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Towards practical meta-querying

Jan Van den Bussche, Stijn Vansummeren, Gottfried Vossen
2005 Information Systems  
We describe a meta-querying system for databases containing queries in addition to ordinary data. In the context of such databases, a meta-query is a query about queries.  ...  Representing stored queries in XML, and using the standard XML manipulation language XSLT as a sublanguage, we show that just a few features need to be added to SQL to turn it into a fully-fledged meta-query  ...  Discussion Other meta-query languages: Meta-SQL is the first practical language for meta-querying.  ... 
doi:10.1016/ fatcat:2z3fgfs2ardzvks7slhi7tmbca

Meta-SQL: Towards Practical Meta-Querying [chapter]

Jan Van den Bussche, Stijn Vansummeren, Gottfried Vossen
2004 Lecture Notes in Computer Science  
doi:10.1007/978-3-540-24741-8_48 fatcat:rbydc7knvjdjtjogvnrwwu4qja

MURAL: Meta-Learning Uncertainty-Aware Rewards for Outcome-Driven Reinforcement Learning [article]

Kevin Li, Abhishek Gupta, Ashwin Reddy, Vitchyr Pong, Aurick Zhou, Justin Yu, Sergey Levine
2021 arXiv   pre-print
To make this tractable, we propose a novel method for computing the NML distribution by using meta-learning.  ...  If trained properly, such a classifier can provide a well-shaped objective landscape that both promotes progress toward good states and provides a calibrated exploration bonus.  ...  META-TRAINING AT FIXED INTERVALS While in principle meta-NML would retrain with every new datapoint, in practice we retrain meta-NML once every k epochs.  ... 
arXiv:2107.07184v2 fatcat:gxbaq7he5ffa3ior5tlpmmvsii

Using Provenance to support Good Laboratory Practice in Grid Environments [article]

Miriam Ney and Guy K. Kloss and Andreas Schreiber
2011 arXiv   pre-print
Provenance recording is used to meet requirements of traceability, and this information can later be queried for further analysis.  ...  Documentation and scientific conduct are regulated and termed as "good laboratory practice." Laboratory notebooks are used to record each step in conducting an experiment and processing data.  ...  This can generally be accomplished by tweaking a generic storage system for data and (extensive) associated meta-data towards the use case for supporting good laboratory practice.  ... 
arXiv:1112.3062v1 fatcat:whvr52ouqzdsbmi3ap6nrthxga

Position Paper on Rule Languages for Interoperability

Ravi Sundaar, Minerva Hobbs
2005 W3C Workshops  
This is a practical necessity for most rule bases. Rule Base Query Language Any integration and interaction with a new system starts with a human studying and analyzing the system.  ...  As we stated earlier in the document, a multi-pronged approach will help in adoption of the standards that this workshop participants work towards.  ... 
dblp:conf/w3c/SundaarH05 fatcat:dxy6biziyrh3bihjtytaot4r6y

Collaborative Web Search

Barry Smyth, Evelyn Balfe, Peter Briggs, Maurice Coyle, Jill Freyne
2003 International Joint Conference on Artificial Intelligence  
Users are notoriously poor at representing their needs in the form of a query, and search engines are poor at responding to vague queries.  ...  , and each of the 60 queries is submitted to obtain up to 30 results based on a standard meta-search ranking function.  ...  Once again, biasing relevance towards new pages should help to cope with this problem.  ... 
dblp:conf/ijcai/SmythBBCF03 fatcat:b5bvh6jkujekzmgcpueuyj7num

Leveraging Business Intelligence to Build Meta-knowledge

Sanjay Mathrani, Anuradha Mathrani
2013 2013 46th Hawaii International Conference on System Sciences  
Over the years, many organizations have implemented business intelligence (BI) systems as an initiative towards dynamically creating and managing information that enables real-time responses to business  ...  This study captures the essence of BI practices that are most responsible for optimizing organizational performance by applying analytic processes and transforming enterprise-wide system data into knowledge  ...  Model for Data Utilization using Business Intelligence Table 3 . 3 Critical Practices for the BI Process to Build Meta-knowledge Analytical add-ons to include SQL queries, filters, cross-tabs, report  ... 
doi:10.1109/hicss.2013.382 dblp:conf/hicss/MathraniM13 fatcat:vs2j7od5inhp7fnatpct6jbgoa

Critical Business Intelligence Practices to Create Meta-knowledge

Sanjay Mathrani
2020 International Journal of Business Information Systems  
This study investigates the BI practices critical in creating meta-knowledge successfully for strategy-focused analytical decision-making.  ...  Findings reveal that BI practices are highly context-specific in mapping decisions with data assets.  ...  Practices considered critical for leveraging BI to transform data into meta-knowledge and share organisational information for producing benefits are summarised.  ... 
doi:10.1504/ijbis.2020.10031738 fatcat:2fday72l4zdl7myjwyo4x7bycy

Query Performance Prediction: Evaluation Contrasted with Effectiveness [chapter]

Claudia Hauff, Leif Azzopardi, Djoerd Hiemstra, Franciska de Jong
2010 Lecture Notes in Computer Science  
We address this issue in the context of two settings: Selective Query Expansion and Meta-Search.  ...  Meta-Search setting.  ...  The meta-search run run meta is then created by selecting for each query the result of the run with the highest predicted ap score.  ... 
doi:10.1007/978-3-642-12275-0_20 fatcat:zymw3b4krvd3lm654vfkp2atmi

An Architecture for Secure Web Resource with Outsourced Database

Kirill Shatilov, Sergey Krendelev, Diana Anisutina, Artem Sumaneev, Evgeny Ogurtsov
2015 Position Papers of the 2015 Federated Conference on Computer Science and Information Systems  
Secondly, proposed solution implies presence of trusted intermediate component, responsible for SQL query precessing and site hosting tasks.  ...  In this paper basic ideas of creating secure web resource will be discussed, as long as practical aspects. In addition proposed solution analysis using different metrics will be provided.  ...  Meta file management system resolves all requests by SQL queries processor and returns keys and meta information required for correct syntax processing. 7) After queries processed and all confidential  ... 
doi:10.15439/2015f59 dblp:conf/fedcsis/ShatilovKASO15 fatcat:o7r4cpz4o5ayjjgk5fcpeigynu

Towards structured sharing of raw and derived neuroimaging data across existing resources [article]

D. B. Keator, K. Helmer, J. Steffener, J. A. Turner, T. G. M. Van Erp, S. Gadde, N. Ashish, G. A. Burns, B. N. Nichols, S. S. Ghosh
2013 arXiv   pre-print
The working group develops models and tools facilitating the structured interchange of neuroimaging meta-data and is making progress towards a unified set of tools for such data and meta-data exchange.  ...  work from the Derived Data Working Group, an open-access group sponsored by the Biomedical Informatics Research Network (BIRN) and the International Neuroimaging Coordinating Facility (INCF) focused on practical  ...  Standard practice is to convert the original DICOM files into more concise image formats with primarily spatial meta-data (e.g. NIfTI).  ... 
arXiv:1209.5922v3 fatcat:pcebf7inybfstkgkf6pfwrny7y

Methodology and standards for data analysis with machine learning tools

Damien François
2008 The European Symposium on Artificial Neural Networks  
This paper presents some ideas on how to move forward from art to science, through the use of methodological standards and meta learning.  ...  Several proposals have been published to extend SQL, the de facto standard query language for relational databases, towards a data mining query language, e.g. DMX [8] and DMQL [9] .  ...  Steps towards formalisation of explicit knowledge include the development of methodological standard guidelines, while implicit knowledge can be captured by meta learning tools.  ... 
dblp:conf/esann/Francois08 fatcat:iqiiwdwlirh63cak2dwonf5veu

Information Integration: Challenges and Approaches

Sharma Chakravarthy
2009 International Conference on Management of Data  
The problem of information integration is discussed in the context of answering a query over the web.  ...  Querying the web requires that information from different web and other sources be intelligently combined to generate all or top-k answers.  ...  The challenge now is whether the work on querying a structured database can be redirected meaningfully towards querying the web?  ... 
dblp:conf/comad/Chakravarthy09 fatcat:4kgj5onlhjdipaarzl73xkit6q

Quantitative evaluation of recall and precision of CAT Crawler, a search engine specialized on retrieval of Critically Appraised Topics

Peng Dong, Ling Ling Wong, Sarah Ng, Marie Loh, Adrian Mondry
2004 BMC Medical Informatics and Decision Making  
Critically Appraised Topics (CATs) are a useful tool that helps physicians to make clinical decisions as the healthcare moves towards the practice of Evidence-Based Medicine (EBM).  ...  The improved precision due to inherent filters underlines the practical usefulness of this tool for clinicians.  ...  Background Healthcare has been steadily moving towards Evidence-Based Medicine (EBM) since the term was formally introduced in 1992 by a group led by Gordon Guyatt at McMaster University, Canada [1] [  ... 
doi:10.1186/1472-6947-4-21 pmid:15588311 pmcid:PMC539260 fatcat:eakb2n4vsraolcnc5bwlyvaxa4

Reinforcement learning with limited reinforcement

Finale Doshi, Joelle Pineau, Nicholas Roy
2008 Proceedings of the 25th international conference on Machine learning - ICML '08  
This approximation, coupled with model-directed queries, allows the planner to actively learn the true underlying POMDP and the accompanying policy.  ...  We note that the number of interactions bounds the number of meta-queries, since we ask at most one meta-query for each normal interaction.  ...  If less than a p q -proportion of beliefs require meta-queries, then r is an upper bound on the number of remaining meta-queries with probability p q and confidence δ q .  ... 
doi:10.1145/1390156.1390189 dblp:conf/icml/DoshiPR08 fatcat:astawkhvenh3ra7u4hseir2zgm
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