近年来,随着科学技术的不断发展,数字化设计成为机械设计与制造领域中不可缺少的环节,对整个机械制造行业发展有着重大的意义。现代航空航天汽车等机械制造行业逐渐引进了MBD(Model Based Definition)数字化技术。为了解决MBD模型信息...近年来,随着科学技术的不断发展,数字化设计成为机械设计与制造领域中不可缺少的环节,对整个机械制造行业发展有着重大的意义。现代航空航天汽车等机械制造行业逐渐引进了MBD(Model Based Definition)数字化技术。为了解决MBD模型信息的基准信息提取等问题,本文通过NX二次开发,并以NX的开发界面为支撑,开发了程序实现了自动导入零件,使MBD模型中基准信息可导出外部excel表中。避免手动输入造成的繁琐,缩短产品研发周期,降低生产成本,提高产品质量。展开更多
The major problem of the most current approaches of information models lies in that individual words provide unreliable evidence about the content of the texts. When the document is short, e.g. only the abstract is av...The major problem of the most current approaches of information models lies in that individual words provide unreliable evidence about the content of the texts. When the document is short, e.g. only the abstract is available, the word-use variability problem will have substantial impact on the Information Retrieval （IR） performance. To solve the problem, a new technology to short document retrieval named Reference Document Model （RDM） is put forward in this letter. RDM gets the statistical semantic of the query/document by pseudo feedback both for the query and document from reference documents. The contributions of this model are three-fold： （1） Pseudo feedback both for the query and the document; （2） Building the query model and the document model from reference documents; （3） Flexible indexing units, which can be ally linguistic elements such as documents, paragraphs, sentences, n-grams, term or character. For short document retrieval, RDM achieves significant improvements over the classical probabilistic models on the task of ad hoc retrieval on Text REtrieval Conference （TREC） test sets. Results also show that the shorter the document, the better the RDM performance.展开更多
According to the characteristics of the primary materials of the basic land price in the little town, the author uses the analysis function of the figures and the space to set off the rank unit,calculate the numberof ...According to the characteristics of the primary materials of the basic land price in the little town, the author uses the analysis function of the figures and the space to set off the rank unit,calculate the numberof the unit and rank the land. The method and the system of the evaluation of the basic land price in the little town (especially the little towns in the Western China) will be perfect.展开更多
文摘近年来,随着科学技术的不断发展,数字化设计成为机械设计与制造领域中不可缺少的环节,对整个机械制造行业发展有着重大的意义。现代航空航天汽车等机械制造行业逐渐引进了MBD(Model Based Definition)数字化技术。为了解决MBD模型信息的基准信息提取等问题,本文通过NX二次开发,并以NX的开发界面为支撑,开发了程序实现了自动导入零件,使MBD模型中基准信息可导出外部excel表中。避免手动输入造成的繁琐,缩短产品研发周期,降低生产成本,提高产品质量。
基金Supported by the Funds of Heilongjiang Outstanding Young Teacher (1151G037).
文摘The major problem of the most current approaches of information models lies in that individual words provide unreliable evidence about the content of the texts. When the document is short, e.g. only the abstract is available, the word-use variability problem will have substantial impact on the Information Retrieval （IR） performance. To solve the problem, a new technology to short document retrieval named Reference Document Model （RDM） is put forward in this letter. RDM gets the statistical semantic of the query/document by pseudo feedback both for the query and document from reference documents. The contributions of this model are three-fold： （1） Pseudo feedback both for the query and the document; （2） Building the query model and the document model from reference documents; （3） Flexible indexing units, which can be ally linguistic elements such as documents, paragraphs, sentences, n-grams, term or character. For short document retrieval, RDM achieves significant improvements over the classical probabilistic models on the task of ad hoc retrieval on Text REtrieval Conference （TREC） test sets. Results also show that the shorter the document, the better the RDM performance.
基金Part achievements ofkey projectofthe firstscience and research fund in Mianyang Normal University.
文摘According to the characteristics of the primary materials of the basic land price in the little town, the author uses the analysis function of the figures and the space to set off the rank unit,calculate the numberof the unit and rank the land. The method and the system of the evaluation of the basic land price in the little town (especially the little towns in the Western China) will be perfect.
