基于组合特征的关系抽取研究

实体关系抽取是信息抽取领域的一个非常重要的子领域。实体关系抽取任务主要是利用计算机自动抽取命名实体之间的关系。现有的关系抽取方法有基于规则的方法,基于特征向量的方法和基于核的方法。本文主要介绍了一种利用了多种特征进行组合来进行关系抽取的方法,并结合ACE语料进行了实验验证了组合特征的有效性。     

文本信息中的目标动向感知技术

通过建立目标动向的本体模型以及采用基于规则的方式来对文本信息中的目标动向描述语句进行语义分析,完成目标动向的识别和关联语义信息抽取;在提取大量的文本信息中的目标动向信息上建立目标与时空的关联关系,有利于文字信息分析人员感知目标在时空范围内的态势。通过对目标的动向信息抽取和结构化的关联关系转化及分析,可以为情报分析人员提供锁定目标的态势数据,并通过目标动向情况预测锁定目标的活动趋势、预警分析等。     

面向合作伙伴选择的中文Web信息获取系统研究

本文研究应用WEB信息抽取技术在互联网上主动搜索合作伙伴的理论与方法,提出了面向合作伙伴选择的中文Web信息获取系统的总体架构,并分析了实现该系统的关键技术—基于元搜索的网页搜集、基于样本公共特征的企业主页过滤、基于模式的企业信息抽取,并对这三个关键技术进行了详细的介绍。最后,按照作者提出的思想,编程实现了一个面向合作伙伴选择的中文Web信息获取原型系统,利用该系统验证了作者所提方法的可行性及证明了该方法的准确性。     

主动毫米波成像地海面目标识别方法

主动毫米波成像传感器为前下视对地成像,作为侧视SAR和前斜视SAR成像的补充,能够实现全方位观测覆盖,采用扫描方式实时获取飞行路径前方地物目标图像数据,在飞行器导航中具有重要应用前景。针对主动毫米波成像目标识别所面临的成像信噪比低、图像方位向分辨率低以及保障条件为异种传感器图像数据等难点,探讨了目标检测识别实时信息处理流程中的地面信息保障、匹配识别算法等若干关键技术和方法,结合目标背景特性,提出的结合特征检测的目标匹配识别定位方法,能满足低信噪比条件下的目标快速检测识别的要求。     

大数据环境下互联网金融的创新发展模式分析

在网络化和数据化为主要特征的时代,大数据和金融呈现出融合发展的特点。大数据是金融核心资产中的关键部分,在金融业稳定发展过程中起到了不可或缺的作用。金融工作人员通过使用大数据,从而能够从海量数据中快速获取所需信息,以此为互联网金融决策提供科学参考,促使了互联网金融的快速发展,也提高了大数据在金融业的应用效果。本文在大数据时代背景下,对互联网金融发展的创新模式作出科学详细探讨。     

网络大数据助推网络舆情研究与政府管理实践

随着互联网和移动网络的快速发展,人们的知识获取越来越依赖网络新闻报道和社会媒体信息。同时,随着各种网络媒体信息交互性不断增强,网络信息具有了大数据特征。深入研究和不断挖掘网络大数据,提取网络大数据的有用信息,一方面,可以促进网络舆情理论研究,进一步深化网络大数据集成理论、网络大数据分析技术和网络大数据应用方法;另一方面,通过网络大数据分析和挖掘,获取政府管理有用信息,可以直接指导政府管理应用实践,对政府管理部门更加全面地了解社情民意,应对公共突发事件发生并进行及时响应,具有重要的应用价值。     

文章方向数字图像识别

本文主要是研究并设计了文字特征提取、文字特征识别以及基于数字图像预处理的文字识别方法。在研究文字的数字图像预处理时,提出了一种算法,叫做数字文字图像的信息增强算法,这可以精确定位数字文字图像;而且还实现了对数字文字图像架构信息的分析提取,以及在非完整文字获取情况下的算法修正。并且,通过对文字笔画、住置等的分析,设计了特别的提取算法,以及特征识别器,实现了数字文字的特征提取,以及后续的识别,并对测试样本进行了测试。     

浅谈数据挖掘在电子商务中的作用

数据挖掘是一种新的商业信息处理技术,其主要特点是对商业数据库中的大量业务数据进行抽取、转换、分析和其它模型化处理,从中提取辅助商业决策的关键性数据。利用功能强大的数据挖掘技术,可以使企业把数据转化为有用的信息以帮助决策,从而在市场竞争中获得优势地位。     

基于大数据的中小型电商企业精准营销研究

当前随着社会信息技术的快速发展,数据信息呈现爆炸式的增长,在进入到大数据时代,大数据信息的精准营销成为数据时代各个电商企业竞争的关键,开始注重对精准营销的研究。电商企业通过从海量的数据中进行挖掘和分析,获取比较精准的用户信息,做好个性化的营销策略以达到较好的营销效果。本文将从大数据的中小型电商企业精准营销方面进行分析,提出相对应的营销策略。     

基于CVD和Radon变换的旋翼无人机识别

在无人机的检测与识别过程中特征提取尤为重要。针对在低信噪比下由于提取特征困难且鲁棒性较差导致的识别效果不理想的问题，提出了一种基于改进的CVD（Cadence-Velocity Diagram）和Radon变换的特征提取方法应用于识别旋翼无人机。该方法通过提取目标的频率信息、峰值信息和边缘信息作为特征，运用K近邻分类器进行分类识别。仿真结果显示，在信噪比为-15 dB的条件下能够达到96.67%的识别精度。所提方法在低信噪比下识别效果明显优于SVM和朴素贝叶斯等算法。     

Brown＇s Blossom in Britain-China

The overall strategic relationship between U.K. and China is ＂better than ever＂, China- Britain relations have maintained good momentum, with increased high-level exchanges and the reinforcement of strategic mutual trust, with more room for growth in the future.     

Challenge and Opportunity Go Hand in Hand——What Global Economic Agitation Brings to the China's Economy?

Domino effects of the global finance agitation As the origin of the subprime crisis,US financial institutions lost USS45 billion last year,accounted for over half of the total US,EU & Japan loss.Since January 15th,Chtigroup released its financial statement of the 4th quarter,showing a net deficit of USS9.83 billion,which marked the hisoric high of its quarterly deficit.     

Sinosteel：Extraordinary Moves in Industry Chess

Among the Fortune 500 firms,more and more images from China emerge out.On the 2008 list,Sinosteel Corporation,a landmark group of China industries quietly squeezes into the candidate line.As the largest steel service ＆ trade enterprise,its sales reached at RMB 111.24 billion,with a year-on-year increase of 83.03 percent,and the profit grew by 180.03 percent.On the Sinosteel 2008 Work Meeting,the president Huang Tianwen uttered,＂In the coming year,we will work for US$20 billion sales,and look forward to getting a position in Fortune 500 firms for ourselves.＂     

Walk Through Unusual Five Years—— An Exhibitor＇s Canton Fair Course

When the 103rd Canton Fair is approaching, an old friend of Canton Fair, Li Ying from Jiangsu prov-ince recollected his past five years＇ experiences to the grand trade meeting. Each year is special, with some unforgettable memories colored by the year.     

Jean-Pierre Duprieu： Willing to Be A Legate of Sino-French Business

Estaing, former French president, Valery Giscard d＇Estaing attended Sino-French Economic Seminar held in Shanghai in early April and said that the world center has shifted from the west to the east with many European and US companies entering into Asia, and China has the ability to play an important role in the world stage. Estaing, naming himself＂French Confucian＂, then said in Chinese that a cook-group includes 10 people in ancient Chinese soldier system and the cook is in charge of cooking for them. And people who belong to the same cook are actually ＂Partners＂.     

China''''s Stock Market Wave

The annual meeting of the World Economy Forum was held in Davos,a little town in Switzerland,on January 23rd to the 27th this year,with the theme"the Power fo Collaborative Innovation",over 2500 celebrates from ture political and cconomic circles of more than 80 countries and challengred logether to talk about the future of the global economy in 2008,A Forum for the problems and challenges that face whole world,some of the keywords which drew attention during the event were:the U.S.subprime mortgage crisis,soaring energy prices,the economic slowdown in the U.S.ermerging economic bodies,authority funds and the general unpredictable nature of the global economy.     

Trade Promotion from Neighborhood

If you are considering to trade with companies in Japan or expanding your .business to Japan, we are ready to help from the very beginning.＂ You will find this greeting at the first sight on the Chinese website of Japan External Trade Organization （JETRO）. JETRO has committed itself in delivering highly efficient and quality services to meet the demand of internal and external customs including Japanese companies, hence winning a good reputation in the international trade arena. In recent years, with its priority in advancing business cooperation in South and East Asia, JETRO has made great achievement in promoting trade between China and Japan. Therefore, China＇s Foreign Trade interviewed Mr. Yoichi Maine, Deputy Director General of JETRO BEIJING.     

Auto Parts Market Potential Coming into Surface

Looking at the increasingly fierce competition in the world auto market. global automobile manufacturing industry, taking Europe, the U.S. and Japan as representatives, is gradually forming a new type of relationship, mutual cooperation between whole vehicle and parts manufacturers. We can clearly see that auto parts manufacturers have become independent from the whole vehicle manufacturing companies, which means that the former structure of auto industry has greatly changed, and a new relationship,     

Domino Effect on Electricity and Coal Prices

In the middle of last December, the key purchase contracts for coal used in power generation in 2008 were signed, reflecting a demand for more than 1.085 billion tons. It is important to note that the country＇s five biggest power producers, China Huaneng Group, China Guodian Corporation, China Power Investment Corporation, China Huadian Corporation and China Datang Corporation, had settled on the prices on their purchase contracts, and they are expected to consume 290 million tons of coal for generating electricity,     

Slimmed May Day Holiday

Last November the State Council of China decided to renew its holiday system by reducing the seven-day May Day holiday to three days and introducing three new one-day public holidays, namely the Qingming Festival, Dragon Boat Festival and Moon Festival. By doing so, the three golden-week holidays that were introduced in 1999, namely the Spring Festival, May Day and National Day, could be better distributed.