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PHYSICS
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G06
COMPUTING; CALCULATING OR COUNTING
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G06F
ELECTRIC DIGITAL DATA PROCESSING
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G06F16/00
Information retrieval; Database structures therefor; File system structures therefor
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G06F16/30
of unstructured textual data
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G06F16/33
Querying
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G06F16/335
Filtering based on additional data, e.g. user or group profiles
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