Syntax evaluation refers to the systematic assessment of syntactic structure or grammatical well-formedness in linguistic expressions. In theoretical linguistics, it involves examining whether sentences conform to the syntactic rules and constraints specified by a particular grammatical framework, including constituent structure, word order, agreement, and dependency relations ^[1][2]. In natural language processing, syntax evaluation also refers to measuring the performance of computational systems that analyze or generate syntactic structures, often by comparing predicted structures against reference annotations using task-specific evaluation metrics ^[3]. Depending on the research objective, evaluation may focus on grammatical acceptability, structural accuracy, or the correspondence between an analyzed sentence and an established syntactic representation ^[1][2][3].