Chinese spoken language understanding in SHTQS

来源 :哈尔滨工业大学学报(英文版) | 被引量 : 0次 | 上传用户:a1470447
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Spoken dialogue systems are an active research field with wide applications. But the differences in the Chinese spoken dialogue system are not as distinct as that of English. In Chinese spoken dialogues, there are many language phenomena. Firstly, most utterances are ill-formed. Secondly, ellipsis, anaphora and negation are also widely used in Chinese spoken dialogue. Determining how to extract semantic information from incomplete sentences and resolve negation, anaphora and ellipsis is crucial. SHTQS ( Shanghai Transportation Query System) is an intelligent telephone-based spoken dialogue system providing information about the best route between any two sites in Shanghai. After a brief description of the system, the natural language processing is emphasized.Speech recognition sentences unavoidably contain errors. In language sequence processing procedures,these errors can be easily passed to the later parts and take on a ripple effect. To detect and recover these from errors as early as possible, language-processing strategies are specially considered. For errors resulting from divided words in speech recognition, segmentation and POS Tagging approaches that can rectify these errors are designed. Since most of the inquiry utterances are ill-formed and negation, anaphora and ellipsis are common language phenomena, the language understanding must be adequately adaptive. So, a partial syntactic parsing scheme is adopted and a chart algorithm is used. The parser is based on unification grammar. The semantic frame that extracts from the best arc set of the chart is used to represent the meaning of sentences. The negation, anaphora and ellipsis are also analyzed and corresponding processing approaches are presented. The accuracy of the language processing part is 88. 39% and the testing result shows that the language processing strategies are rational and effective.
其他文献
以将编辑过程中最核心的部分稿件评审、编辑加工和校对信息化从而提高科技期刊质量为目标,提出了多媒体编辑工程专家系统 MEEES(Multimedia Editorial Engineering Expert Sy
A new arithmetic using matrix left-shift functions for the quicker generation of curved and compound twills is introduced in this paper. A matrix model for the
研究了等静压诱导掺镧(La)的Pb(Zr,Sn,Ti)O3(PLZST)陶瓷材料的铁电-反铁电相变和介电压力谱, 以及温度对压致相变和介电压力谱的影响, 结果发现温度使铁电-反铁电相变压力降
The biotic branch nets are extreme high-tech product. In order to achieve a certain functional objective, they can adjust their growth direction and growth velo
The coil cooling and its role in a hot strip mill were reviewed.A mathematical model was developed to describe and analyze the thermal history and its impact on
通过对Levitus气候平均的海洋温度盐度资料分析,在认识南海混合层季节演变特征的基础上,探讨了南海温跃层的结构,揭示了南海北部冬季温跃层通风现象.分析表明,冬季南海北部温跃层的主要通
To improve the coefficient of performance (COP) of CO 2 transcritical reverse cycle and determine the most efficient cycle, comparison analysis on single- and t
In recent years China has seen speedy development of its ethylene industry. Compared to other advanced countries the per capita ethylene consumption in China is
After many years of development, die casting technology of metallic materials has been matured. In this paper,the lower-support and its injecting system were cr
对《石油勘探与开发》创刊30年所刊出的主要论文进行了综述,阐述该刊物的发展见证了中国石油工业勘探与开发领域近30年的发展、壮大历程。科技期刊在本行业中起到了反映科技
期刊