Chapter5_EI叙词检索.ppt

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2017-04-06 发布于上海
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Chapter5_EI叙词检索.ppt

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Chapter5_EI叙词检索

工程索引数据库检索与利用（Engineering Index，简称EI） Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 关键词取自原文中具有关键概念的词或词组，它来自于标题、文摘、全文（全记录）或标引人员给出的标引词。叙词与关键词区别 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 新概念, 缩写和全名产品或公司名称地名化学制品 (无机化合物分子式, 有机化合物名称) 数字数据非专业或技术性词或词组（俗称）关键词包括： Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 词及词义的变化拼写首字母缩略词术语书写方式的不同注：如果忽略上述变化, 漏检率就会提高。用关键词检索常会遇到的问题 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. colour color defence defense atomisation atomization aluminium aluminum fibre fiber catalogue catalog sulphur sulfur modeling modelling haemodynamics hemodynamics disc disk programme program grey gray 拼写的不同注：忽略拼写的变化就会导致漏检。 Evaluation only. Created with Aspose.