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Stanford Parser processes raw text in English, Chinese, German, Arabic, and French, and extracts constituency parse trees.
package edu.stanford.nlp.trees;
import edu.stanford.nlp.util.StringUtils;
import java.util.regex.Pattern;
/** This class contains some English String or Tregex regular expression
* patterns. They originated in other classes like
* EnglishGrammaticalRelations, but were collected here so that they
* could be used without having to load large classes (which we might want
* to have parallel versions of.
* Some are just stored here as String objects, since they are often used as
* sub-patterns inside larger patterns.
*
* @author Christopher Manning
*/
public class EnglishPatterns {
public static final String[] copularVerbs = {
"be", "being", "been", "am", "are", "r", "is", "ai", "was", "were", "'m", "m", "'re", "'s", "s", "`s", "art", "ar", "wase"};
public static final String[] beGetVerbs = {
"be", "being", "been", "am", "are", "r", "is", "ai", "was", "were", "'m", "m", "'re", "'s", "s", "`s", "art", "ar", "wase",
"get", "getting", "gets", "got", "gotten" };
public static final String timeWordRegex =
"/^(?i:Mondays?|Tuesdays?|Wednesdays?|Thursdays?|Fridays?|Saturdays?|Sundays?|years?|months?|weeks?|days?|mornings?|evenings?|nights?|January|Jan\\.|February|Feb\\.|March|Mar\\.|April|Apr\\.|May|June|July|August|Aug\\.|September|Sept\\.|October|Oct\\.|November|Nov\\.|December|Dec\\.|today|yesterday|tomorrow|spring|summer|fall|autumn|winter)$/";
public static final String timeWordLotRegex =
"/^(?i:Mondays?|Tuesdays?|Wednesdays?|Thursdays?|Fridays?|Saturdays?|Sundays?|years?|months?|weeks?|days?|mornings?|evenings?|nights?|January|Jan\\.|February|Feb\\.|March|Mar\\.|April|Apr\\.|May|June|July|August|Aug\\.|September|Sept\\.|October|Oct\\.|November|Nov\\.|December|Dec\\.|today|yesterday|tomorrow|spring|summer|fall|autumn|winter|lot)$/";
public static final String copularWordRegex =
"/^(?i:" + StringUtils.join(copularVerbs, "|") + ")$/";
public static final String clausalComplementRegex =
"/^(?i:seem|seems|seemed|seeming|resemble|resembles|resembled|resembling|become|becomes|became|becoming|remain|remains|remained|remaining)$/";
// r is for texting r = are
public static final String passiveAuxWordRegex =
"/^(?i:" +StringUtils.join(beGetVerbs, "|") + ")$/";
public static final String beAuxiliaryRegex =
"/^(?i:am|is|are|r|be|being|'s|'re|'m|was|were|been|s|ai|m|art|ar|wase)$/";
public static final String haveRegex =
"/^(?i:have|had|has|having|'ve|ve|v|'d|d|hvae|hav|as)$/";
// private static final String stopKeepRegex = "/^(?i:stop|stops|stopped|stopping|keep|keeps|kept|keeping)$/";
public static final String selfRegex =
"/^(?i:myself|yourself|himself|herself|itself|ourselves|yourselves|themselves)$/";
public static final String xcompVerbRegex =
"/^(?i:advise|advises|advised|advising|allow|allows|allowed|allowing|ask|asks|asked|asking|beg|begs|begged|begging|convice|convinces|convinced|convincing|demand|demands|demanded|demanding|desire|desires|desired|desiring|expect|expects|expected|expecting|encourage|encourages|encouraged|encouraging|force|forces|forced|forcing|implore|implores|implored|imploring|lobby|lobbies|lobbied|lobbying|order|orders|ordered|ordering|persuade|persuades|persuaded|persuading|pressure|pressures|pressured|pressuring|prompt|prompts|prompted|prompting|require|requires|required|requiring|tell|tells|told|telling|urge|urges|urged|urging)$/";
// A list of verbs with an xcomp as an argument
// which don't require a NP before the xcomp.
public static final String xcompNoObjVerbRegex =
"/^(?i:advis|afford|allow|am$|appear|are$|ask|attempt|avoid|be$|bec[oa]m|beg[ia]n|believ|call|caus[ei]|ceas[ei]|choos[ei]|chose|claim|consider|continu|convinc|decid|decline|end|enjoy|expect|feel|felt|find|forb[ia]d|forc[ei]|forg[eo]t|found|going|gon|g[eo]t|happen|hat[ei]|ha[vds]|help|hesitat|hop[ei]|intend|instruct|invit|['i]s$|keep|kept|learn|leav[ei]|left|let|lik[ei]|look|lov[ei]|made|mak[ei]|manag|nam[ei]|need|offer|order|plan|pretend|proceed|promis|prov[ei]|rate|recommend|refus|regret|remember|requir|sa[iy]|seem|sound|start|stop|suggest|suppos|tell|tend|threaten|told|tr[yi]|turn|used|wan|was$|willing|wish)/";
// A list of verbs where the answer to a question involving that
// verb would be a ccomp. For example, "I know when the train is
// arriving." What does the person know?
public static final String ccompVerbRegex =
"/^(?i:ask|asks|asked|asking|know|knows|knew|knowing|specify|specifies|specified|specifying|tell|tells|told|telling|understand|understands|understood|understanding|wonder|wonders|wondered|wondering)$/";
// A subset of ccompVerbRegex where you could expect an object and
// still have a ccomp. For example, "They told me when ..." can
// still have a ccomp. "They know my order when ..." would not
// expect a ccomp between "know" and the head of "when ..."
public static final String ccompObjVerbRegex =
"/^(?i:tell|tells|told|telling)$/";
// TODO: is there some better pattern to look for? We do not have tag information at this point
public static final String RELATIVIZING_WORD_REGEX = "(?i:that|what|which|who|whom|whose)";
public static final Pattern RELATIVIZING_WORD_PATTERN = Pattern.compile(RELATIVIZING_WORD_REGEX);
// Lemmata of verbs witht the argument structure NP V S-INF.
// Extracted from VerbNet 3.2.
public static final String NP_V_S_INF_VERBS_REGEX = "(?i:acquiesce|submit|bow|defer|accede|succumb|yield|capitulate|despise|disdain|dislike|regret|like|love|enjoy|fear|hate|pledge|proceed|begin|start|commence|recommence|resume|undertake|ally|collaborate|collude|conspire|discriminate|legislate|partner|protest|rebel|retaliate|scheme|sin|befriend|continue|broadcast|cable|e-mail|fax|modem|netmail|phone|radio|relay|satellite|semaphore|sign|signal|telecast|telegraph|telephone|telex|wire|wireless|ache|crave|fall|hanker|hope|hunger|itch|long|lust|pine|pray|thirst|wish|yearn|dangle|hanker|lust|thirst|yearn|babble|bark|bawl|bellow|bleat|blubber|boom|bray|burble|bluster|cackle|call|carol|chant|chatter|chirp|chortle|chuckle|cluck|coo|croak|croon|crow|cry|drawl|drone|gabble|gasp|gibber|groan|growl|grumble|grunt|hiss|holler|hoot|howl|jabber|keen|lilt|lisp|mewl|moan|mumble|murmur|mutter|nasal|natter|pant|prattle|purr|quaver|rage|rant|rasp|roar|rumble|scream|screech|shout|shriek|sibilate|simper|sigh|sing|smatter|smile|snap|snarl|snivel|snuffle|splutter|squall|squawk|squeak|squeal|stammer|stemmer|stutter|thunder|tisk|trill|trumpet|twang|twitter|vociferate|wail|warble|wheeze|whimper|whine|whisper|whistle|witter|whoop|yammer|yap|yell|yelp|yodel|blare|gurgle|hum|neglect|fail|forego|forgo|flub|overleap|manage|omit|seem|appear|prove|manage|fail|flub|try|attempt|intend|enjoy|expect|wish|hope|intend|mean|plan|propose|think|aim|dream|imagine|yen)";
private EnglishPatterns() {} // static constants
}