Patent ID: 6965890

Claim:
A computer implemented method for finding documents which relate to a portion of a temporal document, comprising: (a) presenting a temporal document, wherein the temporal document is a time related document; (b) determining text associated with portions of the temporal document, and (c) storing in a buffer each term in said associated text, together with a time in the temporal document at which the term occurs; (d) in response to a user signal of interest at a particular time during the temporal document, identifying a portion of the temporal document that occurred during a time interval before said user signal of interest; (e) for a first term in said buffer occurring during said time interval, determining a first weight based on: a function W(t) associated with said time interval, and the time in the temporal document at which said first term occurs, wherein W(t) is equal for all times between t 1 before the signal of interest is given and t 2 before the signal is given, and decreases from t 1 until the time of the signal, and increases from a time t 3 before the signal is given to the time t 2 , and is zero for all other times; (f) identifying related documents by use of information retrieval techniques as applied to said first term and said first weight.