LIS 663 Basic Database Searching Term mapping, suggestion and clustering 4.: LIS 663 Basic Database Searching Term mapping, suggestion and clustering 4. Dr. Péter Jacsó Fall 2007 PowerPoint: Judit Tiszai


Slide2: Jacsó By now you know that - Not all thesauri are born equal - Not all implementations of the same thesaurus are born equal National anthem - Same tune, same lyrics - Delivery by Whitney Houston vs Roseanne Barr


People do not use thesaurus unless they must: People do not use thesaurus unless they must Jacsó Extra step "Good enough without it" attitude Archaic, stale content, uneasy ESL structure Aging crooner at retirement home party Very few are Tina Turners Less then 10 percent of databases have thesaurus implemented on DIALOG, Ovid, SPIRS, CSA, OCLC


Slide4: Jacsó You can tell the horse that there are rivers You can tell the horse to go to the river You can spur the horse to go to the river You can lure the horse to the river But will it drink the water? Will it like the muddy and stale water?


Slide5: Jacsó Bring the water from the river to the horse But the water still may be muddy and/or lukewarm Mapping users' terms automatically into thesaurus terms Once again, it depends on who does the delivery Ovid versus SilverPlatter


Slide6: Jacsó Attitude remained the same I wanna search not browse Real men don't ask for directions They just drive around the block as if for fun Give up finding the gourmet restaurant and go to BK Only hope: even the machoest machos look at road signs Use term mapping (but call it term translation when talking to male patron)


Good mapping, over-hyphenation and slicing MEDLINE are a put-down in WebSPIRS: Good mapping, over-hyphenation and slicing MEDLINE are a put-down in WebSPIRS Jacsó


DataStar just launched it in 2003 and only for MEDLINE and EMBASE, but good: DataStar just launched it in 2003 and only for MEDLINE and EMBASE, but good Jacsó


In Ovid's mapping to Quebec is odd : In Ovid's mapping to Quebec is odd Jacsó


Slide10: Jacsó … the reason is that it appears as minor MeSH term reporting about clinical studies of people in Quebec in a conference held you guessed where


Slide11: Jacsó OCLC - 50 records analyzed, why bother with human, female, male, adult gender and age check tags when “abused wives” obviously imply act among humans, a male female adult pair which…


… drown out the far more related ones: … drown out the far more related ones Jacsó


SPIRS - what it does to PAIS?: SPIRS - what it does to PAIS? Jacsó


aha, maps into title words : aha, maps into title words Jacsó


and for economy? My, oh, my: and for economy? My, oh, my Jacsó


or for income : or for income Jacsó


You'd better go and look up the thesaurus yourself : You'd better go and look up the thesaurus yourself Jacsó


The original MeSH entry : The original MeSH entry Jacsó


SPIRS is now OK with MeSH mapping : SPIRS is now OK with MeSH mapping Jacsó


But Ovid is still much better for MeSH : But Ovid is still much better for MeSH Jacsó


OCLC descriptor index browsing brings up nothing (it is not mapping!) : OCLC descriptor index browsing brings up nothing (it is not mapping!) Jacsó


Mapping finds it, but dilutes list with irrelevant check tags : Mapping finds it, but dilutes list with irrelevant check tags Jacsó


EBSCO can make good suggestions in its own ASP : EBSCO can make good suggestions in its own ASP Jacsó


although it is not consistent in giving suggestions : although it is not consistent in giving suggestions Jacsó


It is a wonderful British & American equivalency (at first sight) in MeSH in Ovid : It is a wonderful British & American equivalency (at first sight) in MeSH in Ovid Jacsó


when you enter the British term : when you enter the British term Jacsó


it directly maps to the American exact MeSH term (note the e and the A): it directly maps to the American exact MeSH term (note the e and the A) Jacsó


the trick is in the scope note where haemophilia and hemophilia are listed as UF : the trick is in the scope note where haemophilia and hemophilia are listed as UF Jacsó


but you can't count on consistency for British terms to directly mapping into MeSH (it is a MeSH deficiency, not sw): but you can't count on consistency for British terms to directly mapping into MeSH (it is a MeSH deficiency, not sw) Jacsó


and the American version directly maps to the same : and the American version directly maps to the same Jacsó


SPIRS is not bad with the American versions but it never maps directly : SPIRS is not bad with the American versions but it never maps directly Jacsó


or with the British versions of terms : or with the British versions of terms Jacsó


Good even with the irregular plural query : Good even with the irregular plural query Jacsó


but Ovid is better with more instant search options : but Ovid is better with more instant search options Jacsó


What if mapping is not on?: What if mapping is not on? Jacsó


What if mapping is set to ON by default (as it should be in Ovid)? It suggests sciatica : What if mapping is set to ON by default (as it should be in Ovid)? It suggests sciatica Jacsó


Is sciatica a really equivalent term to ischialgia? Look at the scope note. It does not appear as synonym, but its definition seems real good match: Is sciatica a really equivalent term to ischialgia? Look at the scope note. It does not appear as synonym, but its definition seems real good match Jacsó


and it is assigned to 2,625 records, so well worth checking further : and it is assigned to 2,625 records, so well worth checking further Jacsó


what does MEDLINE arch-rival EMBASE say? It is certainly used in European literature : what does MEDLINE arch-rival EMBASE say? It is certainly used in European literature Jacsó


and it maps to the exact EMTree term (MeSH equivalent) : and it maps to the exact EMTree term (MeSH equivalent) Jacsó


and even better, sciatica is mapped to ischialgia. BINGO, isn't it? : and even better, sciatica is mapped to ischialgia. BINGO, isn't it? Jacsó


and here is its scope note (sorely missing a medical definition, but the UFs are clearly convincing). : and here is its scope note (sorely missing a medical definition, but the UFs are clearly convincing). Jacsó


Since this original test ….. -: Since this original test ….. - Jacsó SPIRS improved MEDLINE mapping Eliminated age groups, gender tags Suggests 10 MeSH terms Gave up mapping in Soc Abs Brutally botches mapping in PAIS EBSCO tries its hand in matching with scope notes but not in derivative mapping


- Since this original test …..: - Since this original test ….. Jacsó OCLC selectively tries derivative mapping, but does not get it fully Ovid is still the best and smartest, but sometimes does fail DataStar is Johnny-come-lately, but promising though limited to MEDLINE and EMBASE