Diana Santos

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Diana Santos is an author.


Only those publications related to wikis are shown here.
Title Keyword(s) Published in Language DateThis property is a special property in this wiki. Abstract R C
SIGA, a system to manage information retrieval evaluations Evaluation
Information extraction
Information retrieval
Question answering
Lecture Notes in Computer Science English 2012 This paper provides an overview of the current version of SIGA, a system that supports the organization of information retrieval (IR) evaluations. SIGA was recently used in Págico, an evaluation contest where both automatic and human participants competed to find answers to 150 topics in the Portuguese Wikipedia, and we describe its new capabilities in this context as well as provide preliminary results from Págico. 0 0
GikiCLEF: Expectations and lessons learned Lecture Notes in Computer Science English 2010 This overview paper is devoted to a critical assessment of GikiCLEF 2009, an evaluation contest specifically designed to expose and investigate cultural and linguistic issues in Wikipedia search, with eight participant systems and 17 runs. After providing a maximally short but self contained overview of the GikiCLEF task and participation, we present the open source SIGA system, and discuss, for each of the main guiding ideas, the resulting successes or shortcomings, concluding with further work and still unanswered questions. 0 0
How geographic was GikiCLEF? A GIR-critical review Crosslinguality
Geographical IR
Question answering
Proceedings of the 6th Workshop on Geographic Information Retrieval, GIR'10 English 2010 In this paper we draw a balance of GikiCLEF as far as its appropriateness for the evaluation of GIR systems is concerned. We measure its degree of dealing with geographic matter, and offer GIRA, the final resource, for GIR evaluation purposes. Copyright 2010 ACM. 0 0
GikiP at GeoCLEF 2008: joining GIR and QA forces for querying Wikipedia CLEF English 2009 0 0
GikiP at geoCLEF 2008: Joining GIR and QA forces for querying wikipedia Lecture Notes in Computer Science English 2009 This paper reports on the GikiP pilot that took place in 2008 in GeoCLEF. This pilot task requires a combination of methods from geographical information retrieval and question answering to answer queries to the Wikipedia. We start by the task description, providing details on topic choice and evaluation measures. Then we offer a brief motivation from several perspectives, and we present results in detail. A comparison of participants' approaches is then presented, and the paper concludes with improvements for the next edition. 0 0
GikiP: Evaluating geographical answers from wikipedia Crosslingual IR
Geographical IR
Question answering
International Conference on Information and Knowledge Management, Proceedings English 2008 This paper describes GikiP, a pilot task that took place in 2008 in CLEF. We present the motivation behind GikiP and the use of Wikipedia as the evaluation collection, detail the task and we list new ideas for its continuation. 0 0
GikiP: evaluating geographical answers from wikipedia Crosslingual ir
Geographical ir
Question answering
GIR English 2008 0 0
Handling implicit geographic evidence for geographic IR Geographic information retrieval
Named entity recognition
Data mining
International Conference on Information and Knowledge Management, Proceedings English 2008 Most geographic information retrieval systems depend on the detection and disambiguation of place names in documents, assuming that the documents with a specific geographic scope contain explicit place names in the text that are strongly related to the document scopes. However, some non-geographic names such as companies, monuments or sport events, may also provide indirect relevant evidence that can significantly contribute to the assignment of geographic scopes to documents. In this paper, we analyze the amount of implicit and explicit geographic evidence in newspaper documents, and measure its impact on geographic information retrieval by evaluating the performance of a retrieval system using the GeoCLEF evaluation data. 0 0
What Happened to Esfinge in 2007? Anaphor resolution
Answer choice
Question answering
Question reformulation
Wikipedia processing
Lecture Notes in Computer Science English 2008 Esfinge is a general domain Portuguese question answering system which uses the information available on the Web as an additional resource when searching for answers. Other external resources and tools used are a broad coverage parser, a morphological analyser, a named entity recognizer and a Web-based database of word co-occurrences. In this fourth participation in CLEF, in addition to the new challenges posed by the organization (topics and anaphors in questions and the use of Wikipedia to search and support answers), we experimented with a multiple question and multiple answer approach in QA. 0 0