XML formats for LE XML-API

(Linguistic Engine eXtensible Markup Language Applications Programming Interface) This describes the XML formats for the API. These APIs are used an RPC (Remote Procedure Call) method over a TCP socket; that is, a client opens a connection to the LE, sends an XML-encoded expression and then listens for a response from the LE server. For now, the client's expressions are very simply a wrapper around a lisp s-expression.

Parse response

This is the format for the reponse from the server if it is returning a parse. It consists of :
  1. an agenda, sorted from left to right and from long to short length
  2. a chart, sorted from left to right and from long to short length

Here is the DTD :

<!ELEMENT parse (agenda,chart)>
<!ELEMENT agenda (span*)>
<!ELEMENT span (object*)>
<!ELEMENT object (feature*)>
<!ELEMENT feature (object*,#PCDATA)>
<!ATTLIST span left CDATA #REQUIRED>
<!ATTLIST span right CDATA #REQUIRED>
<!ATTLIST object name CDATA #REQUIRED>
<!ATTLIST feature name CDATA #REQUIRED>

Here is a sample of XML validated by this DTD:

<?xml version="1.0" encoding="us-ascii"?>
<!DOCTYPE parse SYSTEM "parse.dtd">
<parse>
  <agenda>
    <span left="0" right="1">
      <object name="hiro">
	<feature name="PHON">hiro</feature>
      </object>
    </span>
    <!-- note : overlap -->
    <span left="0" right="2">
      <object name="hiro sleeps">
	<feature name="PHON">hiro sleeps</feature>
      </object>
    </span>
    <span left="0" right="3">
    </span>
    <span left="1" right="2">
      <object name="sleeps">
	<feature name="PHON">sleeps</feature>
      </object>
    </span>
    <!-- note : overlap -->
    <span left="1" right="3">
      <object name="sleeps soundly">
	<feature name="PHON">sleeps soundly</feature>
      </object>
    </span>
    <span left="2" right="3">
      <object name="soundly">
	<feature name="PHON">soundly</feature>
      </object>
    </span>
  </agenda>
  <chart>
  </chart>
</parse>

Here is a stylesheet for displaying such documents as the above:

parse.xsl

Here is the resulting HTML for the above valid XML and the stylesheet :

parse.html
Eugene Koontz
Last modified: Fri May 10 19:25:38 PDT 2002