1. 1 Guide to exercise 2 Brief examples Tefko Saracevic

2. Using fields and different operators Explore federated searching on Dialog – called OneSearch Here we will give limited examples – the rest is in the Exercise for unit 2 And a few useful operators Objectives Tefko Saracevic 2

3. Truncations: variation of terms Tefko Saracevic 3

4. Proximity operators: phrases and terms in neighborhood Tefko Saracevic 4

5. Stop words Tefko Saracevic 5

6. note on fields in Dialog Dialog has two kind of indexes & they allow for searching in different fields: Basic Index: when a search term is entered the whole Basic Index is searched by default to search only a given field, e.g. title then the search is for xxxxxxx/TI Additional indexes: to search for an author or journal the search term is AU=xxxxxxxx or JN=xxxxxxxx Combined search is possible: select search AND engine? AND AU=xxxxx select search engine?/DE AND JN=xxxxx Tefko Saracevic 6

7. OneSearch by steps Tefko Saracevic 7 1 Getting to OneSearch – searching a number of databases simultaneously - AKA federated search

8. Choosing databases already selected in given broad areas Tefko Saracevic 8 2

9. 9 One can select all or clear selection and then select any one or few 3 4 If Select All then the command line shows the command. Click on Submit. Button selections show in command line, not only in Dialog but in many other vendors

10. search for variations & restrictions on search engines – three databases searched simultaneously S3 = ss search AND engine? in that search S1 shows no. of items for search and s2 for engine? S6 = no. of items after duplicates were removed S8 = ss S5 and publication years 2008 and 2009 S7 shows how many items for these years were included S8 = 48 items published in those years with a descriptor search engine ? Tefko Saracevic 10

11. Variations on the theme for author searching S1 = zero because no author was mentioned only like that S2 = there was only one entry that had Saracevic, T. S3 = 99 entries of author Saracevic, T?, meaning any variation after letter T S4= removed duplicates from 3 databases searched S5 = all kinds of authors with the last name Saracevic S6 = duplicates removed Tefko Saracevic 11