中文摘要：

针对服装类商品标题中的商品属性实体识别问题,提出了一种边界探测规则与条件随机场（CRF）相结合的混合方法。首先,使用统计方法挖掘隐蔽的实体提示字信息;然后,以字为粒度对三种统计成词指标及其内涵进行了阐释;接着,基于统计成词指标和提示字信息设计了实体边界探测规则;最后,基于经验风险最小化给出了规则中阈值的确定方法。在与字标注的CRF模型的对比实验中,总体准确率、召回率、F1值分别提升了1.61%、2.54%和2.08%,验证了对于实体边界探测规则的有效性。所提方法可用于电子商务信息检索（IR）、电子商务信息抽取（IE）、查询意图识别等任务。

英文摘要：

For the entity recognition of commodity attributes in clothing commodity tide, a hybrid method combining Conditional Random Field （CRF） with entity boundary detecting rules was proposed. Firstly, the hidden entity hint character messages were obtained through a statistical method; secondly, statistical word indicators and their implications were interpreted with a granularity of character; thirdly, entity boundary detecting rules was proposed based on the entity hint characters and statistical word indicators; finally, a method for identifying threshold values in rules was proposed based on empirical risk minimization. In the comparison experiments with character-based CRF models, the overall precision, recall and F1 score were increased by 1.61%, 2.54% and 2.08% respectively, which validated the efficiency of the entity boundary detecting rule. The proposed method can be used in e-commerce Information Retrieval （IR）, e-commerce Information Extraction （IE） and query intention identification, etc.