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/*
IXWeightingDomain.h
Copyright 1991, NeXT Computer, Inc.
*/
#import <objc/Object.h>
#import <objc/hashtable.h>
@class IXAttributeParser, IXAttributeTable;
@interface IXWeightingDomain: Object
{
unsigned beenRanked; /* true when tokens have been ranked*/
unsigned totalTokens; /* the record of tokens in sample*/
unsigned uniqueTokens; /* record of unique tokens in sample*/
unsigned indexCount; /* record of entries in token index*/
unsigned totalLength; /* the sum of all the token lengths*/
void *tokenArray; /* "lexeme rank count lexeme rank count..."*/
unsigned *tokenIndex; /* array of offsets into token array*/
}
- initFromDomain:(NXStream *)stream; /* reads domain format*/
- writeDomain:(NXStream *)stream; /* write domain format*/
- initFromHistogram:(NXStream *)stream; /* reads histogram format*/
- writeHistogram:(NXStream *)stream; /* writes histogram format*/
- initFromWFTable:(NXStream *)stream; /* reads pre- 3.0 WFTable format*/
/* initializes the weighting domain from an attribute table.*/
- initFromAttributeTable:(IXAttributeTable *)theTable;
/* The following methods initialize the weighting domain from one of the */
/* attributes in the supplied attribute parser.*/
- initFromAttributeParser:(IXAttributeParser *)aParser; /* for "Default"*/
- initFromAttributeParser:(IXAttributeParser *)aParser
forAttributeNamed:(const char *)name;
- (unsigned)totalTokens; /* how many tokens were seen by parser*/
- (unsigned)uniqueTokens; /* how many unique tokens were found by parser*/
- (unsigned)countForToken:(void *)token /* how many times did token occur*/
ofLength:(unsigned)aLength;
- (unsigned)rankForToken:(void *)token /* rank token against the others*/
ofLength:(unsigned)aLength;
- (float)frequencyOfToken:(void *)token /* ratio token count to total count*/
ofLength:(unsigned)aLength;
- (float)peculiarityOfToken:(void *)token /* frequency relative to domain*/
ofLength:(unsigned)aLength andFrequency:(float)frequency;
/* The following methods provide for iterating over the tokens in the domain.*/
- (NXHashState)initHashState;
- (BOOL)nextHashState:(NXHashState *)aState
value:(const void **)aValue length:(unsigned *)aLength;
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.