System and method for positional representation of content for efficient indexing, search, retrieval, and compression
First Claim
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1. A method of advancing within a video clip of a multimedia document, the method comprising:
- searching first entries of an inverted index for a first annotation matching a query, each first entry having a unique first annotation and a list of document identifiers of multimedia documents having the unique first annotation;
upon determining the matching first annotation, searching second entries of a positional representation corresponding to one of the document identifiers for a second annotation matching the query, each second entry having a unique second annotation and occurrence positions of the unique second annotation within a multimedia document;
upon determining the matching second annotation, deriving a time within the video clip of the multimedia document corresponding to the one document identifier from an occurrence position of the second annotation, and advancing presentation of the video clip to the derived time,wherein the method is executed by a processor.
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Abstract
A method of generating a positional representation of a document, including identifying each unique term in a document and positions in the document at which the unique term appears, and for the each unique term, storing positional information derived from the positions into a positional representation.
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Citations
12 Claims
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1. A method of advancing within a video clip of a multimedia document, the method comprising:
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searching first entries of an inverted index for a first annotation matching a query, each first entry having a unique first annotation and a list of document identifiers of multimedia documents having the unique first annotation; upon determining the matching first annotation, searching second entries of a positional representation corresponding to one of the document identifiers for a second annotation matching the query, each second entry having a unique second annotation and occurrence positions of the unique second annotation within a multimedia document; upon determining the matching second annotation, deriving a time within the video clip of the multimedia document corresponding to the one document identifier from an occurrence position of the second annotation, and advancing presentation of the video clip to the derived time, wherein the method is executed by a processor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of generating an inverted index for a collection of multimedia documents, the method comprising:
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generating a positional representation of each multimedia document, at least one entry of the positional representation including a unique annotation and at least one occurrence position within its corresponding multimedia document, wherein times within a video clip of the corresponding multimedia document are derivable from the occurrence position; determining for each unique annotation among the generated positional representations, the positional representations that contain the annotation; and creating an entry in the inverted index for each unique annotation among the generated positional representations including the annotation and document identifiers of the multimedia documents of the positional representations that contain the annotation, wherein the method is executed by a processor. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification