Papers by Abdullah Al-Hamdani
Querying web metadata: Native score management and text support in databases
ACM Transactions on Database Systems, 2004
In this article, we discuss the issues involved in adding a native score management system to obj... more In this article, we discuss the issues involved in adding a native score management system to object-relational databases, to be used in querying Web metadata (that describes the semantic content of Web resources). The Web metadata model is based on topics (representing ...
IEEE Data(base) Engineering Bulletin, 2005
Existing publication similarity measures, needed for example-based searching, fall into two class... more Existing publication similarity measures, needed for example-based searching, fall into two classes, namely, text-based similarity measures from Information Retrieval, and citation-based similarity measures based on bibliographic coupling and/or co-citation.
Multimedia Tools and Applications, 2000
A multimedia presentation is a synchronized, and possibly interactive, delivery of multimedia dat... more A multimedia presentation is a synchronized, and possibly interactive, delivery of multimedia data to users. We expect that, in the future, multimedia presentations will be stored into and queried from multimedia databases. In an earlier work, we have designed a graphical query language, called GVISUAL, that allows users to query multimedia presentations based on content information. In this paper, we discuss GVISUAL query processing techniques for multimedia presentations. More specifically, we discuss the translation of GVISUAL queries into an operator-based language, called O-Algebra, with three new operators, and efficient implementations of the new O-Algebra operators using a coding system called nodecodes.
Digital libraries do not assign importance/relevance scores to their publications, authors, or pu... more Digital libraries do not assign importance/relevance scores to their publications, authors, or publication venues, even though scores are potentially useful for (a) providing comparative assessment, or “importances”, of publications, authors, publication venues, (b) ranking publications returned in search outputs, and (c) using scores in locating similar publications. Using social networks and bibliometrics, one can define several score functions.
Using functions in various forms, recent database publications have assigned "scores", "preferenc... more Using functions in various forms, recent database publications have assigned "scores", "preference values", and "probabilistic values" to object-relational database tuples. We generalize these functions and their evaluations as sideway functions and sideway values, respectively. Sideway values represent the advices (recommendations) of data creators or preferences of users, and are employed for the purposes of ranking query outputs and limiting output sizes during query evaluation as well as for application-dependent querying.
Multimedia Tools and Applications, 2000
Multimedia presentations are stored into and queried from multimedia databases. In an earlier wor... more Multimedia presentations are stored into and queried from multimedia databases. In an earlier work, we have designed a graphical query language, called GVISUAL, that allows users to query multimedia presentations based o n c ontent information. In this paper, we discuss GVISUAL query processing techniques for multimedia presentations. More s p e ci cally, we discuss the translation of GVISUAL queries into an operator-based language, called O-Algebra, with three new operators, and e cient implementations of the new O-Algebra o p erators using a coding system called n o decode system.
This paper discusses algorithms for topic selection queries, designed to query a database contain... more This paper discusses algorithms for topic selection queries, designed to query a database containing metadata about web information resources. The metadata database contains topics and relationships, called metalinks, about topics. Topics in the database contain associated importance scores.
In a time span of twelve years, the World Wide Web--only a computer and an internet connection aw... more In a time span of twelve years, the World Wide Web--only a computer and an internet connection away from anybody anywhere, and with abundant, diverse and sometimes incorrect, redundant, spam, and bad information--has become the major information repository for the masses and the world. The web is becoming all things to all people, totally oblivious to nation/country/continent boundaries, promising mostly free information to all, and quickly growing into a repository in all languages and all cultures. With large digital libraries and increasingly significant educational resources, the web is becoming an equalizer, a balancing force, and an opportunity for all, especially for underdeveloped/developing countries. The web is both exciting and overwhelming, changing the way the world communicates, from the way businesses are conducted to the way masses are educated, from the way research is performed to the way research results are disseminated. It is fair to say that the web will only get more diverse, larger and more chaotic in the near future.
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Papers by Abdullah Al-Hamdani