forked from GitHub/gf-core
196 lines
6.8 KiB
HTML
196 lines
6.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML>
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<HEAD>
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<META NAME="generator" CONTENT="http://txt2tags.sf.net">
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<TITLE> Cat: the Category System</TITLE>
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</HEAD><BODY BGCOLOR="white" TEXT="black">
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<P ALIGN="center"><CENTER><H1> Cat: the Category System</H1>
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<FONT SIZE="4">
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<I>Last update: 2007-07-06 11:21:49 CEST</I><BR>
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</FONT></CENTER>
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<P></P>
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<HR NOSHADE SIZE=1>
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<P></P>
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<UL>
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<LI><A HREF="#toc1">Sentences and clauses</A>
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<LI><A HREF="#toc2">Questions and interrogatives</A>
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<LI><A HREF="#toc3">Relative clauses and pronouns</A>
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<LI><A HREF="#toc4">Verb phrases</A>
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<LI><A HREF="#toc5">Adjectival phrases</A>
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<LI><A HREF="#toc6">Nouns and noun phrases</A>
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<LI><A HREF="#toc7">Numerals</A>
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<LI><A HREF="#toc8">Structural words</A>
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<LI><A HREF="#toc9">Words of open classes</A>
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</UL>
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<P></P>
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<HR NOSHADE SIZE=1>
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<P></P>
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<P>
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Produced by
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gfdoc - a rudimentary GF document generator.
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(c) Aarne Ranta (<A HREF="mailto:aarne@cs.chalmers.se">aarne@cs.chalmers.se</A>) 2002 under GNU GPL.
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</P>
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<P>
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The category system is central to the library in the sense
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that the other modules (<CODE>Adjective</CODE>, <CODE>Adverb</CODE>, <CODE>Noun</CODE>, <CODE>Verb</CODE> etc)
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communicate through it. This means that a e.g. a function using
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<CODE>NP</CODE>s in <CODE>Verb</CODE> need not know how <CODE>NP</CODE>s are constructed in <CODE>Noun</CODE>:
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it is enough that both <CODE>Verb</CODE> and <CODE>Noun</CODE> use the same type <CODE>NP</CODE>,
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which is given here in <CODE>Cat</CODE>.
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</P>
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<P>
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Some categories are inherited from <A HREF="Common.html"><CODE>Common</CODE></A>.
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The reason they are defined there is that they have the same
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implementation in all languages in the resource (typically,
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just a string). These categories are
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<CODE>AdA, AdN, AdV, Adv, Ant, CAdv, IAdv, PConj, Phr</CODE>,
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<CODE>Pol, SC, Tense, Text, Utt, Voc</CODE>.
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</P>
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<P>
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Moreover, the list categories <CODE>ListAdv, ListAP, ListNP, ListS</CODE>
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are defined on <CODE>Conjunction</CODE> and only used locally there.
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</P>
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<PRE>
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abstract Cat = Common ** {
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cat
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</PRE>
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<P></P>
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<A NAME="toc1"></A>
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<H2>Sentences and clauses</H2>
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<P>
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Constructed in <A HREF="Sentence.html">Sentence</A>, and also in
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<A HREF="Idiom.html">Idiom</A>.
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</P>
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<PRE>
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S ; -- declarative sentence e.g. "she lived here"
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QS ; -- question e.g. "where did she live"
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RS ; -- relative e.g. "in which she lived"
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Cl ; -- declarative clause, with all tenses e.g. "she looks at this"
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Slash ; -- clause missing NP (S/NP in GPSG) e.g. "she looks at"
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Imp ; -- imperative e.g. "look at this"
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</PRE>
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<P></P>
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<A NAME="toc2"></A>
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<H2>Questions and interrogatives</H2>
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<P>
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Constructed in <A HREF="Question.html">Question</A>.
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</P>
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<PRE>
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QCl ; -- question clause, with all tenses e.g. "why does she walk"
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IP ; -- interrogative pronoun e.g. "who"
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IComp ; -- interrogative complement of copula e.g. "where"
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IDet ; -- interrogative determiner e.g. "which"
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</PRE>
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<P></P>
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<A NAME="toc3"></A>
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<H2>Relative clauses and pronouns</H2>
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<P>
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Constructed in <A HREF="Relative.html">Relative</A>.
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</P>
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<PRE>
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RCl ; -- relative clause, with all tenses e.g. "in which she lives"
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RP ; -- relative pronoun e.g. "in which"
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</PRE>
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<P></P>
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<A NAME="toc4"></A>
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<H2>Verb phrases</H2>
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<P>
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Constructed in <A HREF="Verb.html">Verb</A>.
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</P>
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<PRE>
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VP ; -- verb phrase e.g. "is very warm"
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Comp ; -- complement of copula, such as AP e.g. "very warm"
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</PRE>
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<P></P>
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<A NAME="toc5"></A>
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<H2>Adjectival phrases</H2>
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<P>
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Constructed in <A HREF="Adjective.html">Adjective</A>.
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</P>
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<PRE>
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AP ; -- adjectival phrase e.g. "very warm"
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</PRE>
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<P></P>
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<A NAME="toc6"></A>
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<H2>Nouns and noun phrases</H2>
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<P>
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Constructed in <A HREF="Noun.html">Noun</A>.
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Many atomic noun phrases e.g. <I>everybody</I>
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are constructed in <A HREF="Structural.html">Structural</A>.
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The determiner structure is
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</P>
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<PRE>
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Predet (QuantSg | QuantPl Num) Ord
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</PRE>
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<P>
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as defined in <A HREF="Noun.html">Noun</A>.
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</P>
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<PRE>
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CN ; -- common noun (without determiner) e.g. "red house"
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NP ; -- noun phrase (subject or object) e.g. "the red house"
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Pron ; -- personal pronoun e.g. "she"
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Det ; -- determiner phrase e.g. "those seven"
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Predet ; -- predeterminer (prefixed Quant) e.g. "all"
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QuantSg ;-- quantifier ('nucleus' of sing. Det) e.g. "every"
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QuantPl ;-- quantifier ('nucleus' of plur. Det) e.g. "many"
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Quant ; -- quantifier with both sg and pl e.g. "this/these"
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Num ; -- cardinal number (used with QuantPl) e.g. "seven"
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Ord ; -- ordinal number (used in Det) e.g. "seventh"
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</PRE>
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<P></P>
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<A NAME="toc7"></A>
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<H2>Numerals</H2>
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<P>
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Constructed in <A HREF="Numeral.html">Numeral</A>.
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</P>
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<PRE>
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Numeral;-- cardinal or ordinal, e.g. "five/fifth"
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</PRE>
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<P></P>
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<A NAME="toc8"></A>
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<H2>Structural words</H2>
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<P>
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Constructed in <A HREF="Structural.html">Structural</A>.
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</P>
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<PRE>
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Conj ; -- conjunction, e.g. "and"
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DConj ; -- distributed conj. e.g. "both - and"
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Subj ; -- subjunction, e.g. "if"
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Prep ; -- preposition, or just case e.g. "in"
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</PRE>
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<P></P>
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<A NAME="toc9"></A>
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<H2>Words of open classes</H2>
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<P>
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These are constructed in <A HREF="Lexicon.html">Lexicon</A> and in
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additional lexicon modules.
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</P>
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<PRE>
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V ; -- one-place verb e.g. "sleep"
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V2 ; -- two-place verb e.g. "love"
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V3 ; -- three-place verb e.g. "show"
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VV ; -- verb-phrase-complement verb e.g. "want"
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VS ; -- sentence-complement verb e.g. "claim"
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VQ ; -- question-complement verb e.g. "ask"
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VA ; -- adjective-complement verb e.g. "look"
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V2A ; -- verb with NP and AP complement e.g. "paint"
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A ; -- one-place adjective e.g. "warm"
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A2 ; -- two-place adjective e.g. "divisible"
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N ; -- common noun e.g. "house"
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N2 ; -- relational noun e.g. "son"
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N3 ; -- three-place relational noun e.g. "connection"
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PN ; -- proper name e.g. "Paris"
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}
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</PRE>
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<P></P>
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<!-- html code generated by txt2tags 2.3 (http://txt2tags.sf.net) -->
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<!-- cmdline: txt2tags -thtml -\-toc abstract/Cat.txt -->
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