Profiling Engine SDK
Query Language Manual

Operator Reference

	Operator List
	Topical List

 

Query Language

	Introduction
	Summary
	Operators
	Tips, Questions, and Answers

 

Main Index

	Index
	Tutorial
	API Functions
	Query Language
	Technology Overview
	Contact Us

 

Other Products

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	Brevity Document Summarizer
	Lextek Document Profiler & Categorizer
	RouteX Document Routing Engine
	Lextek Language Identifier

This is the reference manual for all operators in the Lextek Profiling Engine query language. Each function is listed under a topic heading. Each operator has a reference page with a description of the operator, related operators and tips on its use. Operators may be listed under more than one topic.

 

Basic Operators Basic suit of operators provided in the language. Most other operators are variations of these. and or not xor near phrase before after ordered ordered_near Existential Operators Operators that always return a weight of 1 for all their hits. all any atleast atmost near phrase ordered ordered_near Fuzzy Logic Operators Operators that return either the minum weight or maximum weight of their terms and or xor max min Probabilistic Operators Operators that use probabilistic calculations to determine their resultant weight. value r_or r_and r_phrase r_near r_ordered r_ordered_near r_atleast r_atmost bayesian   P-norm Operators Operators that return weights using p-norm calculations. p_and p_or p_phrase p_near p_ordered p_ordered_near p_atleast p_atmost   MMM Operators Operators that return weights using mixed minimum and maximum calculations. m_and m_or Variable Distance Operators Operators that return weights based upon how close terms are. v_near v_ordered_near

And Operators Operators that require all terms to exist in a record, but in no particular order or proximity. and all r_and p_and m_and   Or Operators Operators that return hits if any of the terms exist in a record, but in no particular order or proximity. or any r_or p_or m_or atmost atleast r_atmost r_atleast p_atmost p_atleast Phrase Operators Operators that require the terms to exist as a phrase in a record. phrase r_phrase p_phrase Proximity Operators Operators that require the terms to exist with a certain number of words of each other. near r_near p_phrase v_near Ordered Near Operators Operators that require the terms to exist with a certain number of words of each other and in a specific order. ordered_near r_ordered_near p_ordered_near v_ordered_near Conditional Operators Operators that function like an "if-statement," returning specified terms if certain conditions are met. gate iif max min   Nomalization Operators Operators that modify all the weights of a term. normalize maxnormalize mynormalize complement