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A Question Answering System based on Information Retrieval and Validation

Álvaro Rodrigo, Joaquín Pérez-Iglesias, Anselmo Peñas, Guillermo Garrido, Lourdes Araujo
2010 Conference and Labs of the Evaluation Forum  
Our participation at ResPubliQA 2010 was based on applying an Information Retrieval (IR) engine of high performance and a validation step for removing incorrect answers.  ...  The IR engine received additional information from the analysis of questions, what produces a slight improvement in results.  ...  the Research Network MA2VICMR (S-2009/TIC-1542), the Education Council of the Regional Government of Madrid and the European Social Fund.  ... 
dblp:conf/clef/RodrigoPPGA10 fatcat:lltpwabkzbhiznmbpdscfi57by

A Hybrid Question Answering System based on Information Retrieval and Answer Validation

Partha Pakray, Pinaki Bhaskar, Somnath Banerjee, Bidhan Chandra Pal, Sivaji Bandyopadhyay, Alexander F. Gelbukh
2011 Conference and Labs of the Evaluation Forum  
We have submitted total five unique runs in the main task: two runs from systems based on Answer Validation (AV) machine reading techniques, one run from systems based on Question Answering (QA) techniques  ...  while the last two runs are hybrid systems where the decision is taken based on the outputs from the AV and QA based systems.  ...  We acknowledge the support of the IFCPAR funded Indo-French project "An Advanced Platform for Question Answering Systems" and the DIT, Government of India funded project "Development of Cross Lingual Information  ... 
dblp:conf/clef/PakrayBBPBG11 fatcat:cqrlhxgwyfavtlmtmm3w657ifa


Maria Vijoy, Sangeetha Jamal.
2016 International Journal of Advanced Research  
Web based question answering system, 2. IR/IE based question answering system, 3. Restricted domain question answering system, 4.Rule based question answering system.  ...  Question answering system is itself a intersection of natural language processing, information retrieval, Machine learning, knowledge representation logic and inference, semantic search [2] .QA systems  ...  Precision=|correctly retrieved answers| X100 |total retrieved answers| This system is best for one word answers. When it comes to paragraph answers accuracy of the system will be failed.  ... 
doi:10.21474/ijar01/1303 fatcat:yat4xswhgvbcxilqglecuxjuwy

Exploring the Web and Semantic Knowledge-Driven Automatic Question Answering System

S Jayalakshmi, Ananthi Sheshaayee
2018 International Journal of Engineering & Technology  
Question Answering System is one of the best ways to identify the candidate answer with high accuracy.  ...  Asking the right question and retrieving a right answer to the posted query is a service which provide by the Natural Language Processing.  ...  Web and Ontology Based QA System Web Based QAS: The QA(Question Answering) system provides the answer from the web corpus [5] .  ... 
doi:10.14419/ijet.v7i3.6.16007 fatcat:5g5nat6vpbgg3m3qb7ku4q3mam

Multi-Modal Answer Validation for Knowledge-Based VQA [article]

Jialin Wu, Jiasen Lu, Ashish Sabharwal, Roozbeh Mottaghi
2021 arXiv   pre-print
To address this challenge, we propose Multi-modal Answer Validation using External knowledge (MAVEx), where the idea is to validate a set of promising answer candidates based on answer-specific knowledge  ...  The problem of knowledge-based visual question answering involves answering questions that require external knowledge in addition to the content of the image.  ...  The missing information could prevent VQA systems from learning whether the knowledge is valid for the question and disambiguating the entities in the triplet.  ... 
arXiv:2103.12248v3 fatcat:ii7igdfmsfat7l63igedoou2ty

The Alyssa System at TREC QA 2007: Do We Need Blog06?

Dan Shen, Michael Wiegand, Andreas Merkel, Stefan Kazalski, Sabine Hunsicker, Jochen L. Leidner, Dietrich Klakow
2007 Text Retrieval Conference  
We describe the participation of the Saarland University LSV group in the DARPA/NIST TREC 2007 Q&A track with the Alyssa system, using an approach that combines cascaded language-model based information  ...  retrieval (LMIR) with data-driven learning methods for answer extraction and ranking.  ...  Web Validation The vast amounts of information available on the World Wide Web makes it an attractive resource for answer finding.  ... 
dblp:conf/trec/ShenWMKHLK07 fatcat:a26qzivj2jd33gtxz22m577dry

A New Architecture of Automatic Question Answering System using Ontology

Pawan Kumar, Raj Kumar Goel, Prem Sagar Sharma
2014 International Journal of Computer Applications  
In this paper, we have discussed a new model for question answering system which is find exact answer and improved their module.  ...  These systems are often required to rank and validate candidate answers. These modules are finding the exact answer of given query by the user.  ...  It is used in Question Answering system to retrieve answer in a large document collection.  ... 
doi:10.5120/17120-7671 fatcat:je6s6cshhbfdjo5nnjq7t77qru

Information Retrieval: Improving Question Answering Systems By Query Reformulation And Answer Validation

Mohammad Reza Kangavari, Samira Ghandchi, Manak Golpour
2008 Zenodo  
Question answering (QA) aims at retrieving precise information from a large collection of documents.  ...  These techniques aiming at finding short and precise answers are often based on the semantic relations and co-occurrence keywords.  ...  QUESTION ANSWERING SYSTEMS (QA) QA is a type of information retrieval.  ... 
doi:10.5281/zenodo.1081840 fatcat:cptx2gywkbalpdyudyyov6rq3u

An Optimised Query Retrival Methodology using user Customized Feedback System

2015 International Journal of Science and Research (IJSR)  
A Question Answering system gives us a precise solution to this scenario. A Question Answering system retrieves a precise answer to any natural language question posed by the user.  ...  The World Wide Web is an attractive source of information retrieval and can be used for seeking simple factual answers for user questions.  ...  A typical Question Answering system can be divided into 3 modules namely: Question Processing module, Document Processing or Information Retrieval module and Answer Processing module.  ... 
doi:10.21275/v4i11.sub158846 fatcat:mnnravegjjhntjbohrzmzsqm4m

Question Answering with LCC's CHAUCER-2 at TREC 2007

Andrew Hickl, Kirk Roberts, Bryan Rink, Jeremy Bensley, Tobias Jungen, Ying Shi, John Williams
2007 Text Retrieval Conference  
selection components featured in its CHAUCER-2 automatic question-answering (Q/A) system.  ...  with a new indexing and retrieval engine capable of retrieving documents or passages based on the distribution of named entities or semantic dependencies, we were able to dramatically enhance CHAUCER-2  ...  This material is based upon work funded in whole or in part by the U.S.  ... 
dblp:conf/trec/HicklRRBJSW07 fatcat:af7orhm2urfl3lzc3hiwuyuwoq


Sreelakshmi V .
2014 International Journal of Research in Engineering and Technology  
A Question Answering system gives us a precise solution to this scenario. A Question Answering system retrieves a precise answer to any natural language question posed by the user.  ...  The World Wide Web is an attractive source of information retrieval and can be used for seeking simple factual answers for user questions.  ...  The answer size varied from a word , a few words, to a sentence based on the question type.  ... 
doi:10.15623/ijret.2014.0327020 fatcat:gh6rmuuz4jbxvmgubmyl6vttga

A comparative study of web based and IR based question answering systems

Rosy Madaan, Sharma A.K, Ashutosh Dixit, Deepti Kapri, Renu Mudgal
2012 International Journal of Advances in Computing and Information Technology  
[10] is a full text retrieval system which is based on a technique called tf-idf weighting and second system Basic SMART [10] is based on Vector Space Model.  ...  : 4 Comparison of Web based and IR based QA system Web Based QA System IR based QA System Focus These systems retrieve documents from Web and use them for selecting answer for the user's question.  ... 
doi:10.6088/ijacit.12.10024 fatcat:vuapgnfov5es3fsu2bwl4n6zlu

An annotation similarity model in passage ranking for historical fact validation

Jun Araki, Jamie Callan
2014 Proceedings of the 37th international ACM SIGIR conference on Research & development in information retrieval - SIGIR '14  
State-of-the-art question answering (QA) systems employ passage retrieval based on bag-of-words similarity models with respect to a query and a passage.  ...  Historical fact validation is a subtask to determine whether a given sentence tells us historically correct information, which is important for a QA task on world history.  ...  INTRODUCTION Passage retrieval is a core component for question answering (QA) systems [18, 5, 6, 10] .  ... 
doi:10.1145/2600428.2609522 dblp:conf/sigir/ArakiC14 fatcat:7m74ssquxvbq7p7ux33aeh3zpm

QUASE: AN Ontology-Based Domain Specific Natural Language Question Answering System

2019 International journal of recent technology and engineering  
In this paper QUASE (QUestion Answering System for Education) question answering system for answering natural language questions has been proposed which help to find answer for any given question in a  ...  By application of this system the learners can gain knowledge on their own by getting precise answers to their questions asked in natural language instead of getting back merely a list of documents.  ...  So for validation purpose original sentence equivalent of matched sentence is retrieved from backup and passed to answer validation phase. Search is based on user's choice given at input stage.  ... 
doi:10.35940/ijrte.d6773.118419 fatcat:hofquqpmyvelbhn7ttn6qfkjee

A Semi-supervised learning approach to enhance health care Community-based Question Answering: A case study in alcoholism [article]

Papis Wongchaisuwat, Diego Klabjan, Siddhartha R. Jonnalagadda
2016 arXiv   pre-print
In this study, we developed an algorithm to automatically answer health-related questions based on past questions and answers (QA).  ...  Important features distinguishing a valid answer from an invalid answer include text length, number of stop words contained in a test question, a distance between the test question and other questions  ...  Answers dataset and Dr. Kalpana Raja from Northwestern University for helping with UMLS. This work was partly supported by funding from the National Library of Medicine grant R00LM011389.  ... 
arXiv:1607.00706v1 fatcat:gj35slc6gzdojevbgqgogmsbu4
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