FAQ - Context Analytics

Was there a methodology change in 2016-2017?

In 2017, Context Analytics switched from scoring messages with cashtags only (ex. $AAPL) to a topic model based approach which allowed for additional terms (like company names and abbreviations) to be included in sentiment calculations. This also allowed for exclusionary terms on topics that have ticker conflicts with foreign equities or cryptocurrencies.

Did the sentiment scoring algorithm change?

Context Analytics’ NLP dictionary weights on words and phrases do change over time. This could be the inclusion of new terms or phrases or alterations in the magnitude of current weights. The dictionary is evaluated quarterly and small percentage of words/phrases in the dictionary are added/altered.

Have data sources (e.g. Twitter API access) change?

Twitter API access did not change.