# Image of a City through Big Data Analytics: Colombo from the Lens of Geo-Coded Social Media Data
## 4 Results
### Sentiment Analysis  
To proceed with the sentiment analysis, a bag of 720 words (482 words that give a positive meaning, i.e., good, happy; 238 words that give a negative meaning, i.e., unpleasant, dirty, garbage) were identified from the tweets. Table 2 represents the 'Place Names', 'Lynchian Category' derived from the image processing exercise, temporal distribution of the derived 'Sentiment Category-Positive/Negative'- per each place name and the positive sentiment percentages, and 'Composite Percentage values of Positive Sentiments' per each place name. Figure 4: Distribution of place names according to the Lynchian category. \begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Place Name and Code**} & \multirow{2}{*}{**Lyonina**} & \multicolumn{3}{c}{**2015/16**} & \multicolumn{3}{c}{**2017/18**} & \multicolumn{3}{c}{**2019/20**} & \multicolumn{3}{c}{**C**\%P**} \\ \cline{2-13}  & **Category** & **P** & **N** & **T** & **\% P** & **P** & **N** & **T** & **\% P** & **P** & **N** & **T** & **\% P** & \\ \hline Al Alair Residential Condominium & Landmark & 2 & 1 & 3 & 66.67\% & 40 & 3 & 43 & 93.02\% & 7 & 0 & 7 & 100.00\% & 86.50\% \\ (ARC) & Landmark & 16 & 0 & 16 & 100.00\% & 20 & 4 & 24 & 83.33\% & 21 & 7 & 28 & 75.00\% & 86.11\% \\ Beddagana Weland Park (BWP) & District & 15 & 0 & 15 & 100.00\% & 22 & 0 & 22 & 100.00\% & 7 & 1 & 8 & 87.50\% & 95.83\% \\ Beiac Lake (RL) & Edge & 12 & 7 & 19 & 63.15\% & 13 & 7 & 20 & 65\% & 11 & 6 & 17 & 64.95\% & 64.30\% \\ Belanavia Park (BWP) & District & 122 & 1 & 123 & 99.19\% & 47 & 2 & 49 & 95.92\% & 20 & 8 & 28 & 71.43\% & 88.85\% \\ Bandaranise Memorial International & Landmark & 268 & 10 & 278 & 96.40\% & 80 & 7 & 87 & 91.95\% & 59 & 7 & 66 & 89.39\% & 92.58\% \\ Conference Hall (BMICH) & Landmark & 13 & 3 & 16 & 81.25\% & 2 & 1 & 3 & 66.67\% & 4 & 1 & 5 & 80.00\% & 75.97\% \\ Colombia City Center (CCC) & Landmark & 8 & 1 & 9 & 88.89\% & 13 & 1 & 14 & 92.86\% & 25 & 0 & 25 & 100.00\% & 93.92\% \\ Colombiero Fort (CP) & District & 202 & 31 & 233 & 86.70\% & 183 & 21 & 204 & 89.71\% & 101 & 12 & 113 & 89.38\% & 88.60\% \\ Dyspath Park (DP) & District & 5 & 0 & 5 & 100.00\% & 6 & 2 & 8 & 75.00\% & 4 & 2 & 6 & 66.67\% & 80.56\% \\ Galileo Zero (GP) & Edge & 106 & 37 & 143 & 74.13\% & 128 & 15 & 143 & 89.51\% & 256 & 13 & 269 & 95.17\% & 86.27\% \\ Galle Face Hotel (GFH) & Landmark & 169 & 4 & 173 & 97.69\% & 257 & 19 & 276 & 93.12\% & 153 & 11 & 164 & 93.94\% & 94.07\% \\ Ganganarus Temple (ET) & Landmark & 225 & 14 & 239 & 94.14\% & 168 & 11 & 179 & 93.85\% & 24 & 1 & 25 & 96.00\% & 94.66\% \\ Hilton Hotel (HP) & Landmark & 122 & 18 & 140 & 87.14\% & 164 & 180 & 91.11\% & 41 & 5 & 46 & 89.31\% & 89.13\% \\ Kelaniya Temple (KT) & Landmark & 34 & 7 & 41 & 82.93\% & 22 & 7 & 29 & 75.86\% & 39 & 8 & 47 & 82.98\% & 80.59\% \\ Kingsbury Hotel (SH) & Landmark & 322 & 19 & 341 & 94.43\% & 217 & 12 & 229 & 94.76\% & 314 & 11 & 325 & 96.62\% & 95.27\% \\ Liberty Plaza Italian (IPB) & Landmark & 118 & 12 & 120 & 83.32\% & 28 & 301 & 90.90\% & 41 & 41 & 55 & 74.59\% & 90.63\% \\ Lotus Tower (LT) & Landmark & 102 & 25 & 135 & 75.55\% & 135 & 17 & 152 & 88.81\% & 100 & 116 & 86.27\% & 83.52\% \\ Mount Lavina Isella ONL (RLB) & Edge & 78 & 5 & 83 & 93.98\% & 65 & 7 & 72 & 90.28\% & 36 & 2 & 38 & 94.94\% & 93.00\% \\ One Galle Face Building (OCFB) & Landmark & 0 & 0 & 0 & N/A & 0 & 0 & 0 & N/A & 77 & 6 & 83 & 92.77\% & 30.92\% \\ Parliament (P) & Landmark & 14 & 7 & 21 & 66.66\% & 6 & 3 & 9 & 66.7\% & 3 & 2 & 5 & 60.00\% & 64.45\% \\ Pettah Market (PM) & District & 218 & 80 & 298.73\% & 130 & 23 & 153 & 84.97\% & 28 & 35 & 71.74\% & 78.42\% \\ Fort City (PC) & District & 22 & 6 & 28 & 78.57\% & 47 & 12 &Using Table 2, Figure 5a-c was mapped based on the distribution of the percentages of positively classified tweets per place over the three-time lapse considered--2015/2016, 2017/2018/2019/2020.