融合C4.5与SVM算法的汉语句义类型识别方法

Chinese Sentential Semantic Type Recognition Based on C4.5 Decision Tree and SVM Algorithm

选择50个词法和句法特征,进行了大量特征筛选实验,并基于筛选后的特征组合提出了一种融合C4.5和SVM的句义类型识别方法.该方法充分利用C4.5对多重句义的高精度识别和SVM对简单句义、复杂句义的高精度识别的特点,将C4.5与SVM分别识别的结果进行融合处理.给出最终的句义类型识别结果.识别结果表明,在BFS-CTC汉语标注语料库中,选取了4 500个句子,经十折交叉验证,句义类型的识别准确率达到92.1%.

50 lexical and syntax features were chosen to implement selecting experiments of twofeature combinations. Based on those feature combinations, a Chinese sentential semantic recognition method combining C4.5 （decision tree） and SVM was proposed. The method makes full use of the features of high precision of multiple by C4.5 as well as high precision of single and complex by SVM. The final recognition results are determined by synthetic blend of recognition results from C4.5 and SVM, respectively. The experimental data contains 4 500 sentences chosen from Beijing Forest Studio-Chinese Tag Corpus （BFS-CTC）. Through ten-fold cross verification, it is concluded that the accuracy rate of proposed method for recognizing sentential semantic type is 92.1 %.