Filters








3,134 Hits in 7.9 sec

On Enhancing Visual Query Building over KGs Using Query Logs [chapter]

Vidar Klungre, Ahmet Soylu, Martin Giese, Arild Waaler, Evgeny Kharlamov
2018 Lecture Notes in Computer Science  
over a given KG.  ...  In this work we present a visual query system that allows users to explore KGs by intuitively constructing tree-shaped conjunctive queries.  ...  In this short paper we presented our preliminary work on enhancing visual query building over KGs by addressing the overload problem with the help of query logs.  ... 
doi:10.1007/978-3-030-04284-4_6 fatcat:mne7s6r6xvcidjvlzd5zvxvmqq

Abstract Sifter: a comprehensive front-end system to PubMed

Nancy Baker, Thomas Knudsen, Antony Williams
2017 F1000Research  
The Abstract Sifter is a Microsoft Excel based application that enhances existing search capabilities of PubMed.  ...  To use, the enduser selects rows and clicks on the Send Queries to Landscape button to have the queries appended to Row 3 on the Landscape page. The Log sheet contains a row for each query run.  ...  For example, the query for "chlorpyrifos" returned over 4,000 PubMed citations.  ... 
doi:10.12688/f1000research.12865.1 pmid:29479422 pmcid:PMC5801564 fatcat:dm7yfqy2bndz3lf3optxsr7b4e

Probabilistic Entity Representation Model for Reasoning over Knowledge Graphs [article]

Nurendra Choudhary, Nikhil Rao, Sumeet Katariya, Karthik Subbian, Chandan K. Reddy
2021 arXiv   pre-print
Logical reasoning over Knowledge Graphs (KGs) is a fundamental technique that can provide efficient querying mechanism over large and incomplete databases.  ...  On the logical query reasoning problem, we demonstrate that the proposed PERM significantly outperforms the state-of-the-art methods on various public benchmark KG datasets on standard evaluation metrics  ...  Are we able to visualize the operations on PERM's query representations in the latent space?  ... 
arXiv:2110.13522v2 fatcat:flcnfepj5valdcakalyxnrx7ma

AliCG: Fine-grained and Evolvable Conceptual Graph Construction for Semantic Search at Alibaba [article]

Ningyu Zhang, Qianghuai Jia, Shumin Deng, Xiang Chen, Hongbin Ye, Hui Chen, Huaixiao Tou, Gang Huang, Zhao Wang, Nengwei Hua, Huajun Chen
2021 arXiv   pre-print
In real applications, however, it is necessary to extract less-frequent, fine-grained, and time-varying conceptual knowledge and build taxonomy in an evolving manner.  ...  with alignment consensus approach, b) mining long-tail concepts with a novel low-resource phrase mining approach, c) updating the graph dynamically via a concept distribution estimation method based on  ...  Conceptual Graph, which is a special type of KGs, builds the semantic connections between concepts and has proven to be valuable in short text understanding [21] , Word Sense Disambiguation [20] , enhanced  ... 
arXiv:2106.01686v2 fatcat:ahae7tr745bargo5c2ipxohorq

Utilizing Entities for an Enhanced Search Experience [chapter]

Krisztian Balog
2018 Advanced Topics in Information Retrieval  
These include query assistance services, such as query autocompletion and query suggestions, and specialized query building interfaces.  ...  We refer to Table 9 .1 for the notation used in this chapter. Query Assistance Chapter 7 dealt with query understanding from the machine's point of view.  ...  .: On building entity recommender systems using user click log and Freebase knowledge. In: Proceedings of the 7th ACM International Conference on Web Search and Data Mining, WSDM '14, pp. 263-272.  ... 
doi:10.1007/978-3-319-93935-3_9 fatcat:omj2eork2zgq7nvm7icxmxweey

Path-based knowledge reasoning with textual semantic information for medical knowledge graph completion [article]

Yinyu Lan, Shizhu He, Xiangrong Zeng, Shengping Liu, Kang Liu, Jun Zhao
2021 arXiv   pre-print
MedKGC can find new facts based on the exited knowledge in the KGs. The path-based knowledge reasoning algorithm is one of the most important approaches to this task.  ...  By using the pre-trained model BERT, combining the textual semantic representations of the entities and the relationships, we model the task of symbolic reasoning in the medical KG as a numerical computing  ...  Data preparation This article builds an experimental dataset on the public Chinese symptom knowledge graph, and uses the random walk method to obtain the path between entity pairs.  ... 
arXiv:2105.13074v2 fatcat:u3fm2nxlubeitkwzvvkuf3v7pu

Mobile Visual Location Recognition

Georg Schroth, Robert Huitl, David Chen, Mohammad Abu-Alqumsan, Anas Al-Nuaimi, Eckehard Steinbach
2011 IEEE Signal Processing Magazine  
This would allow us to avoid mapping a building over and over. This further allows for adapting to the environment and to weight reliable visual cues.  ...  Figure 6 .Figure 6 . 66 25 : mAP for the unmodified dataset using Bag-of-Feature retrieval over visual vocabulary size S. 26: mAP for normal dataset using text-related retrieval over visual vocabulary  ... 
doi:10.1109/msp.2011.940882 fatcat:7vzjij4qvjb5hcc2znqp7ginuy

VQuAnDa: Verbalization QUestion ANswering DAtaset [chapter]

Endri Kacupaj, Hamid Zafar, Jens Lehmann, Maria Maleshkova
2020 Lecture Notes in Computer Science  
Question Answering (QA) systems over Knowledge Graphs (KGs) aim to provide a concise answer to a given natural language question.  ...  We base VQuAnDa on a commonly used large-scale QA dataset -LC-QuAD, in order to support compatibility and continuity of previous work.  ...  For building the vocabularies we use a simple one-hot encoding approach. For all the models we use Adam optimizer, and cross entropy as a loss function.  ... 
doi:10.1007/978-3-030-49461-2_31 fatcat:35rx4av23rarzotsiqrawbcqym

VQuAnDa Paper [article]

Endri Kacupaj
2020 figshare.com  
Question Answering (QA) systems over Knowledge Graphs (KGs) aim to provide a concise answer to a given natural language question.  ...  We base VQuAnDa on a commonly used large-scale QA dataset – LC-QuAD, in order to support compatibility and continuity of previous work.  ...  over knowledge graphs Dataset KG Size Year Formal Rep.  ... 
doi:10.6084/m9.figshare.13148276.v1 fatcat:nssmhhd25jhtzisgv5oax677li

A Real-time Linked Dataspace for the Internet of Things: Enabling "Pay-As-You-Go" Data Management in Smart Environments

Edward Curry, Wassim Derguech, Souleiman Hasan, Christos Kouroupetroglou, Umair ul Hassan
2019 Future generations computer systems  
kg CO 2 Thermi, Greece 16 Mts ∼2.3 million 11 30% water reduction - Engineering Building, NUI Galway 16 Mts ∼36 million 8 174 m 3 177 kg CO 2 8089 m 3 8251 kg CO 2 Coláiste na Coiribe  ...  This work builds on past efforts to use dataspaces in Building Data Management [13] , Energy Data Management [14] , and System of Systems [37] .  ...  He has authored or coauthored over 150 scientific articles in journals, books, and international conferences.  ... 
doi:10.1016/j.future.2018.07.019 fatcat:myeu6dkduze6xmrc34iwfytwwi

Rich Queries on Encrypted Data: Beyond Exact Matches [chapter]

Sky Faber, Stanislaw Jarecki, Hugo Krawczyk, Quan Nguyen, Marcel Rosu, Michael Steiner
2015 Lecture Notes in Computer Science  
Range and Boolean queries are supported, also for the OSPIR setting, by Pappas et al. [20] (building on the work of Raykova et al [22] ).  ...  A technique that has been suggested for resolving range queries in the SSE setting is order-preserving encryption (e.g., it is used in the CryptDB system [21]).  ...  Note that we support substring and wildcard queries simultaneously over a given column using a single shared index.  ... 
doi:10.1007/978-3-319-24177-7_7 fatcat:fcjyyeqaifg7xnfa4azfom3sly

CROssBAR: comprehensive resource of biomedical relations with knowledge graph representations

Tunca Doğan, Heval Atas, Vishal Joshi, Ahmet Atakan, Ahmet Sureyya Rifaioglu, Esra Nalbat, Andrew Nightingale, Rabie Saidi, Vladimir Volynkin, Hermann Zellner, Rengul Cetin-Atalay, Maria Martin (+1 others)
2021 Nucleic Acids Research  
based on simple non-programmatic user queries.  ...  However, different layers of the available data are produced using different technologies and scattered across individual computational resources without any explicit connections to each other, which hinders  ...  KGs are presented visually on web-browsers as flexible Cytoscape (30) networks.  ... 
doi:10.1093/nar/gkab543 pmid:34181736 fatcat:cdot5ur7qnen5fm25fmhlukqoq

Generalized Relation Learning with Semantic Correlation Awareness for Link Prediction [article]

Yao Zhang, Xu Zhang, Jun Wang, Hongru Liang, Wenqiang Lei, Zhe Sun, Adam Jatowt, Zhenglu Yang
2021 arXiv   pre-print
We perform comprehensive experiments on six benchmarks to demonstrate the superior capability of GRL in the link prediction task.  ...  In particular, GRL is found to enhance the existing link prediction models making them insensitive to unbalanced relation distributions and capable of learning unseen relations.  ...  The reason might be that the testing query is easy to be completed by finding KG paths on the few-shot relation datasets, such as NELL-ONE.  ... 
arXiv:2012.11957v2 fatcat:3bumbdyronbjbkv75uyp2akek4

Probabilistic latent semantic indexing

Thomas Hofmann
1999 Proceedings of the 22nd annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '99  
Retrieval experiments on a number of test collections indicate substantial performance gains over direct term matching metho d s a s w ell as over LSI.  ...  Probabilistic Latent Semantic Indexing is a novel approach to automated document indexing which is based on a statistical latent class model for factor analysis of count data.  ...  Although the use of elaborate ergonomic elements like computer graphics and visualization has proven to be extremely fruitful to facilitate and enhance information access, progress on the more fundamental  ... 
doi:10.1145/312624.312649 dblp:conf/sigir/Hofmann99 fatcat:wk7ktq7clff4vezs4z5b6ui4ku

Emerging Ubiquitous Knowledge Services [chapter]

Uichin Lee, Howon Lee, Bang Jung, Junehwa Song
2012 Ergonomics Design & Mgmt. Theory & Applications  
Also, we propose a set of desirable features of the ubiquitous knowledge service platforms based on our vision of the knowledge communications service (KCS).  ...  In this chapter, we review the key enabling technologies of ubiquitous knowledge services and the existing integrated platforms on sensor data collection, retrieval, and application services.  ...  While information visualization focuses on the use of computer-supported tools to derive new insights, knowledge visualization concentrates on transferring insights, experiences, attitudes, values, expectations  ... 
doi:10.1201/b12043-23 fatcat:bdeq3c5w5vdezbzkwt4rnx4lcm
« Previous Showing results 1 — 15 out of 3,134 results