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| [Introduction] |
[Description] |
[System] |
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[Videos] |
[References] |
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Opinion Analysis System
What does OASYS do?
The Internet has become not only a way to access information, but a place for people to
present their opinions to the public. From reputable news sites to casual forums and blogs,
environments exist for anyone to express their opinion. A reader could find current opinion
on nearly any topic of interest by combing through all of these sites for relevant documents.
This process, however, would be extremely time-consuming, and in the end the reader would probably
be so overwhelmed with information he or she would not be able to accurately distill a final rating.
OASYS provides a tool to accurately and quickly analyze opinion intensity on a particular topic.
In addition to finding a quantitative and qualitative rating, it shows how the level of opinion
intensity changes over time and geographic location.
Why is OASYS useful?
The need for an accurate opinion analysis tool is not limited to a particular purpose or even a
specific field. While politicians may find it useful to analyze the popularity of new proposals
or the overall public reaction to certain events, companies could be interested in consumer attitudes
towards a product. Military or foreign policy experts might want to gauge opinions on a given topic
in order to assess what their next steps should be. Historians and social anthropologists may want
to track how views of an issue have changed over time or have varied from region to region.
How does OASYS work?
OASYS draws from fields nearly as varied as its applications. When humans read a document, they consider
not only its opinionated statements but also its overall tone. OASYS reflects the impression writing
leaves on the reader rather than just the relevant written words - a tricky task, since any two readers
can have different perceptions of the author's intent. Therefore, OASYS takes a linguistic, statistical,
database, cognitive, and engineering approach to automatically generating the average human evaluation of opinion intensity.
A sample group of human-evaluated documents trains the system to associate certain quantitative automatic
analyses of opinion intensity with a set of human descriptions. From this set of descriptions, a final
average human rating is generated.
Languages and web page visited
OASYS retrieves documents in English, Spanish and Italian from american, spanish, italian and pakistani news
sources (total of 38 news sources) . It has retrieved so far about 3.000.000 documents and each day visites about 10.000 documents.
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| Developed at UMIACS (University of Maryland) - Webmaster: Diego Reforgiato Recupero |
