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Metasearchers Benchmarking José Mª Carrión Pérez Andalusian Public Health System Virtual Library February 20-21, 2008. Seville

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Page 1: Metasearchers Benchmarking

Metasearchers Benchmarking

José Mª Carrión Pérez

Andalusian Public Health System Virtual Library

February 20-21, 2008. Seville

Page 2: Metasearchers Benchmarking

1. Introduction

Last decades we opened the way in our institutions to the hybrid

library, and the electronic collection was constituted as a library quality indicator

is not enough a good collection of electronic resources, from now on the evaluation will also fix its attention in the digital portal, the success of the information architecture (AI) and its functionalities

Page 3: Metasearchers Benchmarking

This takes us to consider

a specific human team is needed, with a group of deep knowledge and in permanent bring up to date.

the Library should have a budgetary departure, in order to maintain chapter like in that of investments, for the maintenance of the portal,

the librarians should confront the administration of the contents in the portal as a new activity area

Today's library would be that considers the best form of applying the technology to satisfy the necessities and expectations of the user(1)

(1) Enjolras M. Bibliotecas, nuevos servicios y tecnología: entrevista con Jerry Kline, Innovative Interface INC. El profesional de la información 2006;15(1):65-74.

Page 4: Metasearchers Benchmarking

This report revises a series of suppliers of Libraries Management Systems products (LMS) and other library products to which we will call system of

portals library(2)

These last ones are sophisticated tools to create portals where to harbor and to negotiate resources of information, including electronic resources, own resources or acquired by license.

(2) Cox A, Yeates R. Library orientated portals solutions. 2002. Consulted en 14-01-08. Available from: http://www.museglobal.com/PDF/Library%20Oriented%20Portals%20Solutions.pdf

2. Objectives

•Metalib

& SFX

•Zportal

•Millenium

Access Plus (MAP)

•Search

Solver

•Sirsi

SingleSearch

Page 5: Metasearchers Benchmarking

3. Material and Methods

To carry out the study, we considered three parameters:

the available literature on those “Library Portals”

and metasearchers

the information given by the suppliers of Library Management Systems (LMS) and tabulated through an insole of 81 items contained in 13 areas(3)

the results and the evaluation of the same ones through a series

of equations of searches replied in each metasearcher

(3) Chvatal D. ALA 2003 Midwinter report. Biblio tech review. 2003. Consulted 09-02-08 Available from: URL: www.biblio-tech.com/btr11/ALA_2003_MW_Complete.cfm

Page 6: Metasearchers Benchmarking

they are tools constituted by two differentiated components: the

user's interface and that of the librarian.

•The first one allows to present them resources of the library in

a structured way and its offers search tools and recovery of the information in the whole collection.

•With second tool, the librarians describe and structure the contents (electronic review, databases, e-books, opacs, etc.) that will be shown in the user's interface.

4. What is the Library Portals?

It is necessary to differ among “library portals” and mere traversals searchers since it usually confuses yourself. A “library portal” it is characterized to prepare:

•A administration module of electronic resources so much at cataloguing level as of diffusion •A module of user administration and access licenses to the electronic resources •A metasearcher•Environments personalized for the users •A module of use statistical

Page 7: Metasearchers Benchmarking

5. What

is

a metasearcher?

It is a system that allows the unified access (unique Interface)

to multiple systems and resources of information (databases, OPAC's, Gateways, etc..). It carries out a search simultaneously in a selection of databases and electronic resources.

When receiving an application, the system metasearcher

determines which systems possess in its base of knowledge and which are appropriate to interrogate and to obtain information. It looks for, it organizes, it structures and it sends the information to the user that carried out this search(4).

(4) Gomez Dueñas LF, Correa M. AT. Metabúsqueda: integrando colecciones y mejorando la difusión. XII Jornadas de actualización en bibliotecas médicas. 2005. Consulted el 22-12-07 Available from: http://eprints.rclis.org/archive/00004849/02/ponencia_unirecs.pdf

(5) Benítez H, Robayo S. Protocolo Z39.50 una herramienta importante en la recuperación de la información. 2007. Consulted el 7-12-07 Available from: http://eprints.rclis.org/archive/00009877/01/PROTOCOLO_Z39_50.pdf

(6) Arango de V. ME. El Z39.50 en el ambiente de transferencia y recuperación de información. Revista Interamericana de Nuevas Tecnologías de la Información 2000;5(1):18-24.

they

should

look

for

and to

recover

information

of a great

systems

variety(5;6) and metadatos models

that

include:

Open norms

(Z39.50, open Norms, OAI-PMH, SRW/SRU, http, MARC, DOI, SQL, EAD, TEI, XML, Dublin

Core, etc..) • Methodologies

Owners. • System

of local Information

Page 8: Metasearchers Benchmarking

Interface of usuaryService Provider

Server

Z39.50

Gateway Z39.50

Server

Z39.50

DataBase

XML

Server

OAI-PMH

Data Provider

OAI-PMH Gateway

DOI, SQL, EAD, TEI, Dublin Core, etc.

Search Display Results

Translate / Comunicate

Process Results

conectors conectors

1

2

22 22 2

2

3

3

4

Access direct to records/documents Data Base

E-journals

OpenURL

Resolver

DataBase DataBase DataBase DataBase DataBase

Page 9: Metasearchers Benchmarking

6. ResultsIt checks 12 sections(3,7)

that they should keep in mind when metasearchers

are evaluated with in the following one “Agree”

or evaluation insole:

Section

A. Search

functionsSection

B. User

personalisation

functionsSection

C. Access control functionsSection

D. Database

communication

protocols

supportedSection

E. PlatformSection

F. Data Base PredefinedSection

G. Personalization

platformSection H. Integration SGBSection I. Delivery of final documentSection

J. StatisticsSection

K. Link resolverSection

L. Vendor

support

•Metalib

& SFX

•Zportal

•Millenium

Access Plus (MAP)

•Search

Solver

•Sirsi

SingleSearch

(3) Chvatal D. ALA 2003 Midwinter report. Biblio tech review. 2003. Consulted 09-02-08 Available from: URL: www.biblio- tech.com/btr11/ALA_2003_MW_Complete.cfm(7) Dorner DG, Curtis AM. A comparative review of common user interface software products for libraries. National Library of New Zealand. 2003. Consulted 08-02-08 Available from: URL: www.natlib.govt.nz/catalogues/library-documents/common-user- interface-software

S: Yes. The product completes the requirement (4 ptos) N: No. The product doesn't complete the requirement (0 ptos) D: Unknown. The producer doesn't provide information in this respect (0 ptos) P: Partially. The product completes the requirement partially (2 ptos) F: Future. The product will complete the requirement in the next version (1 pto)

Page 10: Metasearchers Benchmarking

Does it provide an unified search? S S S S S

Does it provide connections to the interfaces of the different resources offered by the library? S S S S S

Does it provide an interface

of simple search? S S S S S

Does

it

provide

an

interface

of advanced

search? S S N S S

One or more Web-based OPAC databases can be searched? S S S S S

Broadcast searching of websites and Internet search engines? S S S S S

Broadcast searching of citations and full-text in databases by keyword? S S S S S

Broadcast searching of all databases by field? S S S S S

Field searching of individual databases? S S S S S

Boolean

searching

? S S S S S

Wildcard

and truncation

searching? S S S N S

Proximity

searching? N N S N S

Results are ranked for relevancy? S N N S S

Results can be limited by any field? P S P P S

Results can be sorted by any field in ascending or descending order? S S P S S

Searching using diacritics [including macrons] is supported? S N S N S

Results returned from different databases can be merged? S S S S S

Results returned from different databases can be de-duplicated? S S S S S

TOTAL PUNCTUATION 66 60 64 58 72

% FULFILLED CRITERIA 91.6% 83.3% 88.8% 80.5% 100%

Section

A. Search

functions

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Page 11: Metasearchers Benchmarking

0

10

20

30

40

50

60

70

MetalibZportalMapSearch SolverSirsi

In the section search functions

all the searchers overcome an acceptable minimum of 58 points on 72. It highlights Sirsi, followed Metalib

and Map. In this aspect all the metasearchers

completes the approaches but interesting:

•Boolean

searching•Wildcard

and truncation

searching•Results

are ranked

for

relevancy•Searching

using

diacritics

(including

macrons) is

supported•Results

returned

can be de-duplicated

Page 12: Metasearchers Benchmarking

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Can the user establish his visualization preferences? S N S S S

Can the user establish his search preferences? S P S S S

Can the user settle down alerts? S F F F S

Can the user create groups of favorite? S N N S S

Search

history

is

recorded? S S P N P

Users can specify fields to include when printing or downloading

results? N N N N S

Users can select which records from search results to print or download? S S S S S

Results can be downloaded to bibliographic software? S F S N P

Users can print to results? S S S S S

TOTAL PUNCTUATION 32 16 23 21 32

% FULFILLED CRITERIA 88.8% 33.3% 63.8% 58.3% 88.8%

Section

B. User

personalisation

functions

Page 13: Metasearchers Benchmarking

0

5

10

15

20

25

30

35

MetalibZportalMapSearch SolverSirsi

In the section User personalisation

functions

the metasearchers

shows remarkable disparities. It highlights Sirsi

and Metalib

(even) followed by Map. Zportal

is shown quite rigid. In this aspect Metalib

completes the approaches but interesting:

•Can the user establish his visualization preferences? •Can the user establish his search preferences?

•Can the user settle down alerts?•Results can be downloaded to bibliographic software?

Page 14: Metasearchers Benchmarking

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Authorisation

based on IP address S S S S S

Authorisation

based on a single user password S S S S S

Authorisation

based on domain name S N S N S

Authorisation

based on LDAP S S S S S

Authorisation

based on proxy server S F S S S

Authorisation

based on Shibbolett S S N N F

TOTAL PUNCTUATION 24 17 20 16 21

% FULFILLED CRITERIA 100% 70.8% 83.3% 66.6% 88.8%

Section

C. Access control functions

Page 15: Metasearchers Benchmarking

In the section Access control functions

the metasearchers

shows remarkable disparities. Metalib

highlights followed by Sirsi. In this aspect Metalib

completes the approaches but interesting:

•Authorisation

based on ip

address •Authorisation

based on to it sails user password •Authorisation

based on domain •Authorisation

based on Shibbolett•Authorisation

based on proxy server

0

5

10

15

20

25

30

35

MetalibZportalMapSearch SolverSirsi

Page 16: Metasearchers Benchmarking

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Z39.50 S S S S S

ERL S S S S S

OpenURL S S S S S

HTTP S S S S S

MARC S S S S S

DOI S S S S S

SQL S S S N S

EAD S P S P S

TEI S S S P N

XML S S S S S

DublinCore S P S P S

Vendor

products

only N P N S S

Other

standards [please

specify] S N S N S

TOTAL PUNCTUATION 48 42 48 34 48

% FULFILLED CRITERIA 92.3% 80.7% 92.3% 65.3% 92.3%

Section

D. Database

communication

protocols

supported

Page 17: Metasearchers Benchmarking

In the section Database communication protocols

supported

the metasearchers

shown enough similarity. It highlights Metalib, Sirsi

and Map. In this aspect all they complete the communication protocols, to exception of Zportal

and Search Solver:

0

10

20

30

40

50

MetalibZportalMapSearch SolverSirsi

Page 18: Metasearchers Benchmarking

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Windows S S S S S

Macintosh N N S N N

Linux S N S N F

Otros Unix S S S S N

Sun Solaris S S S D S

TOTAL PUNCTUATION 16 12 20 8 9

% FULFILLED CRITERIA 80% 60% 100% 40% 45%

Section

E. Platform

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Does the company landlady of the software provide resources preconfigure

(databases, OPACs, etc.)? S S S S S

Is the database modernized periodically by the company landlady of the product? S S N S S

Can the database be enlarged indefinitely in function of the number of available resources? S S S S S

TOTAL PUNCTUATION 12 12 8 12 12

% FULFILLED CRITERIA 100% 100% 66.6% 100% 100%

Section

F. Data base predefined

resources

Page 19: Metasearchers Benchmarking

02468

101214161820

MetalibZportalMapSearch SolverSirsi

Section

E. Platform

0

2

4

6

8

10

12

14

MetalibZportalMapSearch SolverSirsi

Section

F. Data base predefined

resources

Most of the metasearchers

are implemented satisfactorily in the operative but representative systems.

Search Solver and Sirsi

is those but poor in this sense.

In this section every metasearcher

achieves the maximum of punctuation, except for Map that stays above the acceptable minimum.

Page 20: Metasearchers Benchmarking

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Database groups can be defined for specific client groups S S S S S

Default display fields can be set S P S P S

Results displays can be customised S P S P S

The design of user interfaces can be custom S P S S S

Different user interfaces can be created for each client group S N S N S

Different access levels can be assigned for each client group S S S S S

Results can be linked to document delivery services S S F P P

Library name, logos, images and links can be added to interface S S S S S

Interface colour

scheme can be modified S S S S S

Printing and downloading options are simple to find and use S S S S S

Help options are available on every page S S S S S

The software is capable of suspending a potentially long search at a predetermined

point and providing the user with options to narrow or terminate

the

search, examine a portion of the results or continue the search.S P S P S

TOTAL PUNCTUATION 48 36 45 36 46

% FULFILLED CRITERIA 100% 75% 93.7% 75% 95.8%

Section

G. Personalization

platform

Page 21: Metasearchers Benchmarking

05

101520253035404550

MetalibZportalMapSearch SolverSirsi

In the section Personalization platform, all the metasearchers

shown to be sufficiently customizable

Page 22: Metasearchers Benchmarking

Section H. Integration SGB

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Does it allow the integration between the portal and the local SGB? S S S S S

Is information of local funds provided? S N P N S

Does it allow the integration between the portal and external SGB? S P S P S

TOTAL PUNCTUATION 12 6 10 6 12

% FULFILLED CRITERIA 100% 50% 83.3% 50% 100%

02468

101214161820

MetalibZportalMapSearch SolverSirsi

Page 23: Metasearchers Benchmarking

Section I. Delivery of final document

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Does it allow to discharge the final documents in the hard disk of the user's computer? S S S S S

Does it allow to send the final documents by mail electronic? S S S S S

TOTAL PUNCTUATION 8 8 8 8 8

% FULFILLED CRITERIA 100% 100% 100% 100% 100%

0

2

4

6

8

10

MetalibZportalMapSearch SolverSirsi

Page 24: Metasearchers Benchmarking

Section J. Statistics

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Transaction logs and usage statistics can be obtained S S S S S

TOTAL PUNCTUATION 4 4 4 4 4

% FULFILLED CRITERIA 100% 100% 100% 100% 100%

0

2

4

6

8

10

MetalibZportalMapSearch SolverSirsi

Page 25: Metasearchers Benchmarking

Section K. Link resolver

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Does it incorporate a link resolver? S S S S S

TOTAL PUNCTUATION 4 4 4 4 4

% FULFILLED CRITERIA 100% 100% 100% 100% 100%

0

2

4

6

8

10

MetalibZportalMapSearch SolverSirsi

Page 26: Metasearchers Benchmarking

Section L. Vendor support

Metalib

& SFX

ZPor

tal

Map

Search

Solver

Sirsi

Vendor provides installation and initial support S S S S S

The software is provided to libraries for installation N N N S S

Full documentation is included in the price of the product S S S S S

Technical support is readily available S S S S S

Libraries can join a product listserv S N N N N

In-house

training is

provided S S S S S

Other

support

is

provided S S S S S

TOTAL PUNCTUATION 24 20 20 24 24

% FULFILLED CRITERIA 85.7% 71.4% 71.4% 85.7 85.7%

0

5

10

15

20

25

30

MetalibZportalMapSearch SolverSirsi

Page 27: Metasearchers Benchmarking

Representing all the sections with the computation of their items, the results is the following global graph of the “Agree”

or evaluation insole

Total results

300

237

280

231

294

0

50

100

150

200

250

300

MetalibZportalMapSearch SolverSirsi

Metalib

adds 300 points and below him Sirsi

with 294

Map is located in 280

points followed by ZPortal

with 237 and Search Solver with 231

Page 28: Metasearchers Benchmarking

To conclude, we outlined a practical series of 10 suppositions that replied in the five metasearchers

(MetaLib, ZPortal, MAP, SearchSolver, Sirsi), to evaluate the behavior of each one of them.

Two databases were selected from the meta finding resources:

• MEDLINE

ISI PROCEEDINGS

and a portal of electronic magazines:

SCIENCE DIRECT

The searches are very closed, that is to say, very sensitive and

precise, for what you/they throw small results that we browsed, to try to evaluate the relevance of the same ones and to determine the quality and exahustiveness

of the metasearchers.

Of all the thrown searches, we will illustrate this final phase of the comparative one with the following example:

7. Comparative starting from a practical supposition

Page 29: Metasearchers Benchmarking

A clinical has a patient, 24 year-old woman. A hairdresser that presents numerous episodes of different migraine intensity from the 14 years, beginning retroocular, unilateral localization (varying in the different crises), pulsatil, associated to nauseate and vomits, of 24-48 hours of duration. To alleviate the pain she uses paracetamol, but the answer to the same one it is scarce, improving fundamentally with dream and rest.

After normal physical and neurological exploration. Analytic and

cranial TC without discoveries worthy of mention, he take the decision to put a treatment prophylaxis migraine, but he has doubts between the use of the flunarizine

or a beta blockers (propanolol).

For he requests it articles that help you in their clinical decision, where results of preventive treatments are evaluated with the employment of the two active principles.

Search equation:

Migraine

AND (flunarizine

AND betablockers)

The results of the behavior of each one of them, with the same search equation are reflected in the following chart.

Practical supposition

Page 30: Metasearchers Benchmarking

1 Hoffmann, J Treatment of migraine 2007 MEDLINE X ¤ ¤ ¤ ¤ ¤

2 Pharmacological prevention of migraine: to be considered case by case.

2006 MEDLINE X ¤ ¤ ¤ ¤ ¤

3 Members of the task force:

EFNS guideline on the drug treatment of migraine - report of an EFNS task force.

2006 MEDLINE X ¤ ¤ ¤ ¤ ¤

4 Evers, S Treatment of idiopathic headache in childhood - recommendations of the German Migraine and Headache Society (DMKG)

2002 MEDLINE X ¤ ¤ ¤ ¤ ¤

5 Massiou, H Prophylactic treatments of migraine 2000 MEDLINE X ¤ ¤ ¤ ¤ ¤

COMPARATIVE IN OTHER RESOURCES

6 Massiou, H Prophylactic treatments of migraine. 2000 ISI Proceedings ¤

7 Diener, H.C. Important advances in headache 2004 Science Direct ¤ ¤ ¤

8 Schoenen, J. Evoked potentials and transcranial magnetic stimulation in migraine: published data and viewpoint on their...

2003 Science Direct ¤ ¤ ¤

9 Kihara, M. The potency of migraine prophylaxis with nilvadipine: eight cases reported with further consideration

2001 Science Direct ¤ ¤ ¤

10 Adelman, J.U. Current options for the prevention and treatment of migraine 2001 Science Direct ¤ ¤ ¤

Author

Títle

Year

Resource

PUBMED

M E T A L I B

Z P O R T A L

S SE OA LR VC EH R

S IRSI

M A P

Table 1

Page 31: Metasearchers Benchmarking

To bird view, all respond well. Above 80% of satisfaction. In a resource Z39.50 (Medline), the metasearchers

implements the search equation appropriately and they coincide in 100% with the results that it throws the native source with the same interrogation syntax.

The differences begin to be evident in those resources where it is necessary the use of a gateway.

The design of the same one and the characteristics of the operation of the motor of search of each metasearcher, they determine the quality of the obtained results.

They notably highlight low this shade, MetaLib, MAP and Sirsi, to the being the only ones which return registrations in the resources ISI Proceedings and Science Direct.

It is necessary to highlight that MAP, not only returns 4 references of Science Direct of the table 1, but rather it also recovers, 6 references from the same portal of magazines:

Results

1. Prophylactic activity of increasing doses of intravenous histamine in refractory igraine: Retrospective observations of a series of patients with migraine without aura. Current Therapeutic Research, Volume 65, Issue 1, January-February 2004, Pages 70-78

Umberto Pietrini, Massimo De Luca, Enrico Del Bene, Francesco De Cesaris, Luca Bertinotti, Nicola Colangelo and Alberto Moggi Pignone

2. Behavioral and prophylactic pharmacological intervention studies of pediatric migraine: an exploratory meta-analysis. Pain, Volume 60, Issue 3, March 1995, Pages 239-255

Christiane Hermann, Mirihae Kim and Edward B. Blanchard

3. Pharmacological versus non-pharmacological prophylaxis of recurrent migraine headache: a meta-analytic review of clinical trials. Pain, Volume 42, Issue 1, July 1990, Pages 1-13

Kenneth A. Holroyd and Donald B. Penzien

4. Rapid method for estimating the risk of acutely controversial side effects of prescription drugs. Journal of Clinical Epidemiology, Volume 43, Issue 5, 1990, Pages 433-439

Hans Petri, Hubert Leufkens, Jack Naus, Reinhilde Silkens, Paulien Van Hessen and John Urquhart

5. Choice of antihypertensive drug therapy. American Heart Journal, Volume 114, Issue 4, Part 2, October 1987, Pages 1030-1040

B. N. C. Prichard and B. Tomlinson

6. MIGRAINE. The Lancet, Volume 326, Issue 8447, 20 July 1985, Pages 167-168. Peter Kandela

Page 32: Metasearchers Benchmarking

In these 6 references of MAP, it is not completed the search equation thoroughly, not appearing in none of them the word “flunarizine”, but if “migraine”

and “betablockers.”

The idiosyncrasy of each metasearcher

basically obeys two shades:

The quality, rigor and bring up to date of the gangplanks

The algorithms that each metasearcherr

implements automatically in the meta findings.

the graph shows the quality and relevance of answer of the metasearchers:

0102030405060708090

100

MetaLibZPortalMAPSearchSolverSirsi

10

5

16

5

9

0

2

4

6

8

10

12

14

16

MetaLibZPortalMAPSearchSolverSirsi

As for the quantity of returned references:

Page 33: Metasearchers Benchmarking

8.

Conclusions

Metalib

Sirsi

Map

ZPortal

SearchSolve

r

Page 34: Metasearchers Benchmarking

8. ConclusionsThe great quantity of information and the notable increase of databases ends in the necessity of carrying out simultaneous consultations with a single strategy (query). Of this necessity those denominated arise “metasearchers”

The results of the search can be satisfactory or not so much. The metasearchers

offers very different results before oneself initial question; this fact demonstrates the little exhaustive(8)

and it shows the derived problems of the shortage of linguistic control

At the moment one pleads for the incorporation of tools of linguistic analysis and terminological control in the metasearchers, so that it is possible to make a less bound recovery to the comparison of character chains and more linked to the comparison

of concepts

The metasearchers

allows to carry out a first exploratión(9)

on a topic and to locate the information of available interest quickly in different databases

(8) Murray R. La National Library for Health del Reino Unido usa un nuevo motor de búsqueda. El profesional de la información 2006;15(1):49-52.

(9) Metafind. ESADE 2008 Consult 02-02-08. Available from: http://www.esade.edu/biblio/metafindabout.html

Page 35: Metasearchers Benchmarking

It will be useful when:

•I don't know in what database to begin to look for •I want to have a panoramic of the different available types of information •I want to determine what database it contains more information on a topic •I want to make a quick and simple search •I want to make sure of not forgetting any possible resource of interest •I want to find an article that I don't remember in what database

it is available

It is necessary to keep in mind that, depending on the objective

of our search, the metasearchers

cannot be the best option because:

•It doesn't look for in all the available resources (only in a selection) •It cannot offer the same prestations(10)

of advanced search that the databases, since it doesn't seek to

substitute the sophisticated search that can be carried out in each one of the native sources •The search for subject(11)

in many cases it is not sufficiently precise(8;9)

(it cannot use the thesauruses of each database)

(8) Murray R. La National Library for Health del Reino Unido usa un nuevo motor de búsqueda. El profesional de la información 2006;15(1):49-52.

(9) Metafind. ESADE 2008 Consult 02-02-08. Available from: http://www.esade.edu/biblio/metafindabout.html

(10) Silió T. Fundamentos tecnológicos del acceso abierto: OpenArchives Initiativey Open Archival Information System. El profesional de la información 2005;14(5):365-80.

(11) Weibel S, Koch T. The Dublin Core Metadata Initiative: mission, current activities, and future directions. D-lib magazine 2000;6(12):1-10.

Page 36: Metasearchers Benchmarking

They should not be used as tool for the investigation in depth. To obtain the best result the most advisable thing it is to look for in the different databases for

separate, the sophisticated search options that they offer taking advantage.

The handling and control of the existent digital information at the present time, it has generated new challenges and problems(12)

that require to be treated and solved:

Quality and relevancy in the recovery of information. the initiative of files open search to create a great system of universal scientific knowledge, with the meta date of all the existent academic information.

Editorial vs

open access. He concentrates on the facilities for the diffusion and the accessibility of the scientific information through Internet. The access initiative open of Budapest (Budapest Open Access Initiative), it is the first link that looks for to liberate all the contents and to leave them you liberate within reach of the humanity.

Interaction among systems of information. The metasearchers

should of to be compatible in a great systems(13)

through the communication protocols, (Z39.50, open Norms, OAI-PMH, SRW/SRU, http, MARC, DOI, SQL, EAD, TEI, XML, Dublin Core, etc..).

(12) Arango de V. ME. El Z39.50 en el ambiente de transferencia y recuperación de información. Revista Interamericana de Nuevas Tecnologías de la Información 2000;5(1):18-24.

(13)Gomez Dueñas LF, Correa M. AT. Metabúsqueda: integrando colecciones y mejorando la difusión. XII Jornadas de actualización en bibliotecas médicas 2005. Consult 22-12-07. Available from: http://eprints.rclis.org/archive/00004849/02/ponencia_unirecs.pdf

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Of the five evaluated metasearchers, Metalib

next to Sirsi, seems a good option. They highlight the clarity of their interface, the relevance and exahustiveness

of their results and the possibilities of handlings of these. Map, is the third better option. ZPortal

and Search Solver stays above the acceptable minima for a metasearcher

Anything they serve the interoperability, the meta data, the metasearchers, the agents of connections, the technology able to summarize, of index and of processing natural language, if there is not quality in the information

It is not enough with “everything”

is accessible, but rather it is necessary that it is accessible

“all that I need and only that”

in a certain moment. One can say that one of the big impediments of the OA (Open Access) it will be the overabundance of information, and he leaves in detriment of the metasearchers.

To offer scientific information doesn't only consists on giving open access, but in giving pertinent open access (pertinent open access, POA)

Editors and suppliers of information need to be but informed on the implications of the libraries in the library portals, to evolve all together and to obtain metasearchers

but precise: this is the great challenge, don't they seem…?

Page 38: Metasearchers Benchmarking

Thank you for their attention!

José Mª Carrión Pérez

Andalusian Public Health System Virtual Library