Machine Learning Applications in NLP.ppt

Machine Learning Real World Applications Rob Jasper Intelligent Results http://fac-staff.seattleu.edu/jasperr [email_address]

Goals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Machine Learning ,[object Object],[object Object]

Machine Learning Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Unsupervised versus Supervised Learning ,[object Object],[object Object],[object Object],[object Object],[object Object]

Problem Setting ,[object Object],[object Object],[object Object],[object Object],[object Object]

Concepts and training examples Instance Space X + + + + c - - - - Training examples

General Model of Learning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Error of hypothesis Instance Space X + + + + c - h - - - Where c and h disagree

An Operational Model of Machine Learning Learner Training Data Model Execution Engine Model Tagged Data Production Data

Machine Learning in Natural Language Processing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PoS Tagging ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Named Entity Extraction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Key Phrase Extraction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Spelling Correction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Text Categorization ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Document Representation ,[object Object],Phish Page Russell Trey Record CD begin short tour ... 14 3 2 6 2 3 1 1 3 ... ,[object Object],[object Object],[object Object]

Vector Example ,[object Object],Phish Trey 6 14 d1 d2

Vector Comparison Phish Trey 6 14 d1 d2

kNN classification ,[object Object],? M M M M M S S S S S B B B B B K=1 K=5 K=10 S Sports M Music B Business

Rocchio Classifier Music m m m m m m M Threshold Characteristic Vector Sports s s s s s s s S Business b b b b B b

Rocchio Example Phish Sales + + + + - - - - Centroid+ Centroid- Rocchio

Support Vector Machines + + + + + + + + - - - - - - - - - -

Issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Bagging ,[object Object],[object Object],[object Object],Music Training Data T2 T1 T3 T4 T5 Tn

Boosting ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object],[object Object],[object Object]

Resources ,[object Object],[object Object],[object Object]

Machine Learning Applications in NLP.ppt

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