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Statistics and linguistic rules in multiword extraction: a comparative analysis
by Shaishav Agrawal; Ratna Sanyal; Sudip Sanyal
International Journal of Reasoning-based Intelligent Systems (IJRIS), Vol. 6, No. 1/2, 2014

 

Abstract: A hybrid methodology is proposed for extracting multiword expressions based on linguistic and statistical information. In the proposed methodology, N-grams are extracted by linguistic patterns and then various statistical measures are applied for classifying these N-grams as multiword expressions. To solve the problem of deciding cut-off boundary threshold in statistical filtering phase, a novel method for calculating boundary threshold is designed. Comparative analysis between the baseline method and the proposed methodology is presented. In the baseline method, firstly, N-grams are filtered by statistical measures and then linguistic filtering is applied. Precision, recall and f-Score are calculated on manually annotated corpus. Observed results show that the proposed methodology provides good results for certain types of multiword expressions like compound nouns, verb-particles and verb-verb.

Online publication date: Sun, 27-Jul-2014

 

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