)
return 1;
if (d1.y < d2.y)
return -1;
} else {
if (o1 == null && o2 == null)
return 0;
if (o1 == null && o2 != null)
return 1;
if (o1 != null && o2 == null)
return -1;
}
return ans;
} | compare |
public double nextDouble(double lo, double hi) {
if (lo < 0) {
if (nextInt(2) == 0)
return -nextDouble(0, -lo);
else
return nextDouble(0, hi);
} else {
return (lo + (hi - lo) * nextDouble());
}
} | nextDouble |
public ApiResponse<TagsEnvelope> getTagCategoriesWithHttpInfo() throws ApiException {
com.squareup.okhttp.Call call = getTagCategoriesValidateBeforeCall(null, null);
Type localVarReturnType = new TypeToken<TagsEnvelope>(){}.getType();
return apiClient.execute(call, localVarReturnType);
} | getTagCategoriesWithHttpInfo |
public RuleEnvelope getRule(String ruleId) throws ApiException {
ApiResponse<RuleEnvelope> resp = getRuleWithHttpInfo(ruleId);
return resp.getData();
} | getRule |
protected void addNeighbor(Queue<ColorPoint> queue, int px, int py, int color, Feature component) {
if (!inBoundary(px, py, component)) {
return;
}
if (!mask.isTouched(px, py)) {
queue.add(new ColorPoint(px, py, color));
}
} | addNeighbor |
public double Function1D(double x) {
return Math.exp(x * x / (-2 * sqrSigma)) / (Math.sqrt(2 * Math.PI) * sigma);
} | Function1D |
public double Function2D(double x, double y) {
return Math.exp(-(x * x + y * y) / (2 * sqrSigma)) / (2 * Math.PI * sqrSigma);
} | Function2D |
public double[] Kernel1D(int size) {
if (((size % 2) == 0) || (size < 3) || (size > 101)) {
try {
throw new Exception("Wrong size");
} catch (Exception e) {
e.printStackTrace();
}
}
int r = size / 2;
// kernel
double[] kernel = new double[size];
// compute kernel
for (int x = -r, i = 0; i < size; x++, i++) {
kernel[i] = Function1D(x);
}
return kernel;
} | Kernel1D |
public double[][] Kernel2D(int size) {
if (((size % 2) == 0) || (size < 3) || (size > 101)) {
try {
throw new Exception("Wrong size");
} catch (Exception e) {
e.printStackTrace();
}
}
int r = size / 2;
double[][] kernel = new double[size][size];
// compute kernel
double sum = 0;
for (int y = -r, i = 0; i < size; y++, i++) {
for (int x = -r, j = 0; j < size; x++, j++) {
kernel[i][j] = Function2D(x, y);
sum += kernel[i][j];
}
}
for (int i = 0; i < kernel.length; i++) {
for (int j = 0; j < kernel[0].length; j++) {
kernel[i][j] /= sum;
}
}
return kernel;
} | Kernel2D |
public ArrayList<IntPoint> process(ImageSource fastBitmap) {
//FastBitmap l = new FastBitmap(fastBitmap);
if (points == null) {
apply(fastBitmap);
}
int width = fastBitmap.getWidth();
int height = fastBitmap.getHeight();
points = new ArrayList<IntPoint>();
if (fastBitmap.isGrayscale()) {
for (int x = 0; x < height; x++) {
for (int y = 0; y < width; y++) {
if (fastBitmap.getRGB(y, x) == 255) points.add(new IntPoint(y, x));
}
}
} else {
for (int x = 0; x < height; x++) {
for (int y = 0; y < width; y++) {
// TODO Check for green and blue?
if (fastBitmap.getR(y, x) == 255) points.add(new IntPoint(y, x));
}
}
}
return points;
} | process |
public static void Forward(double[] data) {
double[] result = new double[data.length];
for (int k = 0; k < result.length; k++) {
double sum = 0;
for (int n = 0; n < data.length; n++) {
double theta = ((2.0 * Math.PI) / data.length) * k * n;
sum += data[n] * cas(theta);
}
result[k] = (1.0 / Math.sqrt(data.length)) * sum;
}
for (int i = 0; i < result.length; i++) {
data[i] = result[i];
}
} | Forward |
public static void Forward(double[][] data) {
double[][] result = new double[data.length][data[0].length];
for (int m = 0; m < data.length; m++) {
for (int n = 0; n < data[0].length; n++) {
double sum = 0;
for (int i = 0; i < result.length; i++) {
for (int k = 0; k < data.length; k++) {
sum += data[i][k] * cas(((2.0 * Math.PI) / data.length) * (i * m + k * n));
}
result[m][n] = (1.0 / data.length) * sum;
}
}
}
for (int i = 0; i < data.length; i++) {
for (int j = 0; j < data[0].length; j++) {
data[i][j] = result[i][j];
}
}
} | Forward |
public PropertiesEnvelope createUserProperties(String userId, AppProperties properties, String aid) throws ApiException {
ApiResponse<PropertiesEnvelope> resp = createUserPropertiesWithHttpInfo(userId, properties, aid);
return resp.getData();
} | createUserProperties |
public PropertiesEnvelope getUserProperties(String userId, String aid) throws ApiException {
ApiResponse<PropertiesEnvelope> resp = getUserPropertiesWithHttpInfo(userId, aid);
return resp.getData();
} | getUserProperties |
protected <T extends Listener> Collection<T> copyList(Class<T> listenerClass,
Stream<Object> listeners, int sizeHint) {
if (sizeHint == 0) {
return Collections.emptyList();
}
return listeners
.map(listenerClass::cast)
.collect(Collectors.toCollection(() -> new ArrayList<>(sizeHint)));
} | copyList |
public List<Cluster> cluster(final Collection<Point2D> points) {
final List<Cluster> clusters = new ArrayList<Cluster>();
final Map<Point2D, PointStatus> visited = new HashMap<Point2D, DBScan.PointStatus>();
KDTree<Point2D> tree = new KDTree<Point2D>(2);
// Populate the kdTree
for (final Point2D point : points) {
double[] key = {point.x, point.y};
tree.insert(key, point);
}
for (final Point2D point : points) {
if (visited.get(point) != null) {
continue;
}
final List<Point2D> neighbors = getNeighbors(point, tree);
if (neighbors.size() >= minPoints) {
// DBSCAN does not care about center points
final Cluster cluster = new Cluster(clusters.size());
clusters.add(expandCluster(cluster, point, neighbors, tree, visited));
} else {
visited.put(point, PointStatus.NOISE);
}
}
for (Cluster cluster : clusters) {
cluster.calculateCentroid();
}
return clusters;
} | cluster |
private Cluster expandCluster(final Cluster cluster,
final Point2D point,
final List<Point2D> neighbors,
final KDTree<Point2D> points,
final Map<Point2D, PointStatus> visited) {
cluster.addPoint(point);
visited.put(point, PointStatus.PART_OF_CLUSTER);
List<Point2D> seeds = new ArrayList<Point2D>(neighbors);
int index = 0;
while (index < seeds.size()) {
Point2D current = seeds.get(index);
PointStatus pStatus = visited.get(current);
// only check non-visited points
if (pStatus == null) {
final List<Point2D> currentNeighbors = getNeighbors(current, points);
if (currentNeighbors.size() >= minPoints) {
seeds = merge(seeds, currentNeighbors);
}
}
if (pStatus != PointStatus.PART_OF_CLUSTER) {
visited.put(current, PointStatus.PART_OF_CLUSTER);
cluster.addPoint(current);
}
index++;
}
return cluster;
} | expandCluster |
private List<Point2D> merge(final List<Point2D> one, final List<Point2D> two) {
final Set<Point2D> oneSet = new HashSet<Point2D>(one);
for (Point2D item : two) {
if (!oneSet.contains(item)) {
one.add(item);
}
}
return one;
} | merge |
public ImageSource apply(ImageSource input) {
ImageSource originalImage = input;
int width = originalImage.getWidth();
int height = originalImage.getHeight();
boolean[][] matrix = new boolean[width][height]; // black n white boolean matrix; true = blck, false = white
// Copy
ImageSource filteredImage = new MatrixSource(input);
int[] histogram = OtsuBinarize.imageHistogram(originalImage);
int totalNumberOfpixels = height * width;
int threshold = OtsuBinarize.threshold(histogram, totalNumberOfpixels);
int black = 0;
int white = 255;
int gray;
int alpha;
int newColor;
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
gray = originalImage.getGray(i, j);
if (gray > threshold) {
matrix[i][j] = false;
} else {
matrix[i][j] = true;
}
}
}
int blackTreshold = letterThreshold(originalImage, matrix);
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
gray = originalImage.getGray(i, j);
alpha = originalImage.getA(i, j);
if (gray > blackTreshold) {
newColor = white;
} else {
newColor = black;
}
newColor = ColorHelper.getARGB(newColor, newColor, newColor, alpha);
filteredImage.setRGB(i, j, newColor);
}
}
return filteredImage;
} | apply |
public static int[] Argsort(final float[] array, final boolean ascending) {
Integer[] indexes = new Integer[array.length];
for (int i = 0; i < indexes.length; i++) {
indexes[i] = i;
}
Arrays.sort(indexes, new Comparator<Integer>() {
@Override
public int compare(final Integer i1, final Integer i2) {
return (ascending ? 1 : -1) * Float.compare(array[i1], array[i2]);
}
});
return asArray(indexes);
} | Argsort |