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References Navigation arrow Authors Navigation arrow Alberto H. F. Laender
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Alberto H. F. Laender

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Publications by Alberto H. F. Laender (bibliography)

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» 2009 «

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Menezes, Guilherme Vale, Ziviani, Nivio, Laender, Alberto H. F. and Almeida, Virgilio (2009): A geographical analysis of knowledge production in computer science. In: Proceedings of the 2009 International Conference on the World Wide Web 2009. pp. 1041-1050. Available online

“We analyze knowledge production in Computer Science by means of coauthorship networks. For this, we consider 30 graduate programs of different regions of the world, being 8 programs in Brazil, 16 in North America (3 in Canada and 13 in the United States), and 6 in Europe (2 in France, 1 in Switzerland and 3 in the United Kingdom). We use a dataset that consists of 176,537 authors and 352,766 publication entries distributed among 2,176 publication venues. The results obtained for different metrics of collaboration social networks indicate the process of knowledge creation has changed differently for each region. Research is increasingly done in teams across different fields of Computer Science. The size of the giant component indicates the existence of isolated collaboration groups in the European network, contrasting to the degree of connectivity found in the Brazilian and North-American counterparts. We also analyzed the temporal evolution of the social networks representing the three regions. The number of authors per paper experienced an increase in a time span of 12 years. We observe that the number of collaborations between authors grows faster than the number of authors, benefiting from the existing network structure. The temporal evolution shows differences between well-established fields, such as Databases and Computer Architecture, and emerging fields, like Bioinformatics and Geoinformatics. The patterns of collaboration analyzed in this paper contribute to an overall understanding of Computer Science research in different geographical regions that could not be achieved without the use of complex networks and a large publication database.”

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» 2008 «

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Pereira, Denilson Alves, Ribeiro-Neto, Berthier A., Ziviani, Nivio and Laender, Alberto H. F. (2008): Using web information for creating publication venue authority files. In: JCDL08 Proceedings of the 8th ACM/IEEE-CS Joint Conference on Digital Libraries 2008. pp. 295-304. Available online

“Citations to publication venues in the form of journal, conference and workshop contain spelling variants, acronyms, abbreviated forms and misspellings, all of which make more difficult to retrieve the item of interest. The task of discovering and reconciling these variant forms of bibliographic references is known as authority work. The key goal is to create the so called authority files, which maintain, for any given bibliographic item, a list of variant labels (i.e., variant strings) used as a reference to it. In this paper we propose to use information available on the Web to create high quality publication venue authority files. Our idea is to recognize (and extract) references to publication venues in the text snippets of the answers returned by a search engine. References to a same publication venue are then reconciled in an authority file. Each entry in this file is composed of a canonical name for the venue, an acronym, the venue type (i.e., journal, conference, or workshop), and a mapping to various forms of writing its name in bibliographic citations. Experimental results show that our Web-based method for creating authority files is superior to previous work based on straight string matching techniques. Considering the average precision in finding correct venue canonical names, we observe gains up to 41.7%.”

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» 2007 «

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Silva, Mario J., Laender, Alberto H. F., Baeza-Yates, Ricardo A., McGuinness, Deborah L., Olstad, Bjørn, Olsen, Øystein Haug and Falcão, André O. (eds.) Proceedings of the Sixteenth ACM Conference on Information and Knowledge Management - CIKM 2007 November 6-10, 2007, Lisbon, Portugal.

» 2006 «

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Carvalho, Moises G. de, Goncalves, Marcos Andre, Laender, Alberto H. F. and Silva, Altigran S. da (2006): Learning to deduplicate. In: JCDL06: Proceedings of the 6th ACM/IEEE-CS Joint Conference on Digital Libraries 2006. pp. 41-50. Available online

“Identifying record replicas in Digital Libraries and other types of digital repositories is fundamental to improve the quality of their content and services as well as to yield eventual sharing efforts. Several deduplication strategies are available, but most of them rely on manually chosen settings to combine evidence used to identify records as being replicas. In this paper, we present the results of experiments we have carried out with a novel Machine Learning approach we have proposed for the deduplication problem. This approach, based on Genetic Programming (GP), is able to automatically generate similarity functions to identify record replicas in a given repository. The generated similarity functions properly combine and weight the best evidence available among the record fields in order to tell when two distinct records represent the same real-world entity. The results of the experiments show that our approach outperforms the baseline method by Fellegi and Sunter by more than 12% when identifying replicas in a data set containing researcher's personal”

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Freitas-Junior, Hermes R., Ribeiro-Neto, Berthier A., Vale, Rodrigo de Freitas, Laender, Alberto H. F. and Lima, Luciano R. S. de (2006): Categorization-driven cross-language retrieval of medical information. In JASIST - Journal of the American Society for Information Science and Technology, 57 (4) pp. 501-510

» 2005 «

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Silva, Lena Veiga e, Laender, Alberto H. F. and Goncalves, Marcos Andre (2005): A usability evaluation study of a digital library self-archiving service. In: JCDL05: Proceedings of the 5th ACM/IEEE-CS Joint Conference on Digital Libraries 2005. pp. 176-177. Available online

“In this paper 1, we describe an evaluation study of a self-archiving service for the Brazilian Digital Library of Computing (BDBComp). We conducted an extensive usability experiment with several potential users, including graduate students, professors, and archivists/librarians. The results of the study are described and analyzed, following sound statistical principles.”

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» 2004 «

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Laender, Alberto H. F., Gonzalves, Marcos Andre and Roberto, Pablo A. (2004): BDBComp: building a digital library for the Brazilian computer science community. In: JCDL04: Proceedings of the 4th ACM/IEEE-CS Joint Conference on Digital Libraries 2004. pp. 23-24. Available online

“This paper reports initial efforts towards building BDBComp, a digital library for the Brazilian computer science community BDBComp is based on a number of standards (e.g., OAI, Dublin Core, SQL) as well as on new technologies (e.g., Web data extraction tools), which allowed fast and easy prototyping. The paper focuses on architectural issues and specific challenges faced during the construction of this digital library as well as on proposed solutions.”

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Goncalves, Marcos Andre, Fox, Edward A., Krowne, Aaron, Calado, Pavel, Laender, Alberto H. F., Silva, Altigran S. da and Ribeiro-Neto, Berthier A. (2004): The effectiveness of automatically structured queries in digital libraries. In: JCDL04: Proceedings of the 4th ACM/IEEE-CS Joint Conference on Digital Libraries 2004. pp. 98-107. Available online

“Structured or fielded metadata is the basis for many digital library services, including searching and browsing. Yet, little is known about the impact of using structure on the effectiveness of such services. In this paper, we investigate a key research question: do structured queries improve effectiveness in DL searching? To answer this question, we empirically compared the use of unstructured queries to the use of structured queries. We then tested the capability of a simple Bayesian network system, built on top of a DL retrieval engine, to infer the best structured queries from the keywords entered by the user. Experiments performed with 20 subjects working with a DL containing a large collection of computer science literature clearly indicate that structured queries, either manually constructed or automatically generated, perform better than their unstructured counterparts, in the majority of cases. Also, automatic structuring of queries appears to be an effective and viable alternative to manual structuring that may significantly reduce the burden on users.”

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» 2003 «

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Calado, Pavel P., Goncalves, Marcos A., Fox, Edward A., Ribeiro-Neto, Berthier A., Laender, Alberto H. F., Silva, Altigran S. da, Reis, Davi C., Roberto, Pablo A., Vieira, Monique V. and Lage, Juliano P. (2003): The Web-DL environment for building digital libraries from the Web. In: JCDL03: Proceedings of the 3rd ACM/IEEE-CS Joint Conference on Digital Libraries 2003. pp. 346-357. Available online

“The Web contains a huge volume of unstructured data, which is difficult to manage. In digital libraries, on the other hand, information is explicitly organized, described, and managed. Community-oriented services are built to attend specific information needs and tasks. In this paper, we describe an environment, Web-DL, that allows the construction of digital libraries from the Web. The Web-DL environment will allow us to collect data from the Web, standardize it, and publish it through a digital library system. It provides support to services and organizational structure normally available in digital libraries, but benefiting from the breadth of the Web contents. We experimented with applying the Web-DL environment to the Networked Digital Library of Theses and Dissertations (NDLTD), thus demonstrating that the rapid construction of DLs from the Web is possible. Also, Web-DL provides an alternative as a largescale solution for interoperability between independent digital libraries.”

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» 2002 «

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Vieira, Rodrigo C., Calado, Pavel, Silva, Altigran S. da, Laender, Alberto H. F. and Ribeiro-Neto, Berthier A. (2002): Structuring keyword-based queries for web databases. In: JCDL02: Proceedings of the 2nd ACM/IEEE-CS Joint Conference on Digital Libraries 2002. pp. 94-95. Available online

“This paper describes a framework, based on Bayesian belief networks, for querying Web databases using keywords only. According to this framework, the user inputs a query through a simple search-box. From the input query, one or more plausible structured queries are derived and submitted to Web databases. The results are then retrieved and presented to the user as ranked answers. To evaluate our framework, an experiment using 38 example queries was carried out. We found out that 97% of the time, one of the top three resulting structured queries is the proper one. Further, when the user selects one of these three top queries for processing, the ranked answers present average precision figures of 92%.”

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Calado, Pavel, Silva, Altigran Soares da, Ribeiro-Neto, Berthier A., Laender, Alberto H. F., Lage, Juliano Palmieri, Reis, Davi de Castro, Roberto, Pablo A., Vieira, Monique V., Goncalves, Marcos Andre and Fox, Edward A. (2002): Web-DL: an experience in building digital libraries from the web. In: Proceedings of the 2002 ACM CIKM International Conference on Information and Knowledge Management November 4-9, 2002, McLean, VA, USA. pp. 675-677. Available online

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Calado, Pavel, Silva, Altigran Soares da, Vieira, Rodrigo C., Laender, Alberto H. F. and Ribeiro-Neto, Berthier A. (2002): Searching web databases by structuring keyword-based queries. In: Proceedings of the 2002 ACM CIKM International Conference on Information and Knowledge Management November 4-9, 2002, McLean, VA, USA. pp. 26-33. Available online

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Laender, Alberto H. F., Silva, Altigran Soares da, Golgher, Paulo Braz, Ribeiro-Neto, Berthier A., Filha, Irna M. R. Evangelista and Magalhães, Karine V. (2002): The Debye Environment for Web Data Management. In IEEE Internet Computing, 6 (4) pp. 60-69

» 2001 «

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Golgher, Paulo Braz, Silva, Altigran Soares da, Laender, Alberto H. F. and Ribeiro-Neto, Berthier A. (2001): Bootstrapping for Example-Based Data Extraction. In: Proceedings of the 2001 ACM CIKM International Conference on Information and Knowledge Management November 5-10, 2001, Atlanta, Georgia, USA. pp. 371-378. Available online

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Ribeiro-Neto, Berthier A., Laender, Alberto H. F. and Lima, Luciano R. S. de (2001): An experimental study in automatically categorizing medical documents. In JASIST - Journal of the American Society for Information Science and Technology, 52 (5) pp. 391-401

» 1999 «

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Ribeiro-Neto, Berthier A., Laender, Alberto H. F. and Silva, Altigran Soares da (1999): Extracting Semi-Structured Data Through Examples. In: Proceedings of the 1999 ACM CIKM International Conference on Information and Knowledge Management November 2-6, 1999, Kansas City, Missouri, USA. pp. 94-101. Available online

» 1998 «

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Lima, Luciano R. S. de, Laender, Alberto H. F. and Ribeiro-Neto, Berthier A. (1998): A Hierarchical Approach to the Automatic Categorization of Medical Documents. In: Gardarin, Georges, French, James C. and Pissinou, Niki (eds.) Proceedings of the 1998 ACM CIKM International Conference on Information and Knowledge Management November 3-7, 1998, Bethesda, Maryland, USA. pp. 132-139. Available online

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Publication statistics

Publication period:1998-2009
Publication count:17
Number of co-authors:35



Productive colleagues

Alberto H. F. Laender's 3 most productive colleagues in number of publications:

Edward A. Fox:92
Berthier A. Ribeiro-..:32
Marcos Andre Goncalves:27


Collaboration count

Number of publications with 3 favourite co-authors:

Berthier A. Ribeiro..:12
Altigran Soares da ..:5
Marcos Andre Goncalves:4

 

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Mar 20

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24 ”

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