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Table 4

Other projection features selected; see the previously mentioned Web page25 for precise definitions.

POSParentPrjWordPerG2E Computes the span difference between all the parent constituents of POS tags in a German parse and their respective coverage in the corresponding English parse, measured using percentage coverage of the sentence in words. The feature value is the sum of all the differences. The projection direction is from German to English. 
AbovePOSPrjPer Projection direction is from English to German, and measured in percentage sentence coverage using characters, not words. The feature value is calculated over all constituents above the POS level in the English tree. 
AbovePOSPrjWord Calculates a length-based difference using words. 
POSPar2Prj Only applies when the POS tag's parent has two children (the POS tag has only one sibling). Projects from English to German and calculates a length-based difference in characters. 
POSPar2PrjPer Calculates a percentage-based difference based on characters. 
POSPar2PrjG2E Like POSPar2Prj except projects from German to English. 
POSPar2PrjWordG2E Like POSPar2PrjG2E except uses word-based differences. 
POSParentPrjWordPerG2E Computes the span difference between all the parent constituents of POS tags in a German parse and their respective coverage in the corresponding English parse, measured using percentage coverage of the sentence in words. The feature value is the sum of all the differences. The projection direction is from German to English. 
AbovePOSPrjPer Projection direction is from English to German, and measured in percentage sentence coverage using characters, not words. The feature value is calculated over all constituents above the POS level in the English tree. 
AbovePOSPrjWord Calculates a length-based difference using words. 
POSPar2Prj Only applies when the POS tag's parent has two children (the POS tag has only one sibling). Projects from English to German and calculates a length-based difference in characters. 
POSPar2PrjPer Calculates a percentage-based difference based on characters. 
POSPar2PrjG2E Like POSPar2Prj except projects from German to English. 
POSPar2PrjWordG2E Like POSPar2PrjG2E except uses word-based differences. 
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