Browsing by Author "Zeinalipour-Yazti, Demetrios"
Now showing items 1-15 of 15
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Bridging Quantities in Tables and Text
Ibrahim, Yusra; Riedewald, Mirek; Weikum, Gerhard; Zeinalipour-Yazti, Demetrios (2019)There is a wealth of schema-free tables on the Web, holding valuable information about quantities on sales and costs, environmental footprint of cars, health data and more. Table content can only be properly interpreted ...
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Article
Continuous decaying of telco big data with data postdiction
Costa, Constantinos; Konstantinidis, Andreas; Charalampous, Andreas; Zeinalipour-Yazti, Demetrios; Mokbel, Mohamed F. (2019)In this paper, we present two novel decaying operators for Telco Big Data (TBD), coined TBD-DP and CTBD-DP that are founded on the notion of Data Postdiction. Unlike data prediction, which aims to make a statement about ...
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Conference Object
Decaying Telco Big Data with Data Postdiction
Costa, Constantinos; Charalampous, Andreas; Konstantinidis, Andreas; Zeinalipour-Yazti, Demetrios; Mokbel, Mohamed F. (2018)In this paper, we present a novel decaying operator for Telco Big Data (TBD), coined TBD-DP (Data Postdiction). Unlike data prediction, which aims to make a statement about the future value of some tuple, our formulated ...
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EPUI: Experimental Platform for Urban Informatics
Ge, Xiaoyu; Chrysanthis, Panos K.; Pelechrinis, Konstantinos; Zeinalipour-Yazti, Demetrios (Association for Computing Machinery, 2018)Recent studies in urban navigation have revealed new demands (e.g., diversity, safety, happiness, serendipity) for the navigation services that are critical to providing useful recommendations to travelers. This exposes ...
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FMS: Managing Crowdsourced Indoor Signals with the Fingerprint Management Studio
Angelidou, Marileni; Costa, Constantinos; Nikitin, Artyom; Zeinalipour-Yazti, Demetrios (2018)In this demonstration paper, we present an integrated indoor signal management studio, coined Fingerprint Management Studio (FMS), which provides a spatio-temporal platform to: (i) manage the collection of location-dependent ...
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Future Directions for Indoor Information Systems: A Panel Discussion
Zeinalipour-Yazti, Demetrios (2018)Geographic Information Systems (GIS) have enabled a vast range of applications in outdoor spaces, but these systems are bound to accurate localization technologies that are not available inside buildings where people carry ...
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Generating Semantic Aspects for Queries
Berberich, Klaus; Gupta, Dhruv; Strötgen, Jannik; Zeinalipour-Yazti, Demetrios (2019)
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Conference Object
Generating Semantic Aspects for Queries
Berberich, Klaus; Gupta, Dhruv; Strötgen, Jannik; Zeinalipour-Yazti, Demetrios (Association for Computing Machinery, 2018)We present an approach to explore news archives by automatically generating semantic aspects for their navigation. Given a keyword query as an input, we utilize semantic annotations present in the pseudo-relevant set of ...
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Article
IoT Data Prefetching in Indoor Navigation SOAs
Konstantinidis, Andreas; Irakleous, Panagiotis; Georgiou, Zacharias; Zeinalipour-Yazti, Demetrios; Chrysanthis, Panos K. (2018)Internet-based Indoor Navigation Service-Oriented Architectures (IIN-SOA) organize signals collected by IoT-based devices to enable a wide range of novel applications indoors, where people spend 80--90% of their time. In ...
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A Qualitative and Quantitative Evaluation of Differential Signal Strength Fingerprinting Methods
Laoudias, Christos; Kim, Sunwoo; Zeinalipour-Yazti, Demetrios; Panayiotou, Christos G. (2019)Indoor location systems that rely on WiFi signal strength values from the existing building infrastructure deliver adequate accuracy with no installation cost at the expense of time and effort to populate the signal database. ...
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A Qualitative and Quantitative Evaluation of Differential Signal Strength Fingerprinting Methods
Laoudias, Christos; Kim, Sunwoo; Zeinalipour-Yazti, Demetrios; Panayiotou, Christos G. (2019)Indoor location systems that rely on WiFi signal strength values from the existing building infrastructure deliver adequate accuracy with no installation cost at the expense of time and effort to populate the signal database. ...
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TBD-DP: Telco Big Data Visual Analytics with Data Postdiction
Costa, Constantinos; Charalampous, Andreas; Konstantinidis, Andreas; Zeinalipour-Yazti, Demetrios; Mokbel, Mohamed F. (2018)In this demonstration paper, we present the TBD-DP operator, which relies on existing Machine Learning (ML) algorithms to abstract Telco Big Data (TBD) into compact models that can be stored and queried when necessary. Our ...
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Telco Big Data Research and Open Problems
Costa, Constantinos; Zeinalipour-Yazti, Demetrios (2019)A telecommunication company (telco) is traditionally only perceived as the entity that provides telecommunication services, such as telephony and data communication access to users. However, the radio and backbone ...
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Telco Big Data: Current State Future Directions
Costa, Constantinos; Zeinalipour-Yazti, Demetrios (2018)A Telecommunication company (Telco) is traditionally only perceived as the entity that provides telecommunication services, such as telephony and data communication access to users. However, the radio and backbone ...
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Towards Robust Methods for Indoor Localization using Interval Data
Ramdani, Nacim; Zeinalipour-Yazti, Demetrios; Karamousadakis, Michalis; Panayides, Andreas (2019)Indoor localization has gained an increase in interest recently because of the wide range of services it may provide by using data from the Internet of Things. Notwithstanding the large variety of techniques available, ...