mirror of
https://github.com/osm-search/Nominatim.git
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5e45e0b3d7
Complete rewrite of wikipedia processing scripts, addition of processing wikidata, new data source, new documentation by @tchaddad during Google Summer of Code 2019 project.
78 lines
3.6 KiB
Bash
Executable File
78 lines
3.6 KiB
Bash
Executable File
#!/bin/bash
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psqlcmd() {
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psql wikiprocessingdb
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}
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mysql2pgsqlcmd() {
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./mysql2pgsql.perl /dev/stdin /dev/stdout
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}
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# list the languages to process (refer to List of Wikipedias here: https://en.wikipedia.org/wiki/List_of_Wikipedias)
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language=( "ar" "bg" "ca" "cs" "da" "de" "en" "es" "eo" "eu" "fa" "fr" "ko" "hi" "hr" "id" "it" "he" "lt" "hu" "ms" "nl" "ja" "no" "pl" "pt" "kk" "ro" "ru" "sk" "sl" "sr" "fi" "sv" "tr" "uk" "vi" "vo" "war" "zh" )
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# create wikipedia calculation tables
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echo "CREATE TABLE linkcounts (language text, title text, count integer, sumcount integer, lat double precision, lon double precision);" | psqlcmd
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echo "CREATE TABLE wikipedia_article (language text NOT NULL, title text NOT NULL, langcount integer, othercount integer, totalcount integer, lat double precision, lon double precision, importance double precision, title_en text, osm_type character(1), osm_id bigint );" | psqlcmd
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echo "CREATE TABLE wikipedia_redirect (language text, from_title text, to_title text );" | psqlcmd
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# download individual wikipedia language tables
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for i in "${language[@]}"
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do
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wget https://dumps.wikimedia.org/${i}wiki/latest/${i}wiki-latest-page.sql.gz
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wget https://dumps.wikimedia.org/${i}wiki/latest/${i}wiki-latest-pagelinks.sql.gz
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wget https://dumps.wikimedia.org/${i}wiki/latest/${i}wiki-latest-langlinks.sql.gz
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wget https://dumps.wikimedia.org/${i}wiki/latest/${i}wiki-latest-redirect.sql.gz
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done
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# import individual wikipedia language tables
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for i in "${language[@]}"
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do
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gzip -dc ${i}wiki-latest-pagelinks.sql.gz | sed "s/\`pagelinks\`/\`${i}pagelinks\`/g" | mysql2pgsqlcmd | psqlcmd
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gzip -dc ${i}wiki-latest-page.sql.gz | sed "s/\`page\`/\`${i}page\`/g" | mysql2pgsqlcmd | psqlcmd
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gzip -dc ${i}wiki-latest-langlinks.sql.gz | sed "s/\`langlinks\`/\`${i}langlinks\`/g" | mysql2pgsqlcmd | psqlcmd
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gzip -dc ${i}wiki-latest-redirect.sql.gz | sed "s/\`redirect\`/\`${i}redirect\`/g" | mysql2pgsqlcmd | psqlcmd
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done
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# process language tables and associated pagelink counts
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for i in "${language[@]}"
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do
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echo "create table ${i}pagelinkcount as select pl_title as title,count(*) as count from ${i}pagelinks where pl_namespace = 0 group by pl_title;" | psqlcmd
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echo "insert into linkcounts select '${i}',pl_title,count(*) from ${i}pagelinks where pl_namespace = 0 group by pl_title;" | psqlcmd
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echo "insert into wikipedia_redirect select '${i}',page_title,rd_title from ${i}redirect join ${i}page on (rd_from = page_id) where page_namespace = 0 and rd_namespace = 0;" | psqlcmd
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echo "alter table ${i}pagelinkcount add column othercount integer;" | psqlcmd
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echo "update ${i}pagelinkcount set othercount = 0;" | psqlcmd
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for j in "${language[@]}"
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do
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echo "update ${i}pagelinkcount set othercount = ${i}pagelinkcount.othercount + x.count from (select page_title as title,count from ${i}langlinks join ${i}page on (ll_from = page_id) join ${j}pagelinkcount on (ll_lang = '${j}' and ll_title = title)) as x where x.title = ${i}pagelinkcount.title;" | psqlcmd
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done
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echo "insert into wikipedia_article select '${i}', title, count, othercount, count+othercount from ${i}pagelinkcount;" | psqlcmd
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done
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# calculate importance score for each wikipedia page
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echo "update wikipedia_article set importance = log(totalcount)/log((select max(totalcount) from wikipedia_article))" | psqlcmd
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# clean up intermediate tables to conserve space
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for i in "${language[@]}"
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do
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echo "DROP TABLE ${i}pagelinks;" | psqlcmd
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echo "DROP TABLE ${i}page;" | psqlcmd
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echo "DROP TABLE ${i}langlinks;" | psqlcmd
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echo "DROP TABLE ${i}redirect;" | psqlcmd
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echo "DROP TABLE ${i}pagelinkcount;" | psqlcmd
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done
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