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The Semantic Quilt

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University of Minnesota, Duluth
University of Minnesota, Duluth

A talk on the Semantic Quilt, which combines various methods of "doing semantics" into a more unified framework.

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The Semantic Quilt: Contexts, Co-occurrences, Kernels, and Ontologies Ted Pedersen University of Minnesota, Duluth http:// www.d.umn.edu/~tpederse
Create by stitching together
Sew together different materials
Ontologies Co-Occurrences Kernels Contexts
Semantics in NLP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What do we mean by semantics ? …it depends on our resources… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What level of granularity? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Terrible Tension : Ambiguity versus Granularity ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Current State of Affairs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Similarity as Organizing Principle ,[object Object],[object Object],[object Object],[object Object],[object Object]
Things we can do now… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Things we want to do… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Semantic Patches to Sew Together ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Ontologies Co-Occurrences Kernels Contexts
Ngram Statistics Package http:// ngram.sourceforge.net Co-Occurrences
Things we can do now… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Co-occurrences and semantics? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Why pairs of words? ,[object Object],[object Object],[object Object],[object Object],[object Object]
Bigrams ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
“ occur together more often than expected by chance…” ,[object Object],[object Object],[object Object],[object Object]
Measures and Tests of Association http:// ngram.sourceforge.net ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What do we get at the end? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Ontologies Co-Occurrences Kernels Contexts
SenseClusters http:// senseclusters.sourceforge.net Contexts
Things we can do now… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Identify Similar Contexts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SenseClusters Methodology ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Second Order Features ,[object Object],[object Object],[object Object]
Similar Contexts may have the same meaning… ,[object Object],[object Object],[object Object],[object Object],[object Object]
Second Order Context Representation ,[object Object],[object Object],[object Object],[object Object],[object Object]
2 nd Order Context Vectors ,[object Object],0 6272.85 2.9133 62.6084 20.032 1176.84 51.021 O2 context 0 18818.55 0 0 0 205.5469 134.5102 guy 0 0 0 136.0441 29.576 0 0 Oscar 0 0 8.7399 51.7812 30.520 3324.98 18.5533 won needle family war movie actor football baseball
After context representation… ,[object Object],[object Object],[object Object],[object Object],[object Object]
What do we get at the end? ,[object Object],[object Object],[object Object]
Ontologies WordNet-Similarity Co-Occurrences Ngram Statistics Package Kernels WSD-Shell Contexts SenseClusters
Oh…we also get plenty of these… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The WSD-Shell http:// www.d.umn.edu/~tpederse/supervised.html Kernels
Things we can do now… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Machine Learning Approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Kernel Methods ,[object Object],[object Object],[object Object]
Kernels are similarity matrices ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What do we get at the end? ,[object Object],[object Object]
Ontologies WordNet-Similarity Co-Occurrences Ngram Statistics Package Kernels WSD-Shell Contexts SenseClusters
WordNet-Similarity http://wn-similarity.sourceforge.net Ontologies
Things we can do now… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Similarity and Relatedness ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
WordNet-Similarity http://wn-similarity.sourceforge.net ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Path Finding ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
watercraft instrumentality object artifact conveyance vehicle motor-vehicle car boat ark article ware table-ware cutlery fork from Jiang and Conrath [1997]
Information Content ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Observed “car”... motor vehicle (327 +1) *root* (32783 + 1) minicab (6) cab (23) car (73 +1) bus (17) stock car (12)
Observed “stock car”... motor vehicle (328+1) *root* (32784+1) minicab (6) cab (23) car (74+1) bus (17) stock car (12+1)
After Counting Concepts... motor vehicle (329) IC = 1.9 *root* (32785) minicab (6) cab (23) car (75) bus (17) IC = 3.5 stock car (13) IC = 3.1
Similarity and Information Content ,[object Object],[object Object],[object Object]
What do we get at the end? ,[object Object],[object Object]
Ontologies WordNet-Similarity Co-Occurrences Ngram Statistics Package Kernels WSD-Shell Contexts SenseClusters
Wait a minute … ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Using Dictionary Glosses to Measure Relatedness ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Gloss Vectors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What do we get at the end? ,[object Object],[object Object]
Why measure conceptual similarity? ,[object Object],[object Object],[object Object],[object Object]
Word Sense Disambiguation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
WordNet-SenseRelate http:// senserelate.sourceforge.net SenseRelate
SenseRelate Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Coverage… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What do we get at the end? ,[object Object],[object Object],[object Object]
Ontologies WordNet-Similarity Co-Occurrences Ngram Statistics Package Kernels WSD-Shell Contexts SenseClusters SenseRelate
Kernels are similarity matrices ,[object Object],[object Object],[object Object],[object Object],[object Object]
Ontologies WordNet-Similarity Co-Occurrences Ngram Statistics Package Kernels WSD-Shell Contexts SenseClusters SenseRelate
SenseClusters Input … matrices ,[object Object],[object Object],[object Object],[object Object]
Ontologies WordNet-Similarity Co-Occurrences Ngram Statistics Package Kernels WSD-Shell Contexts SenseClusters SenseRelate
Identifying Collocations ,[object Object],[object Object]
Ontologies WordNet-Similarity Co-Occurrences Ngram Statistics Package Kernels WSD-Shell Contexts SenseClusters SenseRelate
 
Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Many Thanks… ,[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],[object Object],[object Object],[object Object],[object Object]
URLs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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