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settings.js
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settings.js
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const _ = require('lodash');
const peliasConfig = require('pelias-config');
const punctuation = require('./punctuation');
const synonyms = require('./synonyms/loader').load();
require('./configValidation').validate(peliasConfig.generate());
function generate(){
var config = peliasConfig.generate();
// Default settings
var settings = {
"index": {
"similarity": {
"peliasDefaultSimilarity": {
"type": "BM25",
"k1": 1.2,
"b": 0.75
}
}
},
"analysis": {
"tokenizer": {
"peliasTokenizer": {
"type": "pattern",
"pattern": "[\\s,/\\\\-]+"
}
},
"analyzer": {
"peliasAdmin": {
"type": "custom",
"tokenizer": "peliasTokenizer",
"char_filter" : ["punctuation", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"synonyms/custom_admin/multiword",
"admin_synonyms_multiplexer",
"icu_folding",
"word_delimiter",
"unique_only_same_position",
"notnull",
"flatten_graph"
]
},
"peliasIndexOneEdgeGram" : {
"type": "custom",
"tokenizer" : "peliasTokenizer",
"char_filter" : ["punctuation", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"synonyms/custom_name/multiword",
"synonyms/custom_street/multiword",
"synonyms/custom_admin/multiword",
"name_synonyms_multiplexer",
"icu_folding",
"remove_ordinals",
"removeAllZeroNumericPrefix",
"peliasOneEdgeGramFilter",
"unique_only_same_position",
"notnull",
"flatten_graph"
]
},
"peliasQuery": {
"type": "custom",
"tokenizer": "peliasTokenizer",
"char_filter": ["punctuation", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"icu_folding",
"remove_ordinals",
"removeAllZeroNumericPrefix",
"unique_only_same_position",
"notnull"
]
},
"peliasPhrase": {
"type": "custom",
"tokenizer":"peliasTokenizer",
"char_filter" : ["punctuation", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"remove_duplicate_spaces",
"synonyms/custom_name/multiword",
"synonyms/custom_street/multiword",
"synonyms/custom_admin/multiword",
"name_synonyms_multiplexer",
"icu_folding",
"remove_ordinals",
"removeAllZeroNumericPrefix",
"unique_only_same_position",
"notnull",
"flatten_graph"
]
},
"peliasZip": {
"type": "custom",
"tokenizer":"keyword",
"char_filter": ["alphanumeric", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"icu_folding",
"unique_only_same_position",
"notnull"
]
},
"peliasUnit": {
"type": "custom",
"tokenizer":"keyword",
"char_filter": ["alphanumeric", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"icu_folding",
"unique_only_same_position",
"notnull"
]
},
"peliasHousenumber": {
"type": "custom",
"tokenizer":"standard",
"char_filter" : ["numeric"]
},
"peliasStreet": {
"type": "custom",
"tokenizer":"peliasTokenizer",
"char_filter" : ["punctuation", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"remove_duplicate_spaces",
"synonyms/custom_street/multiword",
"street_synonyms_multiplexer",
"icu_folding",
"remove_ordinals",
"trim",
"unique_only_same_position",
"notnull",
"flatten_graph",
]
},
"peliasIndexCountryAbbreviation": {
"type": "custom",
"tokenizer": "peliasTokenizer",
"char_filter": ["punctuation", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"icu_folding",
"country_abbreviation_synonyms_multiplexer",
"unique_only_same_position",
"notnull",
"flatten_graph"
]
},
"peliasIndexCountryAbbreviationOneEdgeGram": {
"type": "custom",
"tokenizer": "peliasTokenizer",
"char_filter": ["punctuation", "nfkc_normalizer"],
"filter": [
"lowercase",
"trim",
"icu_folding",
"country_abbreviation_synonyms_multiplexer",
"peliasOneEdgeGramFilter",
"unique_only_same_position",
"notnull",
"flatten_graph"
]
},
},
"filter" : {
"street_synonyms_multiplexer": {
"type": "multiplexer",
"preserve_original": false,
"filters": [
"synonyms/custom_street",
"synonyms/personal_titles",
"synonyms/streets",
"synonyms/directionals",
"synonyms/british_american_english",
]
},
"name_synonyms_multiplexer": {
"type": "multiplexer",
"preserve_original": false,
"filters": [
"synonyms/custom_name",
"synonyms/custom_street",
"synonyms/custom_admin",
"synonyms/personal_titles",
"synonyms/place_names",
"synonyms/streets",
"synonyms/directionals",
"synonyms/punctuation",
"synonyms/british_american_english"
]
},
"admin_synonyms_multiplexer": {
"type": "multiplexer",
"preserve_original": false,
"filters": [
"synonyms/custom_admin",
"synonyms/personal_titles",
"synonyms/place_names"
]
},
"country_abbreviation_synonyms_multiplexer": {
"type": "multiplexer",
"preserve_original": false,
"filters": [
"synonyms/country_codes"
]
},
"notnull" :{
"type" : "length",
"min" : 1
},
"unique_only_same_position": {
"type": "unique",
"only_on_same_position": "true"
},
"peliasOneEdgeGramFilter": {
"type" : "edge_ngram",
"min_gram" : 1,
"max_gram" : 24
},
"removeAllZeroNumericPrefix" :{
"type" : "pattern_replace",
"pattern" : "^(0*)",
"replacement" : ""
},
"remove_ordinals" : {
"type" : "pattern_replace",
"pattern": "(?i)((^| )((1)st?|(2)nd?|(3)rd?|([4-9])th?)|(([0-9]*)(1[0-9])th?)|(([0-9]*[02-9])((1)st?|(2)nd?|(3)rd?|([04-9])th?))($| ))",
"replacement": "$2$4$5$6$7$9$10$12$14$15$16$17$18"
},
"remove_duplicate_spaces" : {
"type" : "pattern_replace",
"pattern": " +",
"replacement": " "
},
// more generated below
},
"char_filter": {
"punctuation" : {
"type" : "mapping",
"mappings" : punctuation.blacklist.map(function(c){
return c + '=>';
})
},
"alphanumeric" : {
"type" : "pattern_replace",
"pattern": "[^a-zA-Z0-9]",
"replacement": ""
},
"numeric" : {
"type" : "pattern_replace",
"pattern": "[^0-9]",
"replacement": " "
},
"nfkc_normalizer": {
"type": "icu_normalizer",
"name": "nfkc",
"mode": "compose"
}
}
}
};
// dynamically create filters for all synonym files in the ./synonyms directory.
// each filter is given the same name as the file, paths separators are replaced with
// underscores and the file extension is removed.
// note: if no synonym entries are present in the list we use an array
// containing an empty space to avoid elasticsearch schema parsing errors.
_.each(synonyms, (entries, name) => {
// same tokenizer regex as above except without comma
// (which is a delimeter within the synonym files)
const tokenizerRegex = new RegExp('[\\s/\\\\-]+');
const singleWordEntries = entries.filter(e => !tokenizerRegex.test(e))
const multiWordEntries = entries.filter(e => tokenizerRegex.test(e))
// generate a filter containing single-word synonyms
settings.analysis.filter[`synonyms/${name}`] = {
"type": "synonym",
"synonyms": !_.isEmpty(singleWordEntries) ? singleWordEntries : ['']
};
// generate a filter containing multi-word synonyms
settings.analysis.filter[`synonyms/${name}/multiword`] = {
"type": "synonym",
"synonyms": !_.isEmpty(multiWordEntries) ? multiWordEntries : ['']
};
});
// Merge settings from pelias/config
settings = _.merge({}, settings, _.get(config, 'elasticsearch.settings', {}));
return settings;
}
module.exports = generate;