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The SPADES Framework for Scalable Management of Spatio-textual Data

Akrivi Vlachou, Christos Doulkeridis, Nikolaos Koutroumanis, Dimitrios Poulopoulos, Kjetil Nørvåg
2020 Panhellenic Conference on Informatics  
This paper presents the research activities in the context of the SPADES project for scalable indexing and processing of big spatial and spatio-textual data.  ...  We present an indexing layer that supports spatio-textual data, as well as other data types: spatio-temporal, multidimensional as well as semantic data represented in RDF.  ...  ACKNOWLEDGMENTS This project has received funding from the Hellenic Foundation for Research and Innovation (HFRI) and the General Secretariat for Research and Technology (GSRT), under grant agreement No  ... 
doi:10.1145/3437120.3437293 dblp:conf/pci/VlachouDKPN20 fatcat:hngdbsr2zfgu3mjrg35lko63ju

Clue-based spatio-textual query

Junling Liu, Ke Deng, Huanliang Sun, Yu Ge, Xiaofang Zhou, Christian S. Jensen
2017 Proceedings of the VLDB Endowment  
Motivated by this observation, this work investigates clue-based spatio-textual query which allows user providing clue, i.e., some nearby POIs and the spatial relationships between them, in POI retrieval  ...  This work has deliberately designed data-quality-tolerant spatio-textual context similarity metric to cope with various data quality problems in both the clue and the POI database.  ...  In addition, the clustering techniques based on spatio-textual relevance have been investigated [8] . Our clue-based spatio-textual query differs from the existing spatio-textual queries.  ... 
doi:10.14778/3055540.3055546 fatcat:gwk43dhasre2vjis7bydrloyji

Distributed Publish/Subscribe Query Processing on the Spatio-Textual Data Stream [article]

Zhida Chen, Gao Cong, Zhenjie Zhang, Tom Z.J. Fu, Lisi Chen
2017 arXiv   pre-print
However, the explosive growth of data scale and user base has posed challenges to the existing centralized publish/subscribe systems for spatio-textual data streams.  ...  Such spatio-textual data stream contains valuable information for millions of users with various interests on different keywords and locations.  ...  and Research (A*STAR).  ... 
arXiv:1612.02564v4 fatcat:dsyogfmk5fg63gqptkpnichpt4

Tornado

Ahmed R. Mahmood, Saleh Basalamah, Ahmed M. Aly, Thamir Qadah, El Kindi Rezig, Anas Daghistani, Amgad Madkour, Ahmed S. Abdelhamid, Mohamed S. Hassan, Walid G. Aref
2015 Proceedings of the VLDB Endowment  
In addition to keywords, higher-level textual concepts are identified and are semantically matched against spatio-textual queries.  ...  We demonstrate a prototype of Tornado running against real Twitter streams, where the users can register continuous or snapshot spatio-textual queries using a map-assisted queryinterface.  ...  distance joins), textual similarity and semantic matching predicates, limited history, and temporal predicates.  ... 
doi:10.14778/2824032.2824126 fatcat:adjma2ee2neuhfalxcyxrcnlsa

Spatio-textual similarity joins

Panagiotis Bouros, Shen Ge, Nikos Mamoulis
2012 Proceedings of the VLDB Endowment  
Given a collection of objects that carry both spatial and textual information, a spatio-textual similarity join retrieves the pairs of objects that are spatially close and textually similar.  ...  In this paper, we combine ideas from state-of-the-art spatial distance join and set similarity join methods and propose efficient algorithms that take into account both spatial and textual constraints.  ...  However, to our knowledge, there is only one work ( [3] ) on spatio-textual similarity joins, where in fact the problem is defined differently; given two datasets R and S, the best match in S for each  ... 
doi:10.14778/2428536.2428537 fatcat:qg2c5frgn5hsjcqreikb5ik73m

Querying Geo-Textual Data

Gao Cong, Christian S. Jensen
2016 Proceedings of the 2016 International Conference on Management of Data - SIGMOD '16  
With a focus on different types of keyword-based queries on geo-textual data, the tutorial also explores topics such as continuous queries on streaming geo-textual data, queries that retrieve attractive  ...  Over the past decade, we have moved from a predominantly desktop based web to a predominantly mobile web, where users most often access the web from mobile devices such as smartphones.  ...  Given a set of geotextual objects, a distance threshold, and a text similarity threshold, the spatio-textual similarity join query  ... 
doi:10.1145/2882903.2912572 dblp:conf/sigmod/CongJ16 fatcat:dyrffsyirvh3jk74mqb6qsos3m

MPEG-7 MDS Content Description Tools and Applications [chapter]

Ana B. Benitez, Di Zhong, Shih-Fu Chang, John R. Smith
2001 Lecture Notes in Computer Science  
access, and user interaction.  ...  The parts of the MPEG-7 standard are systems -transmission and encoding of MPEG-7 descriptions and tools -, DDL -description definition language based on XML-Schema -, video -Ds and DSs for video data  ...  Users can enter textual annotations for the objects. AMOS accepts queries in the form of sketches or examples and returns similar video objects based on different features and relations.  ... 
doi:10.1007/3-540-44692-3_6 fatcat:eohtfg7axzcj3kltxriunhyoay

Preference-Aware Top-k Spatio-Textual Queries [chapter]

Yunpeng Gao, Yao Wang, Shengwei Yi
2016 Lecture Notes in Computer Science  
Moreover, spatio-textual objects (i.e., hotels) are ranked based on the features of facilities (i.e., restaurants) in their neighborhood.  ...  Moreover, we extend our algorithm for processing spatio-textual preference queries based on alternative score definitions under a unified framework.  ...  ), and is co-financed by the European Social Fund (ESF) and the Greek State.  ... 
doi:10.1007/978-3-319-47121-1_16 fatcat:o5tvvnp7jffsxd4rvi7bkarica

FlexTrack: A System for Querying Flexible Patterns in Trajectory Databases [chapter]

Marcos R. Vieira, Petko Bakalov, Vassilis J. Tsotras
2011 Lecture Notes in Computer Science  
Users can interactively select spatio-temporal predicates to construct such pattern queries using a hierarchy of regions that partition the spatial domain.  ...  Such queries are composed of a sequence of simple spatio-temporal predicates, e.g., range and nearest-neighbors, as well as complex motion pattern predicates, e.g., predicates that contain variables and  ...  Acknowledgements: This research was partially supported by NSF IIS grants 0705916, 0803410 and 0910859. Vieira's work was funded by a CAPES/Fulbright Ph.D fellowship.  ... 
doi:10.1007/978-3-642-22922-0_34 fatcat:klny35wkdfd2hkhwuxyzsybqmu

On querying and mining semantic-aware mobility timelines

Stylianos Sideridis, Nikos Pelekis, Yannis Theodoridis
2016 International Journal of Data Science and Analytics  
Our experimental study on realistic synthetic data including synchronized raw (i.e., GPS log) and semantic (i.e., diaries) information verifies the effectiveness and efficiency of the proposed framework  ...  (SIGKDD Explor 15 (1) :23-32, 2013), in this paper, we present a unified framework for the management and the analysis of LifeSteps, i.e., data objects about human mobility including both (raw) spatio-temporal  ...  More specifically, given two sets of solutions and a wildcard (i.e., '>' or '*'), the combine function joins the two sets on o_id, timeline_id fields and then based on the wildcard, it imposes the continuation  ... 
doi:10.1007/s41060-016-0030-1 dblp:journals/ijdsa/SideridisPT16 fatcat:jrig2nyj4ncufgwxrd7lfv6koe

Social-Sensor Composition for Tapestry Scenes

Tooba Aamir, Hai Dong, Athman Bouguettaya
2020 IEEE Transactions on Services Computing  
Our major contribution lies on proposing a context and direction-aware spatio-temporal clustering and recommendation approach for selecting a set of temporally and semantically similar services to compose  ...  Analytical results based on real datasets are presented to demonstrate the performance of the proposed approach.  ...  Semantic similarity is based on the textual similarity 314 between semantic annotations of the services and the query 315 description.  ... 
doi:10.1109/tsc.2020.2974741 fatcat:wwmzqkvutjfwzecoaz7guo7zay

SVS-JOIN: Efficient Spatial Visual Similarity Join over Multimedia Data [article]

Chengyuan Zhang, Ruipeng Chen, Lei Zhu, Zuping Zhang, Fang Huang, Yunwu Lin
2018 arXiv   pre-print
Then we introduce a baseline inspired by the method for textual similarity join and a extension named SVS-JOIN_G which applies spatial grid strategy to improve the efficiency.  ...  We propose the definition of SVS-JOIN at the first time and present how to measure geographical similarity and visual similarity.  ...  Set Similarity Joins In recent years, lots of researchers paid attentions on the problem of spatial textual similarity join.  ... 
arXiv:1810.00549v1 fatcat:ic6jue5vizflvacrdt6fqiwej4

Large-scale Analysis of Event Data

Stefan Hagedorn, Kai-Uwe Sattler, Michael Gertz
2015 Workshop Grundlagen von Datenbanken  
clustering.  ...  With the availability of numerous sources and the development of sophisticated text analysis and information retrieval techniques, more and more spatio-temporal data are extracted from texts such as news  ...  In this paper, we consider the spatio-temporal aspect of events for determining similarities, i.e., we focus on the similarity of their respective location and/or time of occurrence.  ... 
dblp:conf/gvd/HagedornSG15 fatcat:bbywlntcffgz7iyqaj6op7chcu

A Survey on Spatio-temporal Data Analytics Systems [article]

Md Mahbub Alam and Luis Torgo and Albert Bifet
2021 arXiv   pre-print
Due to the surge of spatio-temporal data volume, the popularity of location-based services and applications, and the importance of extracted knowledge from spatio-temporal data to solve a wide range of  ...  , and (3) programming languages and software tools for processing spatio-temporal data.  ...  It supports a number of spatial operations (such as range, kNN, range-join, and kNN-join) and a few spatial analysis functions (such as clustering, skyline computation, and spatio-textual topic summarization  ... 
arXiv:2103.09883v1 fatcat:ndpqz67bvnghpng36o3liqlr2q

Analyzing Refugee Migration Patterns Using Geo-tagged Tweets

Franziska Hübl, Sreten Cvetojevic, Hartwig Hochmair, Gernot Paulus
2017 ISPRS International Journal of Geo-Information  
Whereas trajectory extraction suffers from data scarcity, hashtag-based topical clustering draws a clearer picture about general refugee routes and is able to find geographic areas of high tweet activities  ...  Identified spatio-temporal clusters can complement migration flow data published by international authorities, which typically come at the aggregated (e.g., national) level.  ...  Acknowledgments: The first author wishes to express her gratitude and sincere thanks to the Austrian Marshall Plan Foundation, which funded a research visit at the University of Florida through a Marshall  ... 
doi:10.3390/ijgi6100302 fatcat:vzdcdvhcn5a3rekth252aqu334
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