7. A system for mitigating sentiment model overfitting, the system comprising: a processor; and a memory communicably coupled to the processor, wherein the memory includes computer instructions configured to cause the processor to: determine, using a first sentiment model having a current list of keywords and respective weights, respective sentiment results for a plurality of posts; receive sentiment feedback for the respective sentiment results; display a first set of posts which are in the plurality of posts and have a sentiment feedback not matching the respective sentiment results; display: keywords which appear in the first set of posts; and the keywords' respective weights; receive a first change including at least one of: a first proposed change to a respective weight of one or more of the keywords; a first proposed deletion of one or more of the keywords; or a first proposed new keyword and a respective weight of the first proposed new keyword; maintain unchanged the current list of keywords and respective weights while creating a proposed list of keywords and respective weights by applying the first change to the current list of keywords and respective weights; analyze, using the proposed list of keywords and respective weights, the first set of posts; enable identifying overfitting by displaying sentiment results for the first set of posts produced using the proposed list of keywords and respective weights; receive a second change including at least one of: a second proposed change to a respective weight of one or more of the keywords; a second proposed deletion of one or more of the keywords; or a second proposed new keyword and a respective weight of the second proposed new keyword; update the proposed list of keywords and respective weights by applying the second change to the proposed list of keywords and respective weights; after applying the second change to the proposed list of keywords and respective weights, re-analyze the first set of posts using the proposed list of keywords and respective weights; enable the identification of overfitting by the display of sentiment results for the first set of posts produced using the proposed list of keywords and respective weights; and create a second sentiment model by replacing the current list of keywords and respective weights with the proposed list of keywords and respective weights.
7. A system for mitigating sentiment model overfitting, the system comprising: a processor; and a memory communicably coupled to the processor, wherein the memory includes computer instructions configured to cause the processor to: determine, using a first sentiment model having a current list of keywords and respective weights, respective sentiment results for a plurality of posts; receive sentiment feedback for the respective sentiment results; display a first set of posts which are in the plurality of posts and have a sentiment feedback not matching the respective sentiment results; display: keywords which appear in the first set of posts; and the keywords' respective weights; receive a first change including at least one of: a first proposed change to a respective weight of one or more of the keywords; a first proposed deletion of one or more of the keywords; or a first proposed new keyword and a respective weight of the first proposed new keyword; maintain unchanged the current list of keywords and respective weights while creating a proposed list of keywords and respective weights by applying the first change to the current list of keywords and respective weights; analyze, using the proposed list of keywords and respective weights, the first set of posts; enable identifying overfitting by displaying sentiment results for the first set of posts produced using the proposed list of keywords and respective weights; receive a second change including at least one of: a second proposed change to a respective weight of one or more of the keywords; a second proposed deletion of one or more of the keywords; or a second proposed new keyword and a respective weight of the second proposed new keyword; update the proposed list of keywords and respective weights by applying the second change to the proposed list of keywords and respective weights; after applying the second change to the proposed list of keywords and respective weights, re-analyze the first set of posts using the proposed list of keywords and respective weights; enable the identification of overfitting by the display of sentiment results for the first set of posts produced using the proposed list of keywords and respective weights; and create a second sentiment model by replacing the current list of keywords and respective weights with the proposed list of keywords and respective weights. 12. The system of claim 7 , wherein the computer instructions further comprise computer instructions to cause the processor to: calculate, for the sentiment results produced using the proposed list of keywords and respective weights, precision for at least one of negative sentiment, neutral sentiment, and positive sentiment; and display the results of the calculating.