27,197 Hits in 4.6 sec

Benchmarking Approximate Consistent Query Answering (Discussion Paper)

Marco Calautti, Marco Console, Andreas Pieris
2021 Sistemi Evoluti per Basi di Dati  
Consistent query answering (CQA) aims to deliver meaningful answers when queries are evaluated over inconsistent databases.  ...  Such answers must be certainly true in all repairs, which are consistent databases whose difference from the inconsistent one is somehow minimal.  ...  Conjunctive Queries. We use 𝑄 Consistent Query Answering. ̄  ... 
dblp:conf/sebd/CalauttiCP21 fatcat:srtbgnnhm5fbpdu5zeegp4q7xa

Benchmarking Approximate Consistent Query Answering

Marco Calautti, Marco Console, Andreas Pieris
2021 Proceedings of the 40th ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems  
Consistent query answering (CQA) aims to deliver meaningful answers when queries are evaluated over inconsistent databases.  ...  Such answers must be certainly true in all repairs, which are consistent databases whose difference from the inconsistent one is somehow minimal.  ...  (3) Is, in the end, approximate consistent query answering as described above feasible in practice? Main Outcome.  ... 
doi:10.1145/3452021.3458309 fatcat:huu3d2ncurbsxjgpybg6jhzusa

Retrieving opinions from discussion forums

Laura Dietz, Ziqi Wang, Samuel Huston, W. Bruce Croft
2013 Proceedings of the 22nd ACM international conference on Conference on information & knowledge management - CIKM '13  
Discussion forums are potentially a good source of this information, but comes with a unique set of retrieval challenges.  ...  In this short paper, we test a range of existing techniques for forum retrieval and develop new retrieval models to differentiate between opinionated and factual forum posts.  ...  In this paper, we use a subset consisting of approximately 262, 000 threads, containing almost 5.5 million posts. The subset contains 591 million terms, with a vocabulary of 1.1 million unique terms.  ... 
doi:10.1145/2505515.2507861 dblp:conf/cikm/DietzWHC13 fatcat:vpvd3ngy7fcihoziypoyxtijfy

Learning analytics for online discussions

Alyssa Friend Wise, Yuting Zhao, Simone Nicole Hausknecht
2013 Proceedings of the Third International Conference on Learning Analytics and Knowledge - LAK '13  
This paper describes an application of learning analytics that builds on an existing research program investigating how students contribute and attend to the messages of others in online discussions.  ...  Analytics were reported as useful in validating invisible discussion activity, but at times triggered emotionally-charged responses.  ...  Acknowledgements We would like to thank the Social Sciences and Humanities Council of Canada for their generous support of this work and Farshid Marbouti for the use of the Visual Discussion Forum and  ... 
doi:10.1145/2460296.2460308 dblp:conf/lak/WiseZH13 fatcat:5skkxd32ezfivk5ee3hhbxbsdm

Detecting Health Related Discussions in Everyday Telephone Conversations for Studying Medical Events in the Lives of Older Adults

Golnar Sheikhshab, Izhak Shafran, Jeffrey Kaye
2014 Proceedings of BioNLP 2014  
Our results show that the increase in discussion of health related conversations is statistically associated with actual medical events obtained through weekly selfreports.  ...  We apply semi-supervised topic modeling techniques to detect health-related discussions in everyday telephone conversations, which has applications in large-scale epidemiological studies and for clinical  ...  We thank Nicole Larimer for help in collecting the data, Maider Lehr for testing the data collection devices and Katherine Wild for early discussions on this project.  ... 
doi:10.3115/v1/w14-3406 dblp:conf/bionlp/SheikhshabSK14 fatcat:z2evx4bgtjb4fdnz6kkerdrgi4

How Public Information Affects Asymmetrically Informed Lenders : Evidence from a Credit Registry Reform

M. Ali Choudhary, Board of Governors of the Federal Reserve System, Anil Jain
2014 International Finance Discussion Paper  
This is discussed in greater detail in the results. 5.2. Results.  ...  Construction of the 'informed 40%' variable is the same as the procedure in the paper for constructing the benchmark bank-firm pairs, except using a 40% cutoff for directorial shareholding.  ... 
doi:10.17016/ifdp.2014.1125 fatcat:zkfknx5cpjb4himx7bzbwhknlq

Towards the evaluation of the LarKC Reasoner Plug-ins

Zhisheng Huang
2010 International Semantic Web Conference  
We discuss the evaluation methods, measures, benchmarks, and performance targets for the plug-ins to be developed for approximate reasoning with interleaved reasoning and selection.  ...  In this paper, we propose a specification language of gold standards for the evaluation and benchmarking, and discuss how it can be used for the evaluation of reasoner plug-ins within the LarKC platform  ...  Measuring the Quality of Query Answers As discussed in the last section, the quality of query answers is one of the main criteria for evaluating and benchmarking of reasoners.  ... 
dblp:conf/semweb/Huang10 fatcat:hkxprlpnrfcn5ezif64iztjxrq

Description Logic Inference Technology: Lessions Learned in the Trenches

Volker Haarslev, Ralf Möller, Michael Wessel
2005 International Workshop on Description Logics  
In this article we summarize our experiences with the description logic reasoner Racer and perform an evaluation of the system with respect to instance retrieval benchmarks.  ...  Furthermore, in [2, 3] a set of 14 benchmarking queries is defined, ranging from simple queries that can be answered using plain relational look-up techniques to more complicated queries which require  ...  For query 12, DLDB as well as Racer in mode A return 0 results whereas Racer mode B returns all results (15 chairs) since in the given LUBM benchmark, university 1 consists of 15 departments, each associated  ... 
dblp:conf/dlog/HaarslevMW05 fatcat:danfmqa5z5awdpnxcydf7hr7fi

Database Benchmarking for Supporting Real-Time Interactive Querying of Large Data

Leilani Battle, Philipp Eichmann, Marco Angelini, Tiziana Catarci, Giuseppe Santucci, Yukun Zheng, Carsten Binnig, Jean-Daniel Fekete, Dominik Moritz
2020 Proceedings of the 2020 ACM SIGMOD International Conference on Management of Data  
In this paper, we present a new benchmark to validate the suitability of database systems for interactive visualization workloads.  ...  We make our benchmark materials, including input datasets, interaction sequences, corresponding SQL queries, and analysis code, freely available as a community resource, to foster further research in this  ...  A different approach, known by several names, such as anytime query answering [44] , online aggregation [25, 26] , and progressive analytics [5, 19] , provides an approximate query result that improves  ... 
doi:10.1145/3318464.3389732 dblp:conf/sigmod/BattleEACSZBFM20 fatcat:njdvag7hvrby7kcgsdch67omgu

Implementation and Compliance Benchmarking of a DGGS-enabled, GeoSPARQL-aware, Triplestore

David Habgood, Timo Homburg, Nicholas John Car, Milos Jovanovik
2022 Extended Semantic Web Conference  
The benchmark results confirm that a majority of the functions which were set out to be implemented in the course of this paper were implemented correctly and points out possible future work for full compliance  ...  Compliance is tested using an adapted implementation of the GeoSPARQL Compliance Benchmark testing system developed previously to test for GeoSPARQL 1.0 compliance.  ...  executed in a reproducible environment such as the HOBBIT benchmarking platform.  ... 
dblp:conf/esws/HabgoodHCJ22 fatcat:wmuwcelo2rduxibjgbkg3727xq

Towards a Benchmark for Interactive Data Exploration

Philipp Eichmann, Emanuel Zgraggen, Zheguang Zhao, Carsten Binnig, Tim Kraska
2016 IEEE Data Engineering Bulletin  
This paper discusses challenges of creating such a metric and presents ideas towards a new benchmark that simulates typical user behavior and allows IDE systems to be compared in a reproducible way.  ...  The main metric of these benchmarks is the performance of running different SQL queries over a predefined database.  ...  Similarly, a system which provides an approximate answer in 500ms and a complete answer for the same query in 10s, is likely to be superior to a system which forces the users to wait and only returns the  ... 
dblp:journals/debu/EichmannZZBK16 fatcat:2xpoac44endftamwxrsvxkariq

Reproducibility dataset for the paper "ANN-Benchmarks: A benchmarking tool for approximate nearest neighbor search" [article]

Martin Aumüller
2021 Zenodo  
The rst and third authors thank all members of the algorithm group at the IT University of Copenhagen for fruitful discussions.  ...  Acknowledgements: We thank both the reviewers of the earlier conference submission and of this journal submission for their careful comments that allowed us to improve the paper.  ...  Subsequently, we discuss the answers to these questions, present some observations regarding the build time of indexes and their ability to answer batched queries, and summarise our ndings.  ... 
doi:10.5281/zenodo.5613101 fatcat:4dxqcll6pjhx7jhsbhwtic5aja

Efficient and scalable processing of frequent SPARQL queries

Rajasekhar Velamuri, P. Sreenivasa Kumar
2013 International Conference on Management of Data  
We propose a framework which can run on the scale of billions of triples and answers the frequent SPARQL [7] queries in a reasonable amount of time.  ...  The number of triples currently published on the web is approximately 62 billion from 870 datasets [4]. We need frameworks that can query RDF data efficiently when the data sizes scale up.  ...  Frequent Query Database (FQDB): A database which consists of triples contributing to the frequent query answer. Infrequent Query Database (IFQDB): A database which answers infrequent queries.  ... 
dblp:conf/comad/VelamuriK13 fatcat:m36dz3223vayblava2eimxfcqq

Text Summarization using QA Corpus for User Interaction Model QA System

Karpagam K., College of Engineering & Technology, Pollachi, Saradha A., Manikandan K., Madusudanan K., Institute of Road Transport and Technology, Erode, Vellore Institute of Technology, Vellore, College of Engineering & Technology, Pollachi
2020 International Journal of Education and Management Engineering  
The outcome is better in the producing close proximity of answers for the given user query.  ...  Document summarization is capable of generating user query relevant, precise summaries from the original document for user needs.  ...  In paper [12] discuss on several optimization methods had been adopted to reducing the time consuming process and produces approximate the Global best solution artificial bee colony [13] , Genetic algorithms  ... 
doi:10.5815/ijeme.2020.03.04 fatcat:wokhamjdo5fwvhf5ojtmovntxy

CBench: Towards Better Evaluation of Question Answering Over Knowledge Graphs [article]

Abdelghny Orogat, Isabelle Liu, Ahmed El-Roby
2021 arXiv   pre-print
In this paper, we introduce CBench, an extensible, and more informative benchmarking suite for analyzing benchmarks and evaluating question answering systems.  ...  Although several question answering benchmarks can be used to evaluate question-answering systems over a number of popular knowledge graphs, choosing a benchmark to accurately assess the quality of a question  ...  Benchmark (B): A benchmark = { , , } consists of a set of natural language questions , an optional set of formal queries , and a set of gold standard answers such that is the set of gold standard answers  ... 
arXiv:2105.00811v1 fatcat:dkf4hi6dlbbr3cc22clvml6ppa
« Previous Showing results 1 — 15 out of 27,197 results