James A Thom | RMIT University (original) (raw)

Papers by James A Thom

Research paper thumbnail of The ELF data model and SGQL query language for structured document databases

Page 1. The ELF data model and SGQL query language for structured document databases ... The ELF ... more Page 1. The ELF data model and SGQL query language for structured document databases ... The ELF ELements with Features model uses the SGML grammar DTD directly as a schema avoiding transformations which can lose informa-tion. ...

Research paper thumbnail of HiXEval: Highlighting XML Retrieval Evaluation

Lecture Notes in Computer Science, 2006

This paper describes our proposal for an evaluation metric for XML retrieval that is solely based... more This paper describes our proposal for an evaluation metric for XML retrieval that is solely based on the highlighted text. We support our decision of ignoring the exhaustivity dimension by undertaking a critical investigation of the two INEX 2005 relevance dimensions. We present a fine grained empirical analysis of the level of assessor agreement of the five topics double-judged at INEX 2005, and show that the agreement is higher for specificity than for exhaustivity. We use the proposed metric to evaluate the INEX 2005 runs for each retrieval strategy of the CO and CAS retrieval tasks. A correlation analysis of the rank orderings obtained by the new metric and two XCG metrics shows that the orderings are strongly correlated, which demonstrates the usefulness of the proposed metric for evaluation of XML retrieval performance.

Research paper thumbnail of Analysing User Access To An Online Newspaper

Proceedings of the 2014 Australasian Document Computing Symposium, Nov 26, 2014

Research paper thumbnail of Multiple Example Queries in Content-Based Image Retrieval

Lecture Notes in Computer Science, 2002

Abstract. Content-Based Image Retrieval (cbir) is the practical class of techniques used for info... more Abstract. Content-Based Image Retrieval (cbir) is the practical class of techniques used for information retrieval from large image collections. Many cbir systems allow users to specify their information need by pro-viding an example image. This query-by-example paradigm can be ex- ...

Research paper thumbnail of Are two pictures better than one?

Proceedings 12th Australasian Database Conference. ADC 2001, 2001

A major hurdle in practical Content-Based Image Retrieval (CBIR) is conveying the user&am... more A major hurdle in practical Content-Based Image Retrieval (CBIR) is conveying the user's information need to the system. One common method of query specification is to express the query using one or more example images. In this work, we consider whether using more examples improves the effectiveness of CBIR in meeting a user's information need. We show that using multiple

Research paper thumbnail of The mu-prolog deductive database

Research paper thumbnail of Nu-prolog reference manual

Research paper thumbnail of Privacy Legislation and the Right of Access

Research paper thumbnail of Challenges Facing the Retrieval and Reuse of Learning Objects

Research paper thumbnail of TQL: a nested relational query language

Australian Computer Journal

Google, Inc. (search). ...

Research paper thumbnail of Indexing Structured Text for Queries on Containment Relationships

Research paper thumbnail of Efficiency of Nested Relational Document Database Systems

Systems designed for efficient retrieval of conventional data can be very inefficient at retrievi... more Systems designed for efficient retrieval of conventional data can be very inefficient at retrieving documents. Documents have more complex structure than conventional data, and the kinds of queries made to document databases are unlike those made to conventional databases. This paper discusses how document storage and retrieval can be effectively supported in a nested relational database system with signature file indexing, and gives a detailed analysis of the space requirements and retrieval times of different document schemas in such a database system.

Research paper thumbnail of An architecture for hyperbase systems

Research paper thumbnail of Querying in a Large Hyperbase

Research paper thumbnail of Information Models for Document Engineering

Research paper thumbnail of Studying the Evolution of XML Document Structures

Research paper thumbnail of XML-Search Query Language: Needs and Requirements

This paper explores the needs of XML-search and makes comparisons between the INEX experience in ... more This paper explores the needs of XML-search and makes comparisons between the INEX experience in evaluating XML retrieval and the recently proposed W3C requirements for extending XQuery and XPath to handle full-text retrieval. Our experience in INEX gave insight into some ...

Research paper thumbnail of Indexing Documents for Queries on Structure, Content and Attributes

CiteSeerX - Document Details (Isaac Councill, Lee Giles): Indexing and retrieval techniques for l... more CiteSeerX - Document Details (Isaac Councill, Lee Giles): Indexing and retrieval techniques for large text databases are well developed, but most of the techniques developed to date assume that the text to be indexed has little or no structure. With the growth in the use of sophisticated ...

Research paper thumbnail of The ELF Data Model and SCGL Query Language for Structured Document Databases

Adatamodel and query language for accessing structureddocuments expressed in SGML is presented.Th... more Adatamodel and query language for accessing structureddocuments expressed in SGML is presented.The ELF #ELements with Features# model usesthe SGML grammar #DTD# directly as a schemaavoiding transformations which can lose information.The model also gives #exibility to the implementorto retrieve whole documents and decomposethem, retrieve atomic elements and recombinethem, or pursue alternatives which retrieve the elementsdirectly. The language, Structured General-ized Query Language...

Research paper thumbnail of Evaluating Focused Retrieval Tasks

Page 38. Evaluating Focused Retrieval Tasks Jovan Pehcevski AxIS project team INRIA-Rocquencourt,... more Page 38. Evaluating Focused Retrieval Tasks Jovan Pehcevski AxIS project team INRIA-Rocquencourt, Le Chesnay, France jovan. pehcevski@ inria. fr James A. Thom ∗ School of Computer Science and IT RMIT University, Melbourne, Australia james. thom@ rmit. edu. ...

Research paper thumbnail of The ELF data model and SGQL query language for structured document databases

Page 1. The ELF data model and SGQL query language for structured document databases ... The ELF ... more Page 1. The ELF data model and SGQL query language for structured document databases ... The ELF ELements with Features model uses the SGML grammar DTD directly as a schema avoiding transformations which can lose informa-tion. ...

Research paper thumbnail of HiXEval: Highlighting XML Retrieval Evaluation

Lecture Notes in Computer Science, 2006

This paper describes our proposal for an evaluation metric for XML retrieval that is solely based... more This paper describes our proposal for an evaluation metric for XML retrieval that is solely based on the highlighted text. We support our decision of ignoring the exhaustivity dimension by undertaking a critical investigation of the two INEX 2005 relevance dimensions. We present a fine grained empirical analysis of the level of assessor agreement of the five topics double-judged at INEX 2005, and show that the agreement is higher for specificity than for exhaustivity. We use the proposed metric to evaluate the INEX 2005 runs for each retrieval strategy of the CO and CAS retrieval tasks. A correlation analysis of the rank orderings obtained by the new metric and two XCG metrics shows that the orderings are strongly correlated, which demonstrates the usefulness of the proposed metric for evaluation of XML retrieval performance.

Research paper thumbnail of Analysing User Access To An Online Newspaper

Proceedings of the 2014 Australasian Document Computing Symposium, Nov 26, 2014

Research paper thumbnail of Multiple Example Queries in Content-Based Image Retrieval

Lecture Notes in Computer Science, 2002

Abstract. Content-Based Image Retrieval (cbir) is the practical class of techniques used for info... more Abstract. Content-Based Image Retrieval (cbir) is the practical class of techniques used for information retrieval from large image collections. Many cbir systems allow users to specify their information need by pro-viding an example image. This query-by-example paradigm can be ex- ...

Research paper thumbnail of Are two pictures better than one?

Proceedings 12th Australasian Database Conference. ADC 2001, 2001

A major hurdle in practical Content-Based Image Retrieval (CBIR) is conveying the user&am... more A major hurdle in practical Content-Based Image Retrieval (CBIR) is conveying the user's information need to the system. One common method of query specification is to express the query using one or more example images. In this work, we consider whether using more examples improves the effectiveness of CBIR in meeting a user's information need. We show that using multiple

Research paper thumbnail of The mu-prolog deductive database

Research paper thumbnail of Nu-prolog reference manual

Research paper thumbnail of Privacy Legislation and the Right of Access

Research paper thumbnail of Challenges Facing the Retrieval and Reuse of Learning Objects

Research paper thumbnail of TQL: a nested relational query language

Australian Computer Journal

Google, Inc. (search). ...

Research paper thumbnail of Indexing Structured Text for Queries on Containment Relationships

Research paper thumbnail of Efficiency of Nested Relational Document Database Systems

Systems designed for efficient retrieval of conventional data can be very inefficient at retrievi... more Systems designed for efficient retrieval of conventional data can be very inefficient at retrieving documents. Documents have more complex structure than conventional data, and the kinds of queries made to document databases are unlike those made to conventional databases. This paper discusses how document storage and retrieval can be effectively supported in a nested relational database system with signature file indexing, and gives a detailed analysis of the space requirements and retrieval times of different document schemas in such a database system.

Research paper thumbnail of An architecture for hyperbase systems

Research paper thumbnail of Querying in a Large Hyperbase

Research paper thumbnail of Information Models for Document Engineering

Research paper thumbnail of Studying the Evolution of XML Document Structures

Research paper thumbnail of XML-Search Query Language: Needs and Requirements

This paper explores the needs of XML-search and makes comparisons between the INEX experience in ... more This paper explores the needs of XML-search and makes comparisons between the INEX experience in evaluating XML retrieval and the recently proposed W3C requirements for extending XQuery and XPath to handle full-text retrieval. Our experience in INEX gave insight into some ...

Research paper thumbnail of Indexing Documents for Queries on Structure, Content and Attributes

CiteSeerX - Document Details (Isaac Councill, Lee Giles): Indexing and retrieval techniques for l... more CiteSeerX - Document Details (Isaac Councill, Lee Giles): Indexing and retrieval techniques for large text databases are well developed, but most of the techniques developed to date assume that the text to be indexed has little or no structure. With the growth in the use of sophisticated ...

Research paper thumbnail of The ELF Data Model and SCGL Query Language for Structured Document Databases

Adatamodel and query language for accessing structureddocuments expressed in SGML is presented.Th... more Adatamodel and query language for accessing structureddocuments expressed in SGML is presented.The ELF #ELements with Features# model usesthe SGML grammar #DTD# directly as a schemaavoiding transformations which can lose information.The model also gives #exibility to the implementorto retrieve whole documents and decomposethem, retrieve atomic elements and recombinethem, or pursue alternatives which retrieve the elementsdirectly. The language, Structured General-ized Query Language...

Research paper thumbnail of Evaluating Focused Retrieval Tasks

Page 38. Evaluating Focused Retrieval Tasks Jovan Pehcevski AxIS project team INRIA-Rocquencourt,... more Page 38. Evaluating Focused Retrieval Tasks Jovan Pehcevski AxIS project team INRIA-Rocquencourt, Le Chesnay, France jovan. pehcevski@ inria. fr James A. Thom ∗ School of Computer Science and IT RMIT University, Melbourne, Australia james. thom@ rmit. edu. ...