CLaC Laboratory

NLP experiments

The following experiments shows online natural language processing experiments and applications, specifically related to semantic analysis.
The main experiments take advantage of a semantic network, examples of the semantic network and the path between two words in that network is shown in the figures to the right.

Experiments include: Words Semantic Relatedness and Similarity, Word-Phrase Semantic Similarity, and Semantic Compositionality in Context.
Applications include: Twitter advanced search application and Facebook advanced search application.


Experiments

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Words Semantic Relatedness

Words semantic relatedness is a measurement of the degree to which two words are related.

The following online demo calculates two words semantic relatedness using the shorted path in a weighted semantic network. The weights are based on human annotators ratings of the relatedness of a specfic path type.

For example, if you compute the semantic relatedness of: "Car" and "Vehicle" based on this demo, the result is that they are 91.5% semantically related.

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  • 0%

Reference:
PDF   Reda Siblini and Leila Kosseim (2013). Using a Weighted Semantic Network for Lexical Semantic Relatedness. In Proceedings of Recent Advances in Natural Language Processing (RANLP 2013), September, Hissar, Bulgaria.

Word-Phrase Semantic Similarity

This online demo evaluate semantic similarity of words and compositional phrases. The demo evaluates the semantic similarity of a word and a short sequence of two words. For example, in the word "contact" and the phrase "close interaction" are semantically similar.


  • Negative

Reference:
PDFBib Reda Siblini and Leila Kosseim. ClaC: Semantic Relatedness of Words and Phrases. In Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013), June, Atlanta, Georgia, USA, pp. 108--113,http://www.aclweb.org/anthology/S13-2019

Semantic Compositionality in Context

This online demo evaluate the compositionality of phrases in context. the demo decides whether a phrase is used in its literal or figurative meaning in a given context. For example, the phrase "big picture" as in the context "Click here for a bigger picture" is used literally, whereas in the context "To solve this problem, you have to look at the big picture." it is used figuratively.


  • Literally

Reference: PDFBib Reda Siblini and Leila Kosseim. ClaC: Semantic Relatedness of Words and Phrases. In Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013), June, Atlanta, Georgia, USA, pp. 108--113,http://www.aclweb.org/anthology/S13-2019

Applications

Twitter Advanced Search

This tool uses semantic relatedness to search tweets by a certain topic in real time. The tweets that have the highest semantic relatedness to the topic searched for are displayed.


Facebook Advanced Posts Search

This application uses semantic relatedness to search Facebook posts by a certain topic. The posts that have the highest semantic relatedness to the topic searched for are displayed.


Facebook search results