Identify newly encountered words. Many 'new' words are coined by combining productive morphemes.
Extract roots for comparison of content. If you're doing a search for web pages, and your query includes the word 'idea', you probably also want to include pages with the word 'ideas' as well.
Determine parts of speech.
Save (memory) space. You can use morphological rules to generate the various forms of, say, regular verbs, which saves you the space taken by duplicating each form seperately. In cases where substantial semantic knowledge is being encoded, it would be silly to have two completely separate entries for 'idea' and 'ideas'. What you need instead is a representation that allows you to express singular vs. plural.
Identify newly encountered words. Many 'new' words are coined by combining productive morphemes.Extract roots for comparison of content. If you're doing a search for web pages, and your query includes the word 'idea', you probably also want to include pages with the word 'ideas' as well.Determine parts of speech.Save (memory) space. You can use morphological rules to generate the various forms of, say, regular verbs, which saves you the space taken by duplicating each form seperately. In cases where substantial semantic knowledge is being encoded, it would be silly to have two completely separate entries for 'idea' and 'ideas'. What you need instead is a representation that allows you to express singular vs. plural.
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