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https://github.com/sbrl/Pepperminty-Wiki.git
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Refine indexer by removing 'stop words'.
More information at https://en.wikipedia.org/wiki/Stop_words
This commit is contained in:
parent
be9c822e17
commit
221c61a1b3
3 changed files with 205 additions and 41 deletions
122
build/index.php
122
build/index.php
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@ -1264,36 +1264,118 @@ register_module([
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header("content-type: text/plain");
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$source = file_get_contents("$env->page.md");
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$source_length = strlen($source);
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$index = [];
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// Regex from
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$terms = preg_split("/((^\p{P}+)|(\p{P}*\s+\p{P}*)|(\p{P}+$))/", $source, -1, PREG_SPLIT_NO_EMPTY);
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$i = 0;
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foreach($terms as $term)
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{
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$nterm = strtolower($term);
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if(!isset($index[$nterm]))
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{
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$index[$nterm] = [ "freq" => 0, "offsets" => [] ];
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}
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$index[$nterm]["freq"]++;
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$index[$nterm]["offsets"][] = $i;
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$i++;
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}
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$index = search::index($source);
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var_dump($env->page);
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var_dump($source);
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echo("source length: $source_length\n");
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var_dump($index);
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});
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}
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]);
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class search
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{
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public static $stop_words = [
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"a", "about", "above", "above", "across", "after", "afterwards", "again", "against",
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"all", "almost", "alone", "along", "already", "also", "although", "always", "am", "among",
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"amongst", "amoungst", "amount", "an", "and", "another", "any", "anyhow", "anyone", "anything",
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"anyway", "anywhere", "are", "around", "as", "at", "back", "be", "became", "because", "become",
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"becomes", "becoming", "been", "before", "beforehand", "behind", "being", "below", "beside",
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"besides", "between", "beyond", "bill", "both", "bottom", "but", "by", "call", "can", "cannot",
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"cant", "co", "con", "could", "couldnt", "cry", "de", "describe", "detail", "do", "done", "down",
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"due", "during", "each", "eg", "eight", "either", "eleven", "else", "elsewhere", "empty",
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"enough", "etc", "even", "ever", "every", "everyone", "everything", "everywhere", "except",
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"few", "fifteen", "fify", "fill", "find", "fire", "first", "five", "for", "former", "formerly",
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"forty", "found", "four", "from", "front", "full", "further", "get", "give", "go", "had", "has",
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"hasnt", "have", "he", "hence", "her", "here", "hereafter", "hereby", "herein", "hereupon",
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"hers", "herself", "him", "himself", "his", "how", "however", "hundred", "ie", "if", "in",
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"inc", "indeed", "interest", "into", "is", "it", "its", "itself", "keep", "last", "latter",
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"latterly", "least", "less", "ltd", "made", "many", "may", "me", "meanwhile", "might", "mill",
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"mine", "more", "moreover", "most", "mostly", "move", "much", "must", "my", "myself", "name",
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"namely", "neither", "never", "nevertheless", "next", "nine", "no", "nobody", "none", "noone",
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"nor", "not", "nothing", "now", "nowhere", "of", "off", "often", "on", "once", "one", "only",
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"onto", "or", "other", "others", "otherwise", "our", "ours", "ourselves", "out", "over", "own",
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"part", "per", "perhaps", "please", "put", "rather", "re", "same", "see", "seem", "seemed",
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"seeming", "seems", "serious", "several", "she", "should", "show", "side", "since", "sincere",
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"six", "sixty", "so", "some", "somehow", "someone", "something", "sometime", "sometimes",
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"somewhere", "still", "such", "system", "take", "ten", "than", "that", "the", "their", "them",
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"themselves", "then", "thence", "there", "thereafter", "thereby", "therefore", "therein",
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"thereupon", "these", "they", "thickv", "thin", "third", "this", "those", "though", "three",
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"through", "throughout", "thru", "thus", "to", "together", "too", "top", "toward", "towards",
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"twelve", "twenty", "two", "un", "under", "until", "up", "upon", "us", "very", "via", "was",
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"we", "well", "were", "what", "whatever", "when", "whence", "whenever", "where", "whereafter",
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"whereas", "whereby", "wherein", "whereupon", "wherever", "whether", "which", "while", "whither",
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"who", "whoever", "whole", "whom", "whose", "why", "will", "with", "within", "without", "would",
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"yet", "you", "your", "yours", "yourself", "yourselves"
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];
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public static function index($source)
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{
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$source = html_entity_decode($source, ENT_QUOTES);
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$source_length = strlen($source);
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$index = [];
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// Regex from
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$terms = preg_split("/((^\p{P}+)|(\p{P}*\s+\p{P}*)|(\p{P}+$))/", $source, -1, PREG_SPLIT_NO_EMPTY);
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$i = 0;
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foreach($terms as $term)
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{
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$nterm = strtolower($term);
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// Skip over stop words (see https://en.wikipedia.org/wiki/Stop_words)
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if(in_array($nterm, self::$stop_words)) continue;
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if(!isset($index[$nterm]))
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{
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$index[$nterm] = [ "freq" => 0, "offsets" => [] ];
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}
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$index[$nterm]["freq"]++;
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$index[$nterm]["offsets"][] = $i;
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$i++;
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}
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self::sort_index($index);
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return $index;
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}
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/*
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* @sumary Sorts an index alphabetically. This allows us to do a binary search instead of a regular sequential search.
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*/
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public static function sort_index(&$index)
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{
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ksort($index, SORT_NATURAL);
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}
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}
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class ids
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{
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/*
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* @summary Gets the page id associated with the given pagename.
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*/
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public static function get_page_id($pagename)
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{
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global $idindex;
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}
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/*
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* @summary Gets the page name associated with the given page id.
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*/
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public static function get_id_pagename($id)
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{
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global $idindex;
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}
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}
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@ -50,7 +50,7 @@
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"author": "Starbeamrainbowlabs",
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"description": "Adds proper search functionality to Pepperminty Wiki. Note that this module, at the moment, just contains test code while I figure out how best to write a search engine.",
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"id": "feature-search",
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"lastupdate": 1446021592,
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"lastupdate": 1446023560,
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"optional": false
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},
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{
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@ -14,34 +14,116 @@ register_module([
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header("content-type: text/plain");
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$source = file_get_contents("$env->page.md");
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$source_length = strlen($source);
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$index = [];
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// Regex from
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$terms = preg_split("/((^\p{P}+)|(\p{P}*\s+\p{P}*)|(\p{P}+$))/", $source, -1, PREG_SPLIT_NO_EMPTY);
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$i = 0;
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foreach($terms as $term)
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{
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$nterm = strtolower($term);
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if(!isset($index[$nterm]))
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{
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$index[$nterm] = [ "freq" => 0, "offsets" => [] ];
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}
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$index[$nterm]["freq"]++;
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$index[$nterm]["offsets"][] = $i;
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$i++;
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}
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$index = search::index($source);
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var_dump($env->page);
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var_dump($source);
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echo("source length: $source_length\n");
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var_dump($index);
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});
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}
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]);
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class search
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{
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public static $stop_words = [
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"a", "about", "above", "above", "across", "after", "afterwards", "again", "against",
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"all", "almost", "alone", "along", "already", "also", "although", "always", "am", "among",
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"amongst", "amoungst", "amount", "an", "and", "another", "any", "anyhow", "anyone", "anything",
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"anyway", "anywhere", "are", "around", "as", "at", "back", "be", "became", "because", "become",
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"becomes", "becoming", "been", "before", "beforehand", "behind", "being", "below", "beside",
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"besides", "between", "beyond", "bill", "both", "bottom", "but", "by", "call", "can", "cannot",
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"cant", "co", "con", "could", "couldnt", "cry", "de", "describe", "detail", "do", "done", "down",
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"due", "during", "each", "eg", "eight", "either", "eleven", "else", "elsewhere", "empty",
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"enough", "etc", "even", "ever", "every", "everyone", "everything", "everywhere", "except",
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"few", "fifteen", "fify", "fill", "find", "fire", "first", "five", "for", "former", "formerly",
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"forty", "found", "four", "from", "front", "full", "further", "get", "give", "go", "had", "has",
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"hasnt", "have", "he", "hence", "her", "here", "hereafter", "hereby", "herein", "hereupon",
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"hers", "herself", "him", "himself", "his", "how", "however", "hundred", "ie", "if", "in",
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"inc", "indeed", "interest", "into", "is", "it", "its", "itself", "keep", "last", "latter",
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"latterly", "least", "less", "ltd", "made", "many", "may", "me", "meanwhile", "might", "mill",
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"mine", "more", "moreover", "most", "mostly", "move", "much", "must", "my", "myself", "name",
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"namely", "neither", "never", "nevertheless", "next", "nine", "no", "nobody", "none", "noone",
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"nor", "not", "nothing", "now", "nowhere", "of", "off", "often", "on", "once", "one", "only",
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"onto", "or", "other", "others", "otherwise", "our", "ours", "ourselves", "out", "over", "own",
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"part", "per", "perhaps", "please", "put", "rather", "re", "same", "see", "seem", "seemed",
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"seeming", "seems", "serious", "several", "she", "should", "show", "side", "since", "sincere",
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"six", "sixty", "so", "some", "somehow", "someone", "something", "sometime", "sometimes",
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"somewhere", "still", "such", "system", "take", "ten", "than", "that", "the", "their", "them",
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"themselves", "then", "thence", "there", "thereafter", "thereby", "therefore", "therein",
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"thereupon", "these", "they", "thickv", "thin", "third", "this", "those", "though", "three",
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"through", "throughout", "thru", "thus", "to", "together", "too", "top", "toward", "towards",
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"twelve", "twenty", "two", "un", "under", "until", "up", "upon", "us", "very", "via", "was",
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"we", "well", "were", "what", "whatever", "when", "whence", "whenever", "where", "whereafter",
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"whereas", "whereby", "wherein", "whereupon", "wherever", "whether", "which", "while", "whither",
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"who", "whoever", "whole", "whom", "whose", "why", "will", "with", "within", "without", "would",
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"yet", "you", "your", "yours", "yourself", "yourselves"
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];
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public static function index($source)
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{
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$source = html_entity_decode($source, ENT_QUOTES);
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$source_length = strlen($source);
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$index = [];
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// Regex from
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$terms = preg_split("/((^\p{P}+)|(\p{P}*\s+\p{P}*)|(\p{P}+$))/", $source, -1, PREG_SPLIT_NO_EMPTY);
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$i = 0;
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foreach($terms as $term)
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{
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$nterm = strtolower($term);
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// Skip over stop words (see https://en.wikipedia.org/wiki/Stop_words)
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if(in_array($nterm, self::$stop_words)) continue;
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if(!isset($index[$nterm]))
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{
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$index[$nterm] = [ "freq" => 0, "offsets" => [] ];
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}
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$index[$nterm]["freq"]++;
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$index[$nterm]["offsets"][] = $i;
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$i++;
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}
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self::sort_index($index);
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return $index;
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}
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/*
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* @sumary Sorts an index alphabetically. This allows us to do a binary search instead of a regular sequential search.
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*/
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public static function sort_index(&$index)
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{
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ksort($index, SORT_NATURAL);
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}
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}
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class ids
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{
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/*
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* @summary Gets the page id associated with the given pagename.
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*/
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public static function get_page_id($pagename)
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{
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global $idindex;
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}
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/*
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* @summary Gets the page name associated with the given page id.
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*/
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public static function get_id_pagename($id)
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{
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global $idindex;
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}
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}
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?>
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