ࡱ> PRO Y bjbj .:YPP,<+^   J+L+L+L+L+L+L+$).0rp+ @   p++ J+ J+)|n*!j*6++0+*Z=1=1$n*=1n*       p+p+   +    =1         P Y: Principles of Searching e530 EXERCISE FOR UNIT 3TitleDialog 3: Vocabulary in searching Why?Searching is done by entering search terms and then, if desired all kinds of other stuff, like given authors, sources, years etc. But terms are at the base. In turn search terms are matched to terms in the system, or the vocabulary of the system. But a searcher has to either do some exploring of what may be the best terms to have most likelihood of finding the right items or go in blindfolded as to available vocabulary. Various databases have controlled vocabulary, mostly in terms of a thesaurus. These are great tools for exploring what may be most appropriate for a search, even if one does not restrict the search to descriptors (entries in a thesaurus). Thesauri could be printed (many libraries have a whole assortment); but nowadays there are more likely in a digital form someplace. Many databases, including Dialog, provide a capability to explore and then use thesaurus entries while searching. It is almost like browsing. Moreover, they let you browse other things as well, not only vocabulary for instance author names, journal names, and so on. Thus, browsing in general is an important feature of searching. When it comes to vocabulary, searchers are doing other things: they take concepts in questions and analyze what terms may be appropriate narrower and broader terms, related terms and synonyms, and related concepts; this is usually called question analysis. They also examine results to find what other related terms may be discerned; the process called relevance feedback. The objectives of this exercise are to explore: various browsing capabilities for vocabulary and other fields conduct a comprehensive search unifying various features Guide to exercise 3 (PowerPoint) provides examples of searches in the exercise. But in addition, it includes an exercise involving Dialindex. For Dialindex exercise there is NO deliverable. You use it to gain experience and wider competencies. Note: This is the last of the three exercises using Dialog, but we will use it again briefly in bibliometric searching for comparison (unit 9). However, you can use Dialog throughout the semester for your term project or just further practice and comparison with other systems.What?We will use Dialog again. By now you know how to get there and how to select a database. You will do three exercises. To prepare for the first two review the use of command e or expand. This exercise deals with expanding on terms. Part of this exercise was shown in Lecture 3, Vocabularies. Go again to ERIC Command: e (or expand) library from what you get choose to expand further one of the descriptors that has related R terms chose to expand library administration - e R9 (note: the numbers you get on e and R may differ) explore what related terms you get and choose another on e R22 Information services ( when you get the results you can restrict it to recent years (2008 to 2009, or from 2007 to 2009) Choose to type in free format Choose some to type in full format Save/print 3 items Deliverable: copy of Search history (you can copy paste the table); print of one full texts of articles you choose.  This exercise deals with expanding on authors Begin database 7 SocialSci Search e au=Saracevic? observe results switch database first to Library Literature and Information Science (file 438) and then to Gale Group Magazine Index (file 47) in each e au=Saracevic? Observe and compare results on number of articles by the author Deliverable: copy of Search history (you can copy paste the table); print of one full texts of articles you choose.  This exercise deals with doing a complex search in business. Look at article: Affelt, A. (2008). Researching the current banking and lending crises. Online (Wilton, Connecticut), 32 (4), 19 22. [in RUL and also in Doc Sharing] Repeat and if possibly expand on her suggestion for the search in Dialog databases. Examine the article for context. As to Dialog, here is her suggestion (p. 21): Files 15 (ABI/INFORM) and 139 (EconLit) in Dialog have excellent coverage of these journals, and descriptor terms such as subprime, mortgage?, delinquent ?, regulat?, and foreclosure? can be used to narrow results. In order to find discussions of the packaging of these mortgage loans into financial instruments (which led to the collapse of Bear Stearns & others), free text terms such as hedge()fund?, financial()instrument?, sivorsivs or structured()investment()vehicle, or mortgage?(3n)security? can be searched in proximity to subprime or mortgage()loan?. Note: () used above is short for searching (w) You can further expand on terms she suggested. Clearly you want recent articles but remember that the Last In are the First Out (LIFO) so the most recent will be first. Deliverable: copy of Search history (you can copy paste the table); print of one full texts of articles you choose.Questions?For each of the five searches provide deliverables as given. In addition comment on key aspects, findings, and learning, and submit. Comments count! (A group can submit one report, but in the title indicate group members that worked on the exercise): Address personal experiences: What did you find easy about using Dialog? What was difficult? Include Goldilocks evaluation: __This exercise was too easy __This exercise was too hard __This exercise was just rightFor practice on your ownIncluded in the Guide to exercise 3 is an exercise using Dialindex - a massive index that covers all Dialog files. It is used to find and select files that may be most useful for searching on given terms thus it helps you in selection of files when you do not which ones to use, or are not sure how much stuff do given files have for terms you want to search. You first do a search in Dialindex, then after review you select files to search. The exercise provides some explanation of Dialindex and suggests several practice searches. Objective: for you to get exposed to one of the more useful features of Dialog and get you on the path of exploring more on your own. Deliverables: None. 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