连铸实训教学系统的设计与开发

针对教育部提出高校要强化实践教学要求,我们设计与研制了连铸模拟冷态实训装置,用于钢铁冶金专业的实践教学。控制模式包括远程自动控制、远程手动控制和就地手动控制三种模式。连铸模拟冷态实训装置的开发,可实现教学内容形象化、时空化,拉近课堂与实践的距离。该装置已经投入使用,系统运行稳定,获得了较好的实训效果。     

汉语小句简论

汉语小句可充当谓语以外的各种句法成分,汉语小句同英语类西方语言中关系化不可同日而语;汉语中不存在关系化现象,也没有论元饱和化要求;西语中若干类型从句可归并入汉语定语位置小句;定语位置小句与普通定语无二,中心语同定语小句间连接词多样化:助词"的",指示词,量词,数词;连接词分工有二:定语/中心语标记功能。     

Pronounce differently,mean differently: A multi-tagging-scheme learning method for Chinese NER integrated with lexicon and phonetic features

Named Entity Recognition (NER) aims to automatically extract specific entities from the unstructured text. Compared with performing NER in English, Chinese NER is more challenging in recognizing entity boundaries because there are no explicit delimiters between Chinese characters. However, most previous researches focused on the semantic information of the Chinese language on the character level but ignored the importance of the phonetic characteristics. To address these issues, we integrated phonetic features of Chinese characters with the lexicon information to help disambiguate the entity boundary recognition by fully exploring the potential of Chinese as a pictophonetic language. In addition, a novel multi-tagging-scheme learning method was proposed, based on the multi-task learning paradigm, to alleviate the data sparsity and error propagation problems that occurred in the previous tagging schemes, by separately annotating the segmentation information of entities and their corresponding entity types. Extensive experiments performed on four Chinese NER benchmark datasets: OntoNotes4.0, MSRA, Resume, and Weibo, show that our proposed method consistently outperforms the existing state-of-the-art baseline models. The ablation experiments further demonstrated that the introduction of the phonetic feature and the multi-tagging-scheme has a significant positive effect on the improvement of the Chinese NER task.