Patent ID: 8396691

Claim:
A data determination apparatus, comprising: a judgment unit that judges whether or not an amplitude of fluctuation representing a direction of change between a shift from a first data among plural data representing sequential situations of an object to an interest data to be processed representing a situation sequentially later than a situation represented by the first data among the plural data and a shift from the interest data to a second data among the plural data representing a situation sequentially later than the situation represented by the interest data to be processed is larger than a predetermined value; a first vector calculation unit that calculates a first vector representing a shift from a variable shown by the first data to a variable shown by the interest data; a second vector calculation unit that calculates a second vector representing a shift from the variable shown by the interest data to a variable shown by the second data; a dot product calculation unit that calculates a dot product of the first vector calculated by the first vector calculation unit and the second vector calculated by the second vector calculation unit; and a determination unit that determines whether or not the interest data representing a situation of the object is unreliable; wherein the judgment unit judges that the amplitude of fluctuation is larger than the predetermined value, when the dot product calculated by the dot product calculation unit is smaller than a given value; and the determination unit determines that the interest data is unreliable, when the judgment unit judges that the amplitude of fluctuation is larger than the predetermined value.