基于web的英语在线学习系统  

English Learning and Test System Based on Web Technology

作　　者：王战敏[1] 

机构地区：[1]西安理工大学计算机科学与工程学院,西安710048

出　　处：《计算机系统应用》2016年第7期96-100,共5页Computer Systems & Applications

基　　金：陕西省自然科学基础研究计划(2015JM6355);陕西省教育厅科学研究计划项目(2013JK1185)

摘　　要：介绍一个基于web技术的英语在线学习系统,详述了系统的设计方案及关键技术问题.首先,对系统中智能组卷算法与策略进行分析,以算法的实用性和可操作性需求指标建立一个智能组卷的数学模型,并设计一种基于改进遗传算法求解该模型的优化方法,实现通过对试卷指标的组合来随机生成符合约束要求的试卷,满足不同用户的个性化需求;其次,通过融合Ajax技术,实现系统在线测试中对考试进行时间控制,解决因B/S结构引起的"瓶颈"问题,减缓了数据流量.This paper introduces an English online learning system based on Web technology, and describes the system design schema in detail and the related key technologies. First of all, intelligent test paper generation algorithm and strategies of the system are analyzed, combining practicality and operability of proposed algorithm with practical technical indicators the mathematical model is established, and an improved genetic algorithm is designed for solving the model, a group of test papers are generated randomly by test paper indicators to meet the individual needs of different users. Secondly, by introducing Ajax technology, it realizes the time controll of examinations, resolve the bottlenecks problem which is caused by B/S structure, and ease the flow of data.

关 键 词：智能组卷 AJAX 遗传算法 数学模型 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论] TP18[自动化与计算机技术—计算机科学与技术]