sentiment analysis
DESCRIPTION
Short lecture on "Sentiment Analysis" at KSU, CCIS, Data mining course spring 14.TRANSCRIPT
A presentation by M. Almenea, M. Albidah
A presentation by M. Almenea, M. Albidah
A presentation by M. Almenea, M. Albidah
What’s the problem?
A presentation by M. Almenea, M. Albidah
What’s the problem?
Why sentiment analysis?
A presentation by M. Almenea, M. Albidah
What’s the problem?
Why sentiment analysis?
Roadmap
A presentation by M. Almenea, M. Albidah
What’s the problem?
Why sentiment analysis?
Roadmap
Challenges
A presentation by M. Almenea, M. Albidah
A presentation by M. Almenea, M. Albidah
We need to use NLP to study emotions, opinions that are
expressed in text.
A presentation by M. Almenea, M. Albidah
We need to use NLP to study emotions, opinions that are
expressed in text.
I have fallen in love with Python.
Example:
This camera takes great photo, I really like it.
A presentation by M. Almenea, M. Albidah
A presentation by M. Almenea, M. Albidah
Companies can use SA tojudge on customer opinions.
As a consequence, No surveys.
A presentation by M. Almenea, M. Albidah
Companies can use SA tojudge on customer opinions.
As a consequence, No surveys.
Opinion retrieval: search foropinions.
A presentation by M. Almenea, M. Albidah
System Design:1- Get training data {x1,x2,…xm}.2- String to vector.3- Stemming and stopWords removal.4- Attribute selection.5. Run the system.
A presentation by M. Almenea, M. Albidah
System Design:1- Get training data {x1,x2,…xm}.2- String to vector.3- Stemming and stopWords removal.4- Attribute selection.5. Run the system.
A presentation by M. Almenea, M. Albidah
A presentation by M. Almenea, M. Albidah
[1] Example from Prof. Ronen Feldman
Example[1]:- honda accord and toyota camry are nice sedans.- honda accord and toyota camry are nice sedans, but hardly the best car on the road.
A presentation by M. Almenea, M. Albidah
1- Named Entity Recognition.2- Poor spelling, poor punctuation, poor grammar.3- Language complexity.4- For ArabicNLP: Arabizi is another problem.5- Emotional Symbols - :D ;) etc.. .
A presentation by M. Almenea, M. Albidah
http://nlp.stanford.edu:8080/sentiment/rntnDemo.htmlhttp://www.csc.ncsu.edu/faculty/healey/tweet_viz/tweet_app/
A presentation by M. Almenea, M. Albidah
A presentation by M. Almenea, M. Albidah
• https://stackoverflow.com/questions/4806176/what-are-the-most-challenging-issues-in-sentiment-analysisopinion-mining
• http://www.lct-master.org/files/MullenSentimentCourseSlides.pdf• http://ijcai13.org/files/tutorial_slides/tf4.pdf