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add new analyser for houenumbers

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This analyser makes spaces optional.
This commit is contained in:
Sarah Hoffmann
2022-02-16 17:18:23 +01:00
parent a6903651fc
commit f03a05f6bb
3 changed files with 284 additions and 3 deletions
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61
nominatim/tokenizer/token_analysis/housenumbers.py Normal file
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@@ -0,0 +1,61 @@
# SPDX-License-Identifier: GPL-2.0-only
#
# This file is part of Nominatim. (https://nominatim.org)
#
# Copyright (C) 2022 by the Nominatim developer community.
# For a full list of authors see the git log.
"""
Specialized processor for housenumbers. Analyses common housenumber patterns
and creates variants for them.
"""
import re
from nominatim.tokenizer.token_analysis.generic_mutation import MutationVariantGenerator
RE_NON_DIGIT = re.compile('[^0-9]')
RE_DIGIT_ALPHA = re.compile(r'(\d)\s*([^\d\s␣])')
RE_ALPHA_DIGIT = re.compile(r'([^\s\d␣])\s*(\d)')
### Configuration section
def configure(rules, normalization_rules):
""" All behaviour is currently hard-coded.
"""
return None
### Analysis section
def create(normalizer, transliterator, config):
""" Create a new token analysis instance for this module.
"""
return HousenumberTokenAnalysis(normalizer, transliterator)
class HousenumberTokenAnalysis:
""" Detects common housenumber patterns and normalizes them.
"""
def __init__(self, norm, trans):
self.norm = norm
self.trans = trans
self.mutator = MutationVariantGenerator('␣', (' ', ''))
def normalize(self, name):
""" Return the normalized form of the housenumber.
"""
# shortcut for number-only numbers, which make up 90% of the data.
if RE_NON_DIGIT.search(name) is None:
return name
norm = self.trans.transliterate(self.norm.transliterate(name))
norm = RE_DIGIT_ALPHA.sub(r'\1␣\2', norm)
norm = RE_ALPHA_DIGIT.sub(r'\1␣\2', norm)
return norm
def get_variants_ascii(self, norm_name):
""" Compute the spelling variants for the given normalized housenumber.
Generates variants for optional spaces (marked with '␣').
"""
return list(self.mutator.generate([norm_name]))

2
settings/icu_tokenizer.yaml
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@@ -41,6 +41,8 @@ sanitizers:
mode: append mode: append
token-analysis: token-analysis:
- analyzer: generic - analyzer: generic
- id: "@housenumber"
analyzer: housenumbers
- id: bg - id: bg
analyzer: generic analyzer: generic
mode: variant-only mode: variant-only

224
test/bdd/db/query/housenumbers.feature
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@@ -9,10 +9,10 @@ Feature: Searching of house numbers
| | | | | 4 | | | | | | 4 |
Scenario: A simple numeral housenumber is found Scenario: A simple ascii digit housenumber is found
Given the places Given the places
| osm | class | type | housenr | geometry | | osm | class | type | housenr | geometry |
| N1 | building | yes | 45 | 9 | | N1 | building | yes | 45 | 9 |
And the places And the places
| osm | class | type | name | geometry | | osm | class | type | name | geometry |
| W10 | highway | path | North Road | 1,2,3 | | W10 | highway | path | North Road | 1,2,3 |
@@ -27,6 +27,34 @@ Feature: Searching of house numbers
| N1 | | N1 |
Scenario Outline: Numeral housenumbers in any script are found
Given the places
| osm | class | type | housenr | geometry |
| N1 | building | yes | <number> | 9 |
And the places
| osm | class | type | name | geometry |
| W10 | highway | path | North Road | 1,2,3 |
When importing
And sending search query "45, North Road"
Then results contain
| osm |
| N1 |
When sending search query "North Road ④⑤"
Then results contain
| osm |
| N1 |
When sending search query "North Road 𑁪𑁫"
Then results contain
| osm |
| N1 |
Examples:
| number |
| 45 |
| ④⑤ |
| 𑁪𑁫 |
Scenario Outline: Each housenumber in a list is found Scenario Outline: Each housenumber in a list is found
Given the places Given the places
| osm | class | type | housenr | geometry | | osm | class | type | housenr | geometry |
@@ -55,6 +83,196 @@ Feature: Searching of house numbers
| 2, 4, 12 | | 2, 4, 12 |
Scenario Outline: Housenumber - letter combinations are found
Given the places
| osm | class | type | housenr | geometry |
| N1 | building | yes | <hnr> | 9 |
And the places
| osm | class | type | name | geometry |
| W10 | highway | path | Multistr | 1,2,3 |
When importing
When sending search query "2A Multistr"
Then results contain
| osm |
| N1 |
When sending search query "2 a Multistr"
Then results contain
| osm |
| N1 |
When sending search query "2-A Multistr"
Then results contain
| osm |
| N1 |
When sending search query "Multistr 2 A"
Then results contain
| osm |
| N1 |
Examples:
| hnr |
| 2a |
| 2 A |
| 2-a |
| 2/A |
Scenario Outline: Number - Number combinations as a housenumber are found
Given the places
| osm | class | type | housenr | geometry |
| N1 | building | yes | <hnr> | 9 |
And the places
| osm | class | type | name | geometry |
| W10 | highway | path | Chester St | 1,2,3 |
When importing
When sending search query "34-10 Chester St"
Then results contain
| osm |
| N1 |
When sending search query "34/10 Chester St"
Then results contain
| osm |
| N1 |
When sending search query "34 10 Chester St"
Then results contain
| osm |
| N1 |
When sending search query "3410 Chester St"
Then results contain
| osm |
| W10 |
Examples:
| hnr |
| 34-10 |
| 34 10 |
| 34/10 |
Scenario Outline: a bis housenumber is found
Given the places
| osm | class | type | housenr | geometry |
| N1 | building | yes | <hnr> | 9 |
And the places
| osm | class | type | name | geometry |
| W10 | highway | path | Rue Paris | 1,2,3 |
When importing
When sending search query "Rue Paris 45bis"
Then results contain
| osm |
| N1 |
When sending search query "Rue Paris 45 BIS"
Then results contain
| osm |
| N1 |
When sending search query "Rue Paris 45BIS"
Then results contain
| osm |
| N1 |
When sending search query "Rue Paris 45 bis"
Then results contain
| osm |
| N1 |
Examples:
| hnr |
| 45bis |
| 45BIS |
| 45 BIS |
| 45 bis |
Scenario Outline: a ter housenumber is found
Given the places
| osm | class | type | housenr | geometry |
| N1 | building | yes | <hnr> | 9 |
And the places
| osm | class | type | name | geometry |
| W10 | highway | path | Rue du Berger | 1,2,3 |
When importing
When sending search query "Rue du Berger 45ter"
Then results contain
| osm |
| N1 |
When sending search query "Rue du Berger 45 TER"
Then results contain
| osm |
| N1 |
When sending search query "Rue du Berger 45TER"
Then results contain
| osm |
| N1 |
When sending search query "Rue du Berger 45 ter"
Then results contain
| osm |
| N1 |
Examples:
| hnr |
| 45ter |
| 45TER |
| 45 ter |
| 45 TER |
Scenario Outline: a number - letter - number combination housenumber is found
Given the places
| osm | class | type | housenr | geometry |
| N1 | building | yes | <hnr> | 9 |
And the places
| osm | class | type | name | geometry |
| W10 | highway | path | Herengracht | 1,2,3 |
When importing
When sending search query "501-H 1 Herengracht"
Then results contain
| osm |
| N1 |
When sending search query "501H-1 Herengracht"
Then results contain
| osm |
| N1 |
When sending search query "501H1 Herengracht"
Then results contain
| osm |
| N1 |
When sending search query "501-H1 Herengracht"
Then results contain
| osm |
| N1 |
Examples:
| hnr |
| 501 H1 |
| 501H 1 |
| 501/H/1 |
| 501h1 |
Scenario Outline: Russian housenumbers are found
Given the places
| osm | class | type | housenr | geometry |
| N1 | building | yes | <hnr> | 9 |
And the places
| osm | class | type | name | geometry |
| W10 | highway | path | Голубинская улица | 1,2,3 |
When importing
When sending search query "Голубинская улица 55к3"
Then results contain
| osm |
| N1 |
When sending search query "Голубинская улица 55 k3"
Then results contain
| osm |
| N1 |
When sending search query "Голубинская улица 55 к-3"
Then results contain
| osm |
| N1 |
Examples:
| hnr |
| 55к3 |
| 55 к3 |
Scenario: A name mapped as a housenumber is found Scenario: A name mapped as a housenumber is found
Given the places Given the places
| osm | class | type | housenr | geometry | | osm | class | type | housenr | geometry |