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04 Cleaning and Filtering

Exercise: Document Cleaning and FilteringIn this exercise you'll reduce and clean the agenda text of the L4-TP instructor-led course.1) Execute the Tagged document metanode. It applies POS and NE tagging to the agenda text.2) Remove punctuation from the text3) Convert all tokens to lower case4) Filter out stop words using the built-in list and a custom list with the following words: "session", "word","agenda". Check the Ignore unmodifiable flag option.5) Filter the document to proper nouns (POS tags NNP and NNPS). Check the Ignore unmodifiable flag option.6) Exclude locations, organizations and "unknown" NE tags. Check the Ignore unmodifiable flag option.7) Inspect the result with the Tagged Document Viewer node. What are the first three tokens in the document? Node 23Node 24Node 25Node 26Node 27Node 28Node 29 Tagged document Punctuation Erasure Case Converter Stop Word Filter Table Creator Tag Filter Tag Filter Tagged DocumentViewer Exercise: Document Cleaning and FilteringIn this exercise you'll reduce and clean the agenda text of the L4-TP instructor-led course.1) Execute the Tagged document metanode. It applies POS and NE tagging to the agenda text.2) Remove punctuation from the text3) Convert all tokens to lower case4) Filter out stop words using the built-in list and a custom list with the following words: "session", "word","agenda". Check the Ignore unmodifiable flag option.5) Filter the document to proper nouns (POS tags NNP and NNPS). Check the Ignore unmodifiable flag option.6) Exclude locations, organizations and "unknown" NE tags. Check the Ignore unmodifiable flag option.7) Inspect the result with the Tagged Document Viewer node. What are the first three tokens in the document? Node 23Node 24Node 25Node 26Node 27Node 28Node 29 Tagged document Punctuation Erasure Case Converter Stop Word Filter Table Creator Tag Filter Tag Filter Tagged DocumentViewer

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Created by: Lada.Rudnitckaia
Created at: 2020-07-31
On NodePit since: 2023-07-17
Last update: 2024-11-17
Created with KNIME version: v4.7.4

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