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Exploration and mining of web repositories

Nan Zhang, Gautam Das
2014 Proceedings of the 7th ACM international conference on Web search and data mining - WSDM '14  
, form-like search, graph browsing Deep Web Repository • e.g., seed-query based bootstrapping for crawling • e.g., query sampling for repository sampling • No guarantee on query cost, accuracy, etc. •  ...  Das, "Mining Enterprise Search Engine's Corpus: Efficient Yet Unbiased Sampling and Aggregate Estimation", SIGMOD 2011.  Query Graph [ZZD13] o Two queries are connected if each appears in at least one  ...  • Level 1: a query is needed to determine whether user A befriends B. • Level 2: a query reveals the list of user A's friends. • Level 3: a query reveals the list of user A's friends, as well as the degree  ... 
doi:10.1145/2556195.2556197 dblp:conf/wsdm/0004D14 fatcat:qd3n4ceurrhbxpyw5ix3vcoe3q

Ephedra: Efficiently Combining RDF Data and Services Using SPARQL Federation [chapter]

Andriy Nikolov, Peter Haase, Johannes Trame, Artem Kozlov
2017 Communications in Computer and Information Science  
To address these needs, we present Ephedra: a SPARQL federation engine aimed at processing hybrid queries.  ...  We validate Ephedra in the use case scenarios and discuss practical implications of hybrid query processing.  ...  Acknowledgements This work has been supported by the Eurostars project DIESEL (E!9367) and by the German BMWI Project GEISER (project no. 01MD16014).  ... 
doi:10.1007/978-3-319-69548-8_17 fatcat:4xbpne6mwndyfilcranyllp2im

Provenance-Based Searching and Ranking for Scientific Workflows [chapter]

Víctor Cuevas-Vicenttín, Bertram Ludäscher, Paolo Missier
2015 Lecture Notes in Computer Science  
We present PBase, a scientific workflow provenance repository that supports declarative graph queries and keyword-based graph searching, complemented with ranking capabilities taking into consideration  ...  PBase aims to satisfy this requirement while also presenting to the user a customized graphical user interface that greatly facilitates the exploration of the repository and the visualization of results  ...  This work was supported by NSF Award OCI-0830944 (Data-ONE).  ... 
doi:10.1007/978-3-319-16462-5_17 fatcat:h7l7qhsgurbyjn6n7afmt54x6u

Content-based search of model repositories with graph matching techniques

Bojana Bislimovska, Alessandro Bozzon, Marco Brambilla, Piero Fraternali
2011 Proceeding of the 3rd international workshop on Search-driven development: users, infrastructure, tools, and evaluation - SUITE '11  
The framework uses querying on graphs, performing similarity search based on graph matching.  ...  Repositories contain all the data and documents for a software project, but they also contain business process models and application models.  ...  Content Based Search Content-based search allows querying over model repositories by using models as queries .  ... 
doi:10.1145/1985429.1985431 fatcat:7ssdhdbbs5baro7pvbyuc4763e

Ephedra: SPARQL Federation over RDF Data and Services

Andriy Nikolov, Peter Haase, Johannes Trame, Artem Kozlov
2017 International Semantic Web Conference  
Knowledge graph management use cases often require addressing hybrid information needs that involve a multitude of data sources, a multitude of data modalities (e.g., structured, keyword, geospatial search  ...  Although SPARQL queries provide a convenient way of expressing data requests over RDF knowledge graphs, the level of support for hybrid information needs is limited: existing query engines usually focus  ...  Acknowledgements This work has been supported by the Eurostars project DIESEL (E!9367) and by the German BMWI Project GEISER (project no. 01MD16014).  ... 
dblp:conf/semweb/Nikolov0TK17 fatcat:cubkkqlv6jhr3l6kkneb3krev4


Gianfranco E. MODONI, Marco SACCO, Walter TERKAJ
2014 Applied Computer Science  
Effective internal search tools could make their job more efficient. However, a killer application for this type of solutions is still not available.  ...  This paper introduces an envisioned architecture, which should represent the foundations of a new generation of tools for searching information within enterprises.  ...  A common data model aggregates and unifies all the information, improving significantly the potential of a search application. Fig. 2.  ... 
doaj:4b8f78ce655344e89c7e8f7b51e9e4f1 fatcat:4s3g3z4lkrbpfcdasj7anufl34

Similarity assessment and efficient retrieval of semantic workflows

Ralph Bergmann, Yolanda Gil
2014 Information Systems  
New workflows can be constructed by reuse of already available similar workflows from a repository.  ...  To this end, we describe a new generic model for representing workflows as semantically labeled graphs, together with a related model for knowledge intensive similarity measures.  ...  The authors appreciate the fruitful discussion on the topic of the paper by the various groups' members in Trier and Marina del Rey.  ... 
doi:10.1016/ fatcat:ykpsqlgcbndsvbhvxwnqwebbye


Dean B. Krafft, Aaron Birkland, Ellen J. Cramer
2008 Proceedings of the 8th ACM/IEEE-CS joint conference on Digital libraries - JCDL '08  
Types: -Resources (with local or remote content) -Metadata -Aggregations (collections) -Metadata Providers (branding) -Agents • Relationships with arbitrary graph queries: -Structural (part of)  ...  Implementation: Key Points • Separation of data into an atomistic model -Metadata and described resource(s) are separate objects -Two different "planes" for data to exist in: Graph and relationships between  ... 
doi:10.1145/1378889.1378943 dblp:conf/jcdl/KrafftBC08 fatcat:rie75nhn3ve4zfhhdy7vfkx5rm

Graph Search of Software Models Using Multidimensional Scaling

Bojana Bislimovska, Günes Aluç, M. Tamer Özsu, Piero Fraternali
2015 International Conference on Extending Database Technology  
Mul-tiModGraph preserves the model structure and metamodel information by representing models as graphs.  ...  On the other hand, existing approaches that consider the structure while querying software models are limited to only specific domains such as Business Process Models (BPMs).  ...  We have evaluated our approach on a real-world WebML repository using 10 test queries.  ... 
dblp:conf/edbt/Bislimovska15 fatcat:nzuxtqz4inbpbnk3maxh7xoap4

Immediate ROI Search for 3-D Medical Images [chapter]

Karen Simonyan, Marc Modat, Sebastien Ourselin, David Cash, Antonio Criminisi, Andrew Zisserman
2013 Lecture Notes in Computer Science  
The objective of this work is a scalable, real-time, visual search engine for 3-D medical images, where a user is able to select a query Region Of Interest (ROI) and automatically detect the corresponding  ...  We make three contributions: (i) we show that with appropriate off-line processing, images can be retrieved and ROIs registered in real time; (ii) we propose and evaluate a number of scalable exemplar-based  ...  This work was supported by Microsoft Research PhD Scholarship Program, ERC grant VisRec no. 228180, and CBRC grant no. 168.  ... 
doi:10.1007/978-3-642-36678-9_6 fatcat:xy4bwwaybbgh3kdkqtvpayhgpy

SPARQL: Semantic Information Retrieval by Embedding Prepositions

Sneha Kumari, Rajiv Pandey, Amit Singh, Himanshu Pathak
2014 International journal of network security and its applications  
This paper proposes to suggest a model to enable SPARQL to make search efficient, easier and produce meaningful search distinguished on the basis of preposition.  ...  An RDF data source primarily consist of data that is represented in the form of a Triple pattern which has an appropriate RDF syntax and further results into an RDF Graph .The RDF repository stores the  ...  The SPARQL engine will however only return search based on preposition when the underlying data set is got the appropriate schema. Thus all data sets of the future will need to be RDF repositories.  ... 
doi:10.5121/ijnsa.2014.6105 fatcat:jnb4dp3m3jhclpnz5zgnag7sbe

PQL - A Descriptive Language for Querying, Abstracting and Changing Process Models [chapter]

Klaus Kammerer, Jens Kolb, Manfred Reichert
2015 Lecture Notes in Business Information Processing  
However, existing approaches focus on the formal model transformations required in this context rather than on techniques for querying, abstracting and changing the process models in process repositories  ...  Due to the generic approach taken, the definition of process model abstractions and changes on any graph-based process notation becomes possible.  ...  Second, process models and process elements can be selected by a predicate-based search on specific process element attributes.  ... 
doi:10.1007/978-3-319-19237-6_9 fatcat:hhto7idkcjbxnmsyj6ak6v6sui

A Review of UML Model Retrieval Approaches

Alhassan Adamu, Wan Mohd Nazmee Wan Zainon
2016 Indian Journal of Science and Technology  
The findings of this review suggest the further research and practice in UML models reuse.  ...  The review resulted in the identification of four main categories of UML models matching and retrieval: 1. Information retrieval, 2. Casebased reasoning, 3. Ontology-based, and 4.  ...  The SUBDUE algorithm find the similarity between the graph by comparing the substructures of sequence diagrams in query and repository.  ... 
doi:10.17485/ijst/2016/v9i46/106918 fatcat:5eju5l47izegbbhvkoayji5fgq

Crossing textual and visual content in different application scenarios

Julien Ah-Pine, Marco Bressan, Stephane Clinchant, Gabriela Csurka, Yves Hoppenot, Jean-Michel Renders
2008 Multimedia tools and applications  
Our first method proposes using a mixture model of the aggregate components, considering them as a single relevance concept.  ...  We propose two new approaches for hybrid text-image information processing that can be straightforwardly generalized to the more general multimodal scenario.  ...  In our first approach (section 3.1), we build a model inspired by the mixture model [38] of the aggregate.  ... 
doi:10.1007/s11042-008-0246-8 fatcat:w3ilxvdl65bgpl453z7izlnzbq

BigDataGrapes D4.2 - Methods and Tools for Distributed Inference

Milena Yankova, Boyan SImeonov, Atanas Kiryakov, Vladimir Alexiev
2019 Zenodo  
We address the main principles applied to data inference and different types of inference – rule-based, query-based, model-based and fuzzy inference – and their application in BigDataGrapes project.  ...  The advantage of this scenario is that one can query MongoDB directly having all semantics materialised and will improve query time (see section Evaluation results, where the evaluation setting creates  ...  This will greatly reduce the execution complexity of queries compared to other scenarios.  ... 
doi:10.5281/zenodo.2629568 fatcat:amfv6a5euncnndfhsbgubr4i6q
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