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Labrinidis, Alexandros

Overview
Works: 28 works in 56 publications in 1 language and 674 library holdings
Genres: Conference proceedings 
Roles: Editor
Classifications: G70.212, 910.285
Publication Timeline
Key
Publications about Alexandros Labrinidis
Publications by Alexandros Labrinidis
Most widely held works by Alexandros Labrinidis
GeoSensor networks second international conference, GSN 2006, Boston, MA, USA, October 1-3, 2006 : revised selected and invited papers by D Hutchison( file )
14 editions published in 2008 in English and held by 446 libraries worldwide
MobiDE 2005 : proceedings of the Fourth ACM International Workshop on Data Engineering for Wireless and Mobile Access : June 12, 2005, Baltimore, Maryland, USA by 2005, Baltimore, Md.> International Workshop on Data Engineering for Wireless and Mobile Access. <4( Book )
8 editions published in 2005 in English and held by 65 libraries worldwide
MobiDE 2003 : proceedings of the Third ACM International Workshop on Data Engineering for Wireless and Mobile Access : September 19, 2003, San Diego, California, USA by ACM International Workshop on Data Engineering for Wireless and Mobile Access( Book )
6 editions published in 2003 in English and held by 61 libraries worldwide
Proceedings of the 2nd international workshop on data management for sensor networks August 29, 2005, Trondheim, Norway : held in conjuction with Very Large Data Bases, Trondheim 2005 by International Workshop on Data Management for Sensor Networks( file )
1 edition published in 2005 in English and held by 22 libraries worldwide
Proceedings of the 1st International Workshop on Data Management for Sensor Networks : in conjunction with VLDB 2004, 2004, Toronto, Canada, August 30-30, 2004 by International Workshop on Data Management for Sensor Networks( file )
1 edition published in 2004 in English and held by 19 libraries worldwide
Caching and materialization for web databases by Qiong Luo, Jie Xu Alexandros Labrinidis( Computer File )
3 editions published in 2010 in English and held by 14 libraries worldwide
Database systems have been driving dynamic web sites since the early 90s; nowadays, even seemingly static web sites employ a database back-end for personalization and advertising purposes. In order to keep up with the high demand fuelled by the rapid growth of the Internet, a number of caching and materialization techniques have been proposed for web databases over the years. The main goal of these techniques is to improve performance, scalability, and manageability of database-driven dynamic web sites, in a way that the quality of data is not compromised. Although caching and materialization are well understood concepts in the traditional database and networking/operating systems literature, the Web and web databases bring forth unique characteristics that warrant new techniques and approaches. In this survey, we adopt a data management point of view to describe the system architectures of web databases, and analyze the research issues related to caching and materialization in such architectures. We also present the state of the art in caching and materialization for web databases and organize current approaches according to the fundamental questions, namely how to store, how to use, and how to maintain cached/materialized web data. Finally, we associate work in caching and materialization for web databases to similar techniques in other related areas, such as data warehousing, distributed systems, and distributed databases
Proceedings of the 2nd international workshop on Data management for sensor networks by Alexandros Labrinidis( Computer File )
1 edition published in 2005 in English and held by 7 libraries worldwide
Proceeedings of the 1st international workshop on Data management for sensor networks in conjunction with VLDB 2004 by Alexandros Labrinidis( Computer File )
1 edition published in 2004 in English and held by 6 libraries worldwide
Proceedings of the 3rd workshop on Data management for sensor networks in conjunction with VLDB 2006 by Alexandros Labrinidis( Computer File )
1 edition published in 2006 in English and held by 6 libraries worldwide
GeoSensor networks : second international conference ; revised selected and invited papers by International Conference on GeoSensor Networks( Book )
1 edition published in 2008 in English and held by 3 libraries worldwide
MobiDE 2005 by ACM International Workshop on Data Engineering for Wireless and Mobile Access( Book )
1 edition published in 2005 in English and held by 3 libraries worldwide
Update Propagation Strategies for Improving the Quality of Data on the Web ( Article )
2 editions published in 2001 in Undetermined and English and held by 2 libraries worldwide
Dynamically generated web pages are ubiquitous today but their high demand for resources creates a huge scalability problem at the servers. Traditional web caching is not able to solve this problem since it cannot provide any guarantees as to the freshness of the cached data. A robust solution to the problem is web materialization, where pages are cached at the web server and constantly updated in the background, resulting in fresh data accesses on cache hits. In this work, we define Quality of Data metrics to evaluate how fresh the data served to the users is. We then focus on the update scheduling problem: given a set of views that are materialized, find the best order to refresh them, in the presence of continuous updates, so that the overall Quality of Data (QoD) is maximized. We present a QoD-aware Update Scheduling algorithm that is adaptive and tolerant to surges in the incoming update stream. We performed extensive experiments using real traces and synthetic ones, which show that our algorithm consistently outperforms FIFO scheduling by up to two orders of magnitude. Prepared through collaborative participation in the Advanced Telecommunications/Information Distribution Research Program (ATIRP) Consortium sponsored by the U.S. Army Research Laboratory under the Federated Laboratory Program, Cooperative Agreement DAAL01-96-2-0002. An abridged version of this work appears in the Proceedings of the 27th VLDB Conference, Roma, Italy, 2001
MobiDE 2006 : proceedings of the Fifth ACM International Workshop on Data Engineering for Wireless and Mobile Access : June 25, 2006, Chicago, Illinois, USA by 2006, Chicago, Ill.> International Workshop on Data Engineering for Wireless and Mobile Access. <5( Book )
1 edition published in 2006 in English and held by 2 libraries worldwide
Proceedings of the 3rd Workshop on Data Management for Sensor Networks : September 11, 2006, Seoul, Korea by ACM International Workshop on Data Management for Sensor Networks( Book )
1 edition published in 2006 in English and held by 2 libraries worldwide
MobiDE 2003 Data Engineering for Wireless and mobile access : Proceedings of the Third ACM International Workshop on Data Engineering for Wireless and Mobile Access, September 19, 2003, San Diego, California, USA by ACM International Workshop on Data Engineering for Wireless and Mobile Access( Book )
1 edition published in 2003 in English and held by 2 libraries worldwide
Reduction of materialized view staleness using online updates by Alexandros Labrinidis( Book )
1 edition published in 1998 in English and held by 1 library worldwide
Updating the materialized views stored in data warehouses usually implies making the warehouse unavailable to users. We propose MAUVE, a new algorithm for online incremental view updates that uses timestamps and allows consistent read-only access to the warehouse while it being updated. The algorithm propagates the updates to the views more often than the typical once a day in order to reduce view staleness. We have implemented MAUVE top of the Informix Universal Server and used a synthetic workload generator to experiment with various update workloads and different view update frequencies. Our results show that, all kinds of update streams benefit from more frequent view updates, instead of just once a day. However, there is a clear maximum for the view update frequency, for which view staleness is minimal
Ratio Rules: A New Paradigm for Fast, Quantifiable Data Mining ( Article )
1 edition published in 1998 in Undetermined and held by 1 library worldwide
A performance evaluation of online warehouse update algorithms by Alexandros Labrinidis( Book )
1 edition published in 1998 in English and held by 1 library worldwide
Data warehouse maintenance algorithms usually work off-line, making the warehouse unavailable to users. However, since most organizations require continuous operation, we need be able to perform the updates online, concurrently with user queries. To guarantee that user queries access a consistent view of the warehouse, online update algorithms introduce redundancy in order to store multiple versions of the data objects that are being changed. In this paper, we present an online warehouse update algorithm, that stores multiple versions of data as separate rows (vertical redundancy). We compare our algorithm to another online algorithm that stores multiple versions within each tuple by extending the table schema (horizontal redundancy). We have implemented both algorithms on top of an Informix Dynamic Server and measured their performance under varying workloads, focusing on their impact on query response times. Our experiments show that, except for a limited number of cases, vertical redundancy is a better choice, with respect to storage, implementation overhead, and query performance
Adaptive WebView Materialization ( file )
1 edition published in 2001 in English and held by 1 library worldwide
Dynamic content generation poses huge resource demands on web servers, creating a scalability problem. WebView Materialization, where web pages are cached and constantly refreshed in the background, has been shown to ameliorate the scalability problem without sacrificing data freshness. In this work we present an adaptive online algorithm to select which WebViews to materialize, that realizes the trade-off between Quality of Service and Quality of Data. Our algorithm performs very close to the static, off-line optimal algorithm, and, under rapid workload changes, it outperforms the optimal
 
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