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Accuracy of Maximum Entropy
Precision of Maximum Entropy
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Fig. 2.12 Accuracy and precision of Maximum Entropy
number levels 65 and 70, and then it follows an increasing trend. Considering this,
it can be concluded that an increase in the number of iteration affects the precision
value positively.
2.4.3 Sentiment Mining on Tracking Results
A database is produced and classified by our Twitter sentiment tracking system. It
has 362,529 automatically classified tweets collected by tracking in 9 days via the
Twitter API.
The tracking process that commenced on August 20 was finalized on August 28.
Throughout the 9 days period, recent news that might have an impact on the views of
Twitter users on the four tracked brands (Facebook, Twitter, Apple, and Microsoft)
are screened.
During this time frame, Microsoft announced on August 23, 2012 that it renewed
its 25-year-old logo. A lot of tweets with regard to the new logo were collected.
With the spread of the news, it was observed that in 11 cities among 17 cities, the
percentage of positive tweets of Microsoft increased on August 24.
Particularly, the increase in four cities was remarkable. The increase in one of the
cities, Miami, can be observed from Fig. 2.13 .
2.4.4 Constancy of Tracking Results
When the tracking result charts are monitored, it is seen that, in general, there are
no big jumps or declines in the percentage of positive tweets. This stability case
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