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Search Strategy and Information Retrieval By Rekha Gupta, NIC [email protected]

Search Strategy and Information Retrieval By Rekha Gupta, NIC [email protected]

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Page 1: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Search Strategy and Information Retrieval

ByRekha Gupta, NIC

[email protected]

Page 2: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

SEARCH STRATEGY

The Search strategy is a plan that helps you look for the information you need.

Page 3: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Search Strategy Tips• Identify the key concepts (Keywords). e.g. What role does

pain have in sleep disorders? The key concepts are: pain, sleep disorders

• e.g. Microbubbles breast cancer treatment? The Key concepets are: microbubbles, breast cancer,

treatment.

• Detremine alternative terms for these concepts, if needed. e.g. cancer – neoplasms

• Refine your search to dates, age groups, language, etc., as appropriate

• Practice helps

Page 4: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Scope of Search• In search strategy development, it is important

to remember that the computer searches for words not concepts.

• Words can be searched in a natural language fashion

• The search of a word can be limited to a specific field.

• Without requesting a particular field, the search will be conducted for the word automatically, or by default, in all the fields.

Page 5: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Main Resources for Medical search

– International• PubMed

– National• IndMED

Resources like PubMed and IndMED helps you to gather references to earlier research / work done in a systematic manner.

Page 6: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

PubMed• PubMed is the free public interface to MEDLINE.• It provides access to bibliographic information in

MEDLINE as well as additional life science journals. • MEDLINE is the National Library of Medicine's premier

bibliographic database covering the fields of medicine, nursing, dentistry, veterinary medicine, the health care system, and the preclinical sciences.

• MEDLINE contains citations from the 1950's to present, covering more than 4,500 biomedical journals. There are currently over 14 million records in the database.

Page 7: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in
Page 8: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

IndMED• IndMED = INDexing of Indian MEDical Journals;

http://indmed.nic.in • Why?

– Poor representation of Indian medical Journals in PubMed. (MEDLINE)

– To expose the Indian medical research literature globally

• Started to Index Non-PubMed but quality Indian journals, now Indexes even PubMed journals hosted on MedIND (Full Text)

• Indexes only peer reviewed journals• Provide a world wide free access over the Web

Page 9: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

• Coverage of journals back from 1985 onwards• Provides references along with Abstracts • Full text links are provided at articles level for

those journals who have signed MOU with NIC for hosting on MedIND

Page 10: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in
Page 11: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Journal Selection Criteria

• Journal should be Peer-reviewed• Journal should be published on time• Journal should be published at least twice in a year• Journal should have started at least three years prior

to selection• Journal should follow the guidelines of International

Committee of Medical Journal Editors (IJMJE - http://www.icmje.org/)

Page 12: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Searching

Page 13: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

HOW TO SEARCH

• To search by an author's name, enter the author’s last name plus initials without punctuation e.g.smith ja, jones k.

• If you know only the author’s last name, use the author search field tag[au], e.g. smith[au]

• To search by topic type as it is, in the search box without any boolean operators and punctuations e.g. Microbubbles breast cancer treatment.

Page 14: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Continued :

• To search by journal title either you enter journal titles in full e.g., molecular biology of the cell; or the MEDLINE abbreviation, e.g., mol biol cell;

• To search for an journal go to Single Citation Matcher on the home page of pubmed.

Page 15: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

PubMed helps you choose search terms. When you enter a word, an automatic list will be generated listing possibilities.

Page 16: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Searching

Page 17: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in
Page 18: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in
Page 19: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

With 19 million (and growing) citations in the database, a basic search will generate more hits than you may want. Use Limits to focus your results. One of the limits is to free full text.

Page 20: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in
Page 21: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Once you activate limits, they will continue to be applied to your search results until you change or remove them.

Page 22: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

PMC or FREE?: PMC (PubMed Central) is a database within a database. PMC is a collection of medical journals that make their articles available for free in compliance with NIH grants’ regulations. While you can search PubMed Central separately, all PMC results also display in PubMed. In addition, many medical publishers—whether contributing to PMC or not—make articles available for free. PubMed also links to these articles, making PubMed a useful tool for finding free fulltext articles.

Page 23: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in
Page 24: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

The Abstract view includes much helpful material: related citations (notice how the Review articles are indicated), a link to all related reviews, links to information in other NCBI databases, and your recent activity in PubMed.

Page 25: Search Strategy and Information Retrieval By Rekha Gupta, NIC g.rekha@nic.in

Thank You