imported>Martins at 13:46, 24 September 2012

2012-09-24T13:46:34Z

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The '''NL Memory''' constitutes a list of syntactic (subcategorization) frames between natural language words or terms that co-occur more often than would be expected by chance. They are used to represent collocations, i.e., partly or fully fixed expressions that become established through repeated context-dependent use.

The NL Memory may be provided in two different formats:
*Extended, in XML; or
*Simplified, as a set of [[Grammar_Specs#Disambiguation_Rules|network disambiguation rules]]

== Extended format ==

NL Memory entries in extended format must have the following structure:

<relation name="RNAME" frequency="RFREQ">
<source id="SID" attribute="ATT" lang="<LID>">SOURCE</source>
<target id="TID" attribute="ATT" lang="<LID>">TARGET</target>
</relation>

Where: 
RNAME is the name of a syntactic relation ("NA", "NC", "NS", etc); 
RFREQ is the frequency of the relation RNAME between the SOURCE and the TARGET in the corpus; 
SID is a number used to identify the SOURCE; 
TID is a number used to identify the TARGET; 
ATT is a set of attribute-value pairs that apply to the SOURCE or to the TARGET ("POS=NOU", "GEN=NEU", etc); 
SOURCE is the source node of the syntactic relation; 
TARGET is the target node of the syntactic relation; 
<LID> is the ISO 639-2 three-character code for the language.

=== XML Schema ===

<pre>
<?xml version="1.0" encoding="utf-16"?>
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" version="1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="nlm">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded" name="relation">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="source">
<xsd:complexType>
<xsd:attribute name="id" type="xsd:unsignedLong" use="required" />
<xsd:attribute name="attribute" type="xsd:string" use="optional" />
<xsd:attribute name="lang" type="xsd:string" use="optional" />
</xsd:complexType>
</xsd:element>
<xsd:element name="target">
<xsd:complexType>
<xsd:attribute name="id" type="xsd:unsignedLong" use="required"/>
<xsd:attribute name="attribute" type="xsd:string" use="optional" />
<xsd:attribute name="lang" type="xsd:string" use="optional"/>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
<xsd:attribute name="name" type="xsd:string" use="required"/>
<xsd:attribute name="frequency" type="xsd:int" use="optional"/>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
</pre>

== Simplified format ==

NL Memory entries in simplified format must have the structure of [[Grammar_Specs#Disambiguation_Rules|network disambiguation rules]], as follows:

RELATION(SOURCE;TARGET)=DC;

Where: 
RELATION is the name of a syntactic relation ("NA", "NC", "NS", etc.); 
SOURCE is the source node of the syntactic relation, and the corresponding attributes, if necessary; 
TARGET is the target node of the syntactic relation, and the corresponding attributes, if necessary; 
DC is the degree of certainty (i.e., the likelihood of the relation between the SOURCE and the TARGET), ranging from 0 (impossible) to 255 (necessary) 
The SOURCE and the TARGET nodes may be referred as:
*constants (i.e., specific natural language words), to be represented between square brackets, if lemmas, or between quotes, if strings: <nowiki>[United States]</nowiki> and "United States"
*a feature (attribute, value, or attribute-value pair) or set of features of a group of natural language: LEX=NOU, GEN=MCL, etc.

=== Examples ===

NS(<nowiki>[United States]</nowiki>;<nowiki>[the]</nowiki>)=1; (The lemma <nowiki>[United States]</nowiki> requires the specifier <nowiki>[the]</nowiki>)

NL Memory - Revision history

imported>Martins at 13:46, 24 September 2012