Text Mining - Text Analysis Processes

Text Analysis Processes

Subtasks — components of a larger text-analytics effort — typically include:

  • Information retrieval or identification of a corpus is a preparatory step: collecting or identifying a set textual materials, on the Web or held in a file system, database, or content management system, for analysis.
  • Although some text analytics systems limit themselves to purely statistical methods, many others apply more extensive natural language processing, such as part of speech tagging, syntactic parsing, and other types of linguistic analysis.
  • Named entity recognition is the use of gazetteers or statistical techniques to identify named text features: people, organizations, place names, stock ticker symbols, certain abbreviations, and so on. Disambiguation — the use of contextual clues — may be required to decide where, for instance, "Ford" refers to a former U.S. president, a vehicle manufacturer, a movie star (Glenn or Harrison?), a river crossing, or some other entity.
  • Recognition of Pattern Identified Entities: Features such as telephone numbers, e-mail addresses, quantities (with units) can be discerned via regular expression or other pattern matches.
  • Coreference: identification of noun phrases and other terms that refer to the same object.
  • Relationship, fact, and event Extraction: identification of associations among entities and other information in text
  • Sentiment analysis involves discerning subjective (as opposed to factual) material and extracting various forms of attitudinal information: sentiment, opinion, mood, and emotion. Text analytics techniques are helpful in analyzing sentiment at the entity, concept, or topic level and in distinguishing opinion holder and opinion object.
  • Quantitative text analysis is a set of techniques stemming from the social sciences where either a human judge or a computer extracts semantic or grammatical relationships between words in order to find out the meaning or stylistic patterns of, usually, a casual personal text for the purpose of psychological profiling etc.

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Famous quotes containing the words text, analysis and/or processes:

    Don Pedro. But when shall we set the savage bull’s horns on the sensible Benedick’s head?
    Claudio. Yes, and text underneath, “Here dwells Benedick, the married man?”
    William Shakespeare (1564–1616)

    Analysis as an instrument of enlightenment and civilization is good, in so far as it shatters absurd convictions, acts as a solvent upon natural prejudices, and undermines authority; good, in other words, in that it sets free, refines, humanizes, makes slaves ripe for freedom. But it is bad, very bad, in so far as it stands in the way of action, cannot shape the vital forces, maims life at its roots. Analysis can be a very unappetizing affair, as much so as death.
    Thomas Mann (1875–1955)

    The higher processes are all processes of simplification. The novelist must learn to write, and then he must unlearn it; just as the modern painter learns to draw, and then learns when utterly to disregard his accomplishment, when to subordinate it to a higher and truer effect.
    Willa Cather (1873–1947)