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Hypervideo information retrieval usingmultimedia

  • US 6,490,580 B1
  • Filed: 10/29/1999
  • Issued: 12/03/2002
  • Est. Priority Date: 10/29/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for finding documents which relate to a portion of a temporal document, comprising:

  • (a) in response to a signal of interest at a particular time during the temporal document, identifying a portion of the temporal document for which related documents are to be found;

    (b) selecting text associated with the portion of the temporal document identified, by reference to a database wherein is stored each term in text associated with the temporal document, together with a time in the temporal document at which the term occurs;

    (c) weighting each term in the text selected by a function W(t) according to the time t at which the text occurs relative to the time at which the signal of interest occurs;

    (d) finding the related documents by use of information retrieval techniques as applied to the text selected;

    wherein W

    (t)
    =Wt1
    ,

    t2

    (t)
    =





    k=0t


    (1-exp





    (-t1)
    )
    *exp





    (-t1

    k
    )
    *




    (1-exp





    (-t2)
    )
    *exp





    (-t2

    (t-k)
    )
    ,
    embedded imagewhere t1 and t2 are constants.

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