In search of a missing link

Knowledge Management Research & Practice - A variety of indicators suggest that knowledge management (KM), as a field of study and practice, is here to stay. Although still in a formative...     

In vitro evaluation of a program for machine-aided indexing

This article presents the human evaluation of ILIAD, a program for machine-aided indexing (MAI). It consists of two language engineering modules and is designed to assist expert librarians in computer-aided indexing and document analysis. Our aim is the expert evaluation of automatic multi-word term indexing. Evaluation is performed by documentary engineers. Cataloging and indexing are their principal tasks. They also have a good scientific knowledge of the domain to which the indexed documents belong.We first present the ILIAD program and the two systems submitted to this evaluation, the methodology (protocol) adopted, the differences between the protocol and the implementation, and the results of these evaluations. Human evaluation is divided into three parts: firstly the evaluation of controlled indexing, then free indexing and finally term variant extraction performed during controlled indexing. Finally, we analyze the relevance of this evaluation by calculating the agreement frequency and the Kappa coefficient and propose some future developments.     

In a spin: the mysterious dancing epidemic of 1518

In 1518, one of the strangest epidemics in recorded history struck the city of Strasbourg. Hundreds of people were seized by an irresistible urge to dance, hop and leap into the air. In houses, halls and public spaces, as fear paralyzed the city and the members of the elite despaired, the dancing continued with mindless intensity. Seldom pausing to eat, drink or rest, many of them danced for days or even weeks. And before long, the chronicles agree, dozens were dying from exhaustion. What was it that could have impelled as many as 400 people to dance, in some cases to death?     

水压致裂法在加格达奇地应力测试中的应用

地下工程日益增多,地应力的大小又是地下工程设计中的重要参数.中国东部和西部地区建设力度较东北地区大,因此地应力的研究也较 东北成熟.据此,在东北地区以加格达奇镇的一个测量点为研究点,利用水压致裂法测量了1000多米范围内的地应力发展规律.     

截断思想在算法分析中的应用

本文应用数学方法将工程技术中遇到的无穷过程进行截断,以求得到实际问题的计算机求解,提出了不同于传统的用约等于或者四舍五入方法得到的数值.     

In This Issue

<正>SPACE SCIENCE Flying beyond the MoonWhen the scientific community and the public are celebrating the 50 th anniversary of the first manned landing on the Moon, China is preparing for its fifth lunar mission, the Chang'e-5, as well as a Mars mission, both to be launched in 2020. This country is extending its space exploration to deeper space and outer planets, including the Mars, asteroids and the Jupiter. For the time being, Chinese scientists are talking about the long-term layout of lunar and deep space explorations, including the scientific goals for its first Jovian     

In This Issue

<正>InFocus|Flying to Mars The launch of Tianwen-1,a Martian probe named after an ancient masterpiece of Chinese poetry,announced the beginning of China’s Mars Exploration Program (CMEP), signaling that this country’s deep space exploration has gone beyond the Earth-Moon system for the very first time.     

In This Issue

<正>HIGHLIGHTS|PHYSICS Micius dislroves"event formalism"modelIn their nine-decade-long endeavor to bridge quantum mechanics and general relativity,physicists have proposed many models of quantum gravity,the"ultimate theory"of the cosmos.Most of them,however,demand extremely stern experimental conditions to test.The"event