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DS_Dialog_Introduction to the Search Syntax

1. Dialog Search Syntax 1 of 3

1.1 Introduction

Notes:

Welcome to this Dialog e-learning session, Introduction to the Search Syntax. This session includes information about search defaults, logical operators and truncation. It is recommended that you view the Dialog Platform Introduction prior to beginning this session. However, no previous search experience is required.

Published by Articulate® Storyline www.articulate.com

1.2 Session Objectives

Notes:

At the end of this module you will be able to recognize and efficiently use the system search defaults. You also will learn how to apply other basic search tools, such as the Boolean or Logical operators and the Truncation.All of the following search examples contained in this session can be run on any search level of the platform, whether in the Basic Search, Advanced Search or the Command Line.

1.3 Defaults – Automatic retrieval of word variants

Notes:


The Dialog platform is setup with some automatic search features, designed to help you build a more efficient search. One of these search features is the automatic retrieval of certain word variants in the English language. For example, given a single noun, Dialog will automatically also search the plural version of that word, being it regular, such as EVENTS if you search for EVENT, but also irregular, such as WOMEN for WOMAN, CHILDREN for CHILD, etc. As you can see, whichever variant is searched the number of results is the same.

1.4 Defaults – Automatic retrieval of word variants

Notes:

Other variants that will be searched automatically are the different spellings between American and British English. For example ESTROGEN, COLOR, or ANALYZE. Automatic searches also include different word endings of the Comparative and Superlative adjectives. For example, searching for LARGE will also retrieve documents that contain only LARGER or LARGEST. This automatic retrieval of word variants is a setting that can be deactivated by any user in the My Research Preferences or by the Administrator, using the ProQuest Administration Module.The deactivation is not permanent and can be changed back to active at any moment.


1.5 Search Default Settings

Notes:

Other search features in the platform will work automatically. For example, whenever 2 or more words are listed in the search box separated by a space, the space will work as the logical operator AND.As you can see, searching with the space or with the AND will retrieve the exact same number of results.Remember that the AND operator will retrieve all the documents that contain all the search terms at least once each anywhere in the document and not just phrases.

1.6 Phrase Searching

Notes:


Phrase searching can narrow your search to reveal more targeted results. In the first search for ADVERSE EVENT, the terms are simply entered into the search box, prompting Dialog to perform a search for all documents that contain those words including the phrase. However, when the terms are enclosed in quotation marks, Dialog searches on that phrase only, narrowing the results significantly to those that may be more relevant to our needs.

1.7 Boolean Operators

Notes:

Let’s briefly review the value of the logical operators, also known as boolean operators.

The AND operator will require the documents to contain all the search terms. In a search like this, it’s enough that the documents contain the search terms at least once for each to be retrieved.

AND can be used to link more than one concept, each one equally essential for the purpose of the search. The more terms are linked with AND, the more focused the search will be.



Notes:

The OR operator will retrieve all the documents that contain at least one or the other of the search terms. Any of them can be useful, but they don’t all necessarily need to be present. OR is typically used to list several alternative terms or synonyms of the same concept.

The more terms will be linked with OR the more results will be retrieved.


Notes:


The NOT operator can be used to exclude terms from your search results. Typically users employ this operator when they want to eliminate potentially irrelevant documents from their search results. However, it should be used with caution because it could also potentially exclude relevant results at the same time.

1.10 Truncation

Notes:

An extremely useful tool to achieve a more flexible search is the truncation. Here the Asterisk symbol is used for the wildcard.The asterisk applied to a word, typically the root or stem of a word, will retrieve words with up to a maximum of 10 more characters than the given term. The truncation goes beyond the automatic retrieval of specific variants such as the plurals or adjective endings, and is useful to retrieve several more suffixes. The term truncated here can include DEPRIVED, DEPRIVES, DEPRIVATION, DEPRIVING….

The truncation can be applied at the end, at the beginning and in the middle of the word. The left truncation is useful for complex chemical names.

Keeping in mind the limit of 10 more characters, it should be used carefully in the middle of the word. Also truncating very short stems, 2 or 3 characters long, should be avoided.


1.11 Truncation

Notes:

Remember that the quotation marks “turn off” the retrieval of the word variations. for example, if you need to retrieve the plural of one or more of the search terms in a phrase, you can apply the truncation to the terms within the quotation marks. You can see the difference in the search results when you apply the truncation to retrieve “Adverse Event” versus “Adverse Event*”

1.12 Summary

Notes:


In this session we introduced the default search settings of the Dialog platform and explained how to recognize them. We also looked into the basic search tools, such as the logical operators and the truncation, and how to use them.

1.13 Thank you!

Notes:

Thank you for viewing this learning module. Please visit the LibGuide where you launched this session to access additional education and support materials.


1.14 Copyright

2. Test Question Bank

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articulate word output - amazon s3 · web viewautomatic searches also include different word...

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