general.drl

#created on: Jul 30, 2010
package edu.isi.bmkeg.pdf.classification.rules

#list any import classes here.

import edu.isi.bmkeg.lapdf.features.ChunkFeatures;
import edu.isi.bmkeg.lapdf.model.ChunkBlock;

#declare any global variables here

global ChunkBlock    chunk;

rule "Title"
	activation-group "blockClassification"
	salience 4
	when
		    ChunkFeatures(pageNumber==1)
		    ChunkFeatures(heightDifferenceBetweenChunkWordAndDocumentWord>8)	  
		    ChunkFeatures(alignedMiddle==true)
	then 
		chunk.setType(chunk.TYPE_TITLE);
end

rule "body"
	activation-group "blockClassification"
	salience 4
	when
		    ChunkFeatures(mostPopularFontInDocument==true)
		    ChunkFeatures(alignedWithColumnBoundaries==true)
	then 
		chunk.setType(chunk.TYPE_BODY);
end

rule "body2"
	activation-group "blockClassification"
	salience 4
	when
		    ChunkFeatures(nextMostPopularFontInDocument==true)
		    ChunkFeatures(alignedWithColumnBoundaries==true)
	then 
		chunk.setType(chunk.TYPE_BODY);
end

rule "heading"
	activation-group "blockClassification"
	salience 3
	when
		    ChunkFeatures(withinBodyTextFrame==true)
			ChunkFeatures(alignedWithColumnBoundaries==true)
		    eval(chunk.readNumberOfLine()<=3)
	then 
		chunk.setType(chunk.TYPE_HEADING);
end

rule "figure-legend"
	activation-group "blockClassification"
	salience 4
	when
		    ChunkFeatures(mostPopularFontInDocument==false)
		    eval(chunk.isMatchingRegularExpression("^(Figure \\d+|FIGURE \\d+)")==true)
	then 
		chunk.setType(chunk.TYPE_FIGURE_LEGEND);
end

rule "figure-legend2"
	activation-group "blockClassification"
	salience 4
	when
		    eval(chunk.isUnderOneLineFlushNeighboursOfType(chunk.TYPE_FIGURE_LEGEND)==true)
	then 
		chunk.setType(chunk.TYPE_HEADING);
end

rule "Header"
activation-group "blockClassification"
salience 4
	when
			eval(chunk.readNumberOfLine()==1)
		 ChunkFeatures(containingFirstLineOfPage==true)
	then
		 chunk.setType(chunk.TYPE_HEADER);
end

rule "Footer"
activation-group "blockClassification"
salience 4
	when
	    	
	    	eval(chunk.readNumberOfLine()==1)
	    	ChunkFeatures(containingLastLineOfPage==true)
		
	then
			chunk.setType(chunk.TYPE_FOOTER);
end