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implement proof of concept postgresql pg_trgm N-gram based marking of similar article titles as read automatically

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Andrew Dolgov
2012-07-09 19:49:48 +04:00
parent 687bb90d27
commit 2ea9bbfd07
2 changed files with 23 additions and 0 deletions
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21
include/rssfuncs.php
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@@ -979,6 +979,27 @@
$published = 'false';
}
// N-grams
if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
$result = db_query($link, "SELECT COUNT(*) AS similar FROM
ttrss_entries,ttrss_user_entries
WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
AND owner_uid = $owner_uid");
$ngram_similar = db_fetch_result($result, 0, "similar");
if ($debug_enabled) {
_debug("update_rss_feed: N-gram similar results: $ngram_similar");
}
if ($ngram_similar > 0) {
$unread = 'false';
}
}
$result = db_query($link,
"INSERT INTO ttrss_user_entries
(ref_id, owner_uid, feed_id, unread, last_read, marked,