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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G06F16/30
of unstructured textual data
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G06F16/3325
Reformulation based on results of preceding query
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G06F16/3326
using relevance feedback from the user, e.g. relevance feedback on documents, documents sets, document terms or passages
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G06F16/3328
using graphical result space presentation or visualisation
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