Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package hrpod.tools.nlp; import java.util.ArrayList; import java.util.Arrays; import org.apache.commons.lang3.StringUtils; import org.apache.log4j.Logger; /** * * @author admin */ public class StopWordRemoval { final static Logger logger = Logger.getLogger(StopWordRemoval.class); static String[] stopWords = { "a", "a's", "able", "about", "above", "according", "accordingly", "across", "actually", "after", "afterwards", "again", "against", "ain't", "all", "allow", "allows", "almost", "alone", "along", "already", "also", "although", "always", "am", "among", "amongst", "an", "and", "another", "any", "anybody", "anyhow", "anyone", "anything", "anyway", "anyways", "anywhere", "apart", "appear", "appreciate", "appropriate", "are", "aren't", "around", "as", "aside", "ask", "asking", "associated", "at", "available", "away", "awfully", "b", "be", "became", "because", "become", "becomes", "becoming", "been", "before", "beforehand", "behind", "being", "believe", "below", "beside", "besides", "best", "better", "between", "beyond", "both", "brief", "but", "by", "c", "c'mon", "c's", "came", "can", "can't", "cannot", "cant", "cause", "causes", "certain", "certainly", "changes", "clearly", "co", "com", "come", "comes", "concerning", "consequently", "consider", "considering", "contain", "containing", "contains", "corresponding", "could", "couldn't", "course", "currently", "d", "definitely", "described", "despite", "did", "didn't", "different", "do", "does", "doesn't", "doing", "don't", "done", "down", "downwards", "during", "e", "each", "edu", "eg", "eight", "either", "else", "elsewhere", "enough", "entirely", "especially", "et", "etc", "even", "ever", "every", "everybody", "everyone", "everything", "everywhere", "ex", "exactly", "example", "except", "f", "far", "few", "fifth", "first", "five", "followed", "following", "follows", "for", "former", "formerly", "forth", "four", "from", "further", "furthermore", "g", "get", "gets", "getting", "given", "gives", "go", "goes", "going", "gone", "got", "gotten", "greetings", "h", "had", "hadn't", "happens", "hardly", "has", "hasn't", "have", "haven't", "having", "he", "he's", "hello", "help", "hence", "her", "here", "here's", "hereafter", "hereby", "herein", "hereupon", "hers", "herself", "hi", "him", "himself", "his", "hither", "hopefully", "how", "howbeit", "however", "i", "i'd", "i'll", "i'm", "i've", "ie", "if", "ignored", "immediate", "in", "inasmuch", "inc", "indeed", "indicate", "indicated", "indicates", "inner", "insofar", "instead", "into", "inward", "is", "isn't", "it", "it'd", "it'll", "it's", "its", "itself", "j", "just", "k", "keep", "keeps", "kept", "know", "knows", "known", "l", "last", "lately", "later", "latter", "latterly", "least", "less", "lest", "let", "let's", "like", "liked", "likely", "little", "look", "looking", "looks", "ltd", "m", "mainly", "many", "may", "maybe", "me", "mean", "meanwhile", "merely", "might", "more", "moreover", "most", "mostly", "much", "must", "my", "myself", "n", "name", "namely", "nd", "near", "nearly", "necessary", "need", "needs", "neither", "never", "nevertheless", "new", "next", "nine", "no", "nobody", "non", "none", "noone", "nor", "normally", "not", "nothing", "novel", "now", "nowhere", "o", "obviously", "of", "off", "often", "oh", "ok", "okay", "old", "on", "once", "one", "ones", "only", "onto", "or", "other", "others", "otherwise", "ought", "our", "ours", "ourselves", "out", "outside", "over", "overall", "own", "p", "particular", "particularly", "per", "perhaps", "placed", "please", "plus", "possible", "presumably", "probably", "provides", "q", "que", "quite", "qv", "r", "rather", "rd", "re", "really", "reasonably", "regarding", "regardless", "regards", "relatively", "respectively", "right", "s", "said", "same", "saw", "say", "saying", "says", "second", "secondly", "see", "seeing", "seem", "seemed", "seeming", "seems", "seen", "self", "selves", "sensible", "sent", "serious", "seriously", "seven", "several", "shall", "she", "should", "shouldn't", "since", "six", "so", "some", "somebody", "somehow", "someone", "something", "sometime", "sometimes", "somewhat", "somewhere", "soon", "sorry", "specified", "specify", "specifying", "still", "sub", "such", "sup", "sure", "t", "t's", "take", "taken", "tell", "tends", "th", "than", "thank", "thanks", "thanx", "that", "that's", "thats", "the", "their", "theirs", "them", "themselves", "then", "thence", "there", "there's", "thereafter", "thereby", "therefore", "therein", "theres", "thereupon", "these", "they", "they'd", "they'll", "they're", "they've", "think", "third", "this", "thorough", "thoroughly", "those", "though", "three", "through", "throughout", "thru", "thus", "to", "together", "too", "took", "toward", "towards", "tried", "tries", "truly", "try", "trying", "twice", "two", "u", "un", "under", "unfortunately", "unless", "unlikely", "until", "unto", "up", "upon", "us", "use", "used", "useful", "uses", "using", "usually", "uucp", "v", "value", "various", "very", "via", "viz", "vs", "w", "want", "wants", "was", "wasn't", "way", "we", "we'd", "we'll", "we're", "we've", "welcome", "well", "went", "were", "weren't", "what", "what's", "whatever", "when", "whence", "whenever", "where", "where's", "whereafter", "whereas", "whereby", "wherein", "whereupon", "wherever", "whether", "which", "while", "whither", "who", "who's", "whoever", "whole", "whom", "whose", "why", "will", "willing", "wish", "with", "within", "without", "won't", "wonder", "would", "wouldn't", "x", "y", "yes", "yet", "you", "you'd", "you'll", "you're", "you've", "your", "yours", "yourself", "yourselves", "z", "zero", "albeit", "author", "av", "canst", "cf", "cfrd", "choose", "conducted", "considered", "contrariwise", "cos", "crd", "cu", "day", "describes", "designed", "determine", "determined", "discussed", "dost", "doth", "double", "dual", "due", "excepted", "excepting", "exception", "exclude", "excluding", "exclusive", "farther", "farthest", "ff", "forward", "found", "front", "furthest", "general", "halves", "hast", "hath", "henceforth", "hereabouts", "hereto", "hindmost", "hitherto", "howsoever", "I", "include", "included", "including", "indoors", "inside", "insomuch", "investigated", "inwards", "kind", "kg", "km", "made", "meantime", "mr", "mrs", "ms", "nonetheless", "nope", "notwithstandi", "ng", "nowadays", "obtained", "performance", "performed", "plenty", "present", "presented", "presents", "provide", "provided", "related", "report", "required", "results", "round", "sake", "sang", "save", "seldom", "selected", "sfrd", "shalt", "shown", "sideways", "significant", "slept", "slew", "slung", "slunk", "smote", "spake", "spat", "spoke", "spoken", "sprang", "sprung", "srd", "stave", "staves", "studies", "supposing", "tested", "thee", "thenceforth", "thereabout", "thereabouts", "thereof", "thereon", "thereto", "thou", "thrice", "thy", "thyself", "till", "types", "unable", "underneath", "unlike", "upward", "upwards", "week", "whatsoever", "whensoever", "whereabouts", "whereat", "wherefore", "wherefrom", "whereinto", "whereof", "whereon", "wheresoever", "whereto", "whereunto", "wherewith", "whew", "whichever", "whichsoevr", "whilst", "whoa", "whomever", "whomsoever", "whosoever", "wilt", "worse", "worst", "wow", "ye", "year", "yippee", //Also include puntuation ",", ";", ".", ":", "_", "{", "}", "[", "]", "+", "*", "", "", "?", "=", ")", "(", "/", "&", "%", "$", "" }; StopWordRemoval() { } public ArrayList<String> removeStopWords(String[] words) { String newText = null; ArrayList<String> wordList = new ArrayList(); wordList.addAll(Arrays.asList(words)); //find stop/common words and remove them for (int w = 0; w < wordList.size(); w++) { String word = wordList.get(w); //break phrases down into individaul words ArrayList<String> subWordList = new ArrayList(); subWordList.addAll(Arrays.asList(wordList.get(w).split(" "))); //remove the stop words for (int swl = 0; swl < subWordList.size(); swl++) { for (int sw = 0; sw < stopWords.length; sw++) { String stopWord = stopWords[sw]; if (stopWords[sw].toLowerCase().contains(subWordList.get(swl).toLowerCase())) { //logger.info("REMOVE WORD: " + stopWords[sw]); subWordList.remove(swl); swl--; break; } } } wordList.set(w, StringUtils.join(subWordList, " ")); if (wordList.get(w).trim().equals("")) { wordList.remove(w); w--; } } //newText = StringUtils.join(wordList, " "); return wordList; } }