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This paper presents a syntactic recognition approach for on-line drawn graphical symbols. The proposed method consists in an incremental on-line predictive parser based on symbol descriptions by an adjacency grammar. The parser analyzes input strokes as they are drawn by the user and is able to get ahead which symbols are likely to be recognized when a partial subshape is drawn in an intermediate state. In addition, the parser takes into account two issues. First, symbol strokes are drawn indoi:10.1109/icdar.2007.4378750 dblp:conf/icdar/MasSLL07 fatcat:jng4xwrj2jf7volx5v7vxegdle