Key Phrase Extraction Papers

http://citeseerx.ist.psu.edu/search?q=keyphrase+extraction&submit=Search&sort=re

Papers on Opinion Mining

http://citeseerx.ist.psu.edu/search;jsessionid=26FE31AC22889F40F973743ACC7A10FB?q=opinion+mining&submit=Search&sort=rel

Part-Of-Speech Tagging

http://nlp.stanford.edu/software/tagger.shtml

Link on Opinion Mining-- Sentiment analysis and Subjectivity by Bing Liu

 OPINION MINING & SUBJECTIVITY


http://www.cs.uic.edu/~liub/FBS/sentiment-analysis.html

EXTREMELY USEFUL VIDEO TUTORIALS BY BING LIU ON OPINION MINING :

http://videolectures.net/bing_liu/

ARTIFICIAL INTELLIGENCE VIDEO TUTORIALS

http://nptel.iitm.ac.in/video.php?subjectId=106105079


Note: you can Download these tutorials or view through youtube