Skip to main content

String similarity searching using the FastSS algorithm.

Project description

FastSS is a string similarity searching algorithm. For each query, which

consists of query string s and distance d, it retrieves all the words in a dictionary whose edit distance from s is equal or smaller than d. FastSS is an offline searching algorithm, as it needs to create an index of its dictionary before it can search. For more information on FastSS you can visit the website of its inventors at <http://fastss.csg.uzh.ch/>.

Here are some of the characteristics of this implementation, to help you decide whether it fits your purposes:

  • Very fast searching at the cost of a rather large index size.

  • Indices are plain sqlite databases so they carry ACID guarantees.

  • Only unicode strings are supported.

Example of usage:

>>> import fastss
>>> manager = fastss.FastSSManager('idx')
>>> manager.create_index(False)
# Insert lemmas in the index, using 20% of their length as the depth:
>>> manager.update_index([u'Mike', u'Johnny', u'johnny'], lambda s: int(len(s)*.2))
# Search:
>>> for match in manager.search('Mike', 2): print match
(u'Mike', 0)
>>> for match in manager.search('johnny', 1): print match
(u'johnny', 0)
(u'Johnny', 1)
>>> for match in manager.search('johnny', 1, nocase=True): print match
(u'Johnny', 0)
(u'johnny', 0)
>>> for match in manager.search('johny', 2, nocase=True): print match
(u'johnny', 1)
(u'Johnny', 1)

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distributions

fastss-0.095.zip (18.5 kB view details)

Uploaded Source

fastss-0.095.tar.gz (16.4 kB view details)

Uploaded Source

Built Distribution

fastss-0.095.win32.exe (203.2 kB view details)

Uploaded Source

File details

Details for the file fastss-0.095.zip.

File metadata

  • Download URL: fastss-0.095.zip
  • Upload date:
  • Size: 18.5 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No

File hashes

Hashes for fastss-0.095.zip
Algorithm Hash digest
SHA256 e3b3f2dee38e488c0761cee44e4a9278d5aa2a683b838fc01e90c41df40c908a
MD5 4ea8ddb5aecd8d886ea1b112e3faf917
BLAKE2b-256 09d365f4bedbfffa423b9d36c69b8dde34006b08364df6ae3372faf974513c25

See more details on using hashes here.

File details

Details for the file fastss-0.095.tar.gz.

File metadata

  • Download URL: fastss-0.095.tar.gz
  • Upload date:
  • Size: 16.4 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No

File hashes

Hashes for fastss-0.095.tar.gz
Algorithm Hash digest
SHA256 4a26aae1b0c789bbfa62e20fd8d4a1ed38b95f2b0b165645800f486ec48cfc99
MD5 2f1213a62ea8f70106ee237543e0dee8
BLAKE2b-256 20b9a0602254d885d3debd1931a91139ecfa013c87deb802340237d4b7c54575

See more details on using hashes here.

File details

Details for the file fastss-0.095.win32.exe.

File metadata

  • Download URL: fastss-0.095.win32.exe
  • Upload date:
  • Size: 203.2 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No

File hashes

Hashes for fastss-0.095.win32.exe
Algorithm Hash digest
SHA256 738531763e5e3c29aa6eadaea417daf905a581c4b743af0847ea3a71ff3cc51a
MD5 54d80afe8a7e1b5b770724874390f0e7
BLAKE2b-256 aaa829d7621d5388442e826cd2b5c31c7edc443302e943511b17a2d9b12ea7ca

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page