DIFF Subgroup
G06F 16/953 Querying, e.g. by the use of web search engines
Introduced: January 2019
Full Title
Information retrieval; Database structures therefor; File system structures therefor > Details of database functions independent of the retrieved data types > Retrieval from the web > Querying, e.g. by the use of web search engines
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
IPC defines codes here since 2019.
Child Classifications
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- G06F 16/9535 Search customisation based on user profiles and personalisation since 2019 IPC+CPC Available in IPC and CPC
- G06F 16/9536 Search customisation based on social or collaborative filtering since 2019 IPC+CPC Available in IPC and CPC
- G06F 16/9537 Spatial or temporal dependent retrieval, e.g. spatiotemporal queries since 2019 IPC+CPC Available in IPC and CPC