空间曲线的切线向量求法

空间曲线的数学表示形式有多种，而不同的表示形式，求其切线向量的方法也不同。本就工程实际中可能出现的几种空间曲线的数学表示形式．分析其切线向量的求法。     

基于语义的主观题自动批改算法的设计

主观题自动批改是网络作业管理系统的一个难点所在。利用中文信息处理的知识,在描述知网的基础上,提出了一种基于语义的主观题自动批改算法。     

平面向量:构建知识网络的绝佳载体

平面向量作为高中数学新教材的新增内容，在高考试题中占有显著地位。本文从平面向量的特性出发，从高考备考的角度初步探讨了平面向量在构建知识网络中的优势和重要性。     

一类非线性向量变分不等式

利用FKKM定理，来讨论一类非线性向量变分不等式在凸集上解的存在性。     

Support Vector Machine active learning for 3D model retrieval

In this paper, we present a novel Support Vector Machine active learning algorithm for effective 3D model retrieval using the concept of relevance feedback. The proposed method learns from the most informative objects which are marked by the user, and then creates a boundary separating the relevant models from irrelevant ones. What it needs is only a small number of 3D models labelled by the user. It can grasp the user's semantic knowledge rapidly and accurately. Experimental results showed that the proposed algorithm significantly improves the retrieval effectiveness. Compared with four state-of-the-art query refinement schemes for 3D model retrieval, it provides superior retrieval performance after no more than two rounds of relevance     

灵活处理32位ARM嵌入式系统异常中断程序

改写中断程序需要修改C程序的汇编启动代码，这项工作比较繁琐。本文针对这方面的技术和方法做出总结，以方便读者简便高效地实现动态的加载和改写异常中断程序。     

三矢量的双重矢性积定理的证明

本文通过对空间解析几何的研究和探讨，从学生的思维特点出发，给出一个有利于学生认知结构形成的三矢量的双重矢性积定理的证明。     

唐代山南西道经济发展的结构问题

唐代山南西道的经济发展使其形成了相对繁荣的中心经济区域和相对落后的边缘经济区域。边缘经济区域的家庭生产单元以所产实物与“以负贩为业”的职业商贩进行“随土交易”式的商品交换。在职业商贩的中介下，分散的自然经济与市场经济整合并存在一起，这不仅使山南西道发生了从唐初“不甚趋利”到唐后期“利私自入”的观念转换，而且也使山南西道的商品经济发展呈现出结构性的常态运转。     

Using SVM to construct a Chinese dependency parser

INTRODUCTION Conventional parsers with practical levels of performance require a number of sophisticated rules that have to be handcrafted by linguists. It is time-consuming and cumbersome to maintain. A lot of rules will generate conflict, so such rules often deteriorate the overall performance of the parser. The stochastic approach, on the other hand, has the po- tential to overcome these difficulties. In the late 1980s and early 1990s, the induction and parameter estima- tion of probab…     

Modelling of modern automotive petrol engine performance using Support Vector Machines

Modern automotive petrol engine performance is significantly affected by effective tune-up. Current practice of engine tune-up relies on the experience of the automotive engineer, and tune-up is usually done by trial-and-error method and then the vehicle engine is run on the dynamometer to show the actual engine performance. Obviously the current practice involves a large amount of time and money, and then may even fail to tune up the engine optimally because a formal performance model of …