Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06F
ELECTRIC DIGITAL DATA PROCESSING
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16/00
Information retrieval; Database structures therefor; File system structures therefor
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G06F16/90
Details of database functions independent of the retrieved data types
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G06F16/953
Querying, e.g. by the use of web search engines
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G06F16/9536
Search customisation based on social or collaborative filtering
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