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Memory Aware Query Routing in Interactive Web-Based Information Systems [chapter]

Florian Waas, Martin L. Kersten
2001 Lecture Notes in Computer Science  
We develop a simple and robust scheduling scheme that takes the currently memory resident data at each server into account and trades off memory re-use and execution time, reordering queries as necessary  ...  The architecture we propose here is specifically tailored to take advantage of the query characteristics.  ...  In all further experiments we use a look-ahead of 100 queries unless stated otherwise.  ... 
doi:10.1007/3-540-45754-2_11 fatcat:vioilet5bne7pllog4hvs4k3fy

QUEST

Anshuman Dutt, Sumit Neelam, Jayant R. Haritsa
2014 Proceedings of the VLDB Endowment  
At this juncture, there is a change of plan to P2 as we look ahead to IC5 (1.9E5 | 0.65%), and during this switching all the intermediate results produced by plan P1 are jettisoned.  ...  We will also highlight a compelling example where the optimizer makes the same qe estimate for a pair of similar-looking queries with only a miniscule difference in their query texts -however, in reality  ... 
doi:10.14778/2733004.2733036 fatcat:alk2ir7z4ze3ness4toey6zx3u

Anticipatory Driving for a Robot-Car Based on Supervised Learning [chapter]

Irene Markelić, Tomas Kulviĉius, Minija Tamosiunaite, Florentin Wörgötter
2009 Lecture Notes in Computer Science  
A car-like robot is trained by a human driver by constructing a database, where look ahead sensory information is stored together with action sequences.  ...  Prediction and Planning are essential elements of successful human driving, making them equally important for autonomously driving systems.  ...  For this reason we propose that an autonomously driving car should also be equipped with such capabilities as using look ahead and plan making, which is what we call anticipatory driving.  ... 
doi:10.1007/978-3-642-02565-5_15 fatcat:rqrzjqmwuvablmrd233lemioxa

Linked-Data based Constraint-Checking (LDCC) to support look-ahead planning in construction

Ranjith K. Soman, Miguel Molina-Solana, Jennifer K. Whyte
2020 Automation in Construction  
The LDCC method is intended to be used at look-ahead planning meetings to aid decision making.  ...  Look-ahead planning is often done manually [30] .  ... 
doi:10.1016/j.autcon.2020.103369 fatcat:dm4fllw77zcshi5jyuy27pyhxy

Plan bouquets

Anshuman Dutt, Jayant R. Haritsa
2014 Proceedings of the 2014 ACM SIGMOD international conference on Management of data - SIGMOD '14  
Overall, the bouquet approach provides novel guarantees that open up new possibilities for robust query processing.  ...  Selectivity estimates for optimizing OLAP queries often differ significantly from those actually encountered during query execution, leading to poor plan choices and inflated response times.  ...  At this juncture, there is a change of plan to P2 as we look ahead to IC5 (1.9E5 | 0.65%), and during this switching all the intermediate results (if any) produced thus far by plan P1 are jettisoned.  ... 
doi:10.1145/2588555.2588566 dblp:conf/sigmod/DuttH14 fatcat:nj6iiwhd5bcpfjegwb4wpimo4i

A simulation-based approach for dynamic process management at web service platforms

T. Madhusudan, Young-Jun Son
2005 Computers & industrial engineering  
Comparison of the look-ahead simulation for different scheduling policies with the current execution state provides guidelines for service execution in order to cope with system volatility.  ...  Recent research is focused on developing support technologies for web service discovery, on-demand service composition, and robust execution to facilitate web services based deployment of business processes  ...  The basic execution cycle of on-line look-ahead simulation for scheduling is: † Initiate world simulation for different sets of dispatching rules over a predefined planning horizon in the look-ahead manager  ... 
doi:10.1016/j.cie.2005.02.003 fatcat:nxjdrgogtffklgr23ge6mqqcri

Exploiting Vulnerabilities of Load Forecasting Through Adversarial Attacks [article]

Yize Chen, Yushi Tan, Baosen Zhang
2019 arXiv   pre-print
Load forecasting plays a critical role in the operation and planning of power systems.  ...  By using input features such as historical loads and weather forecasts, system operators and utilities build forecast models to guide decision making in commitment and dispatch.  ...  However, most research doesn't look into the robustness issues, and model performances under adversarial environements are rarely discussed [11, 23] .  ... 
arXiv:1904.06606v1 fatcat:d6nyrgcqyvd7pi2xrarzsv354u

A robust and energy efficient protocol for random walk in ad hoc networks with IEEE 802.11

Adnan Noor Mian, Roberto Beraldi, Roberto Baldoni
2008 Proceedings, International Parallel and Distributed Processing Symposium (IPDPS)  
This paper is about energy efficient and robust implementation of random walks in mobile wireless networks.  ...  We propose a robust, energy efficient distributed next hop selection algorithm. To evaluate the algorithm we present a simulation study performed with ns-2.  ...  We plan to implement mechanisms to avoid selecting such neighbors to make the protocol more robust. The proposed protocol is for a single random walk.  ... 
doi:10.1109/ipdps.2008.4536491 dblp:conf/ipps/MianBB08 fatcat:7p4lqmm665gulceckcuziklayi

A Semantic Data Grid for Satellite Mission Quality Analysis [chapter]

Reuben Wright, Manuel Sánchez-Gestido, Asunción Gómez-Pérez, María S. Pérez-Hernández, Rafael González-Cabero, Oscar Corcho
2008 Lecture Notes in Computer Science  
An initial implementation of one of the queries for Use Case 1 was looking for all planned events (DMOP event records) which were using the Radar Altimeter.  ...  A mission may last 10/15 years and since we are largely investigating anomalous behaviour not all useful queries will be known ahead of time.  ... 
doi:10.1007/978-3-540-88564-1_53 fatcat:mqcq6otfxfbx7bdaodtnkmcupy

The case for PIQL

Michael Armbrust, Nick Lanham, Stephen Tu, Armando Fox, Michael J. Franklin, David A. Patterson
2010 Proceedings of the 1st ACM symposium on Cloud computing - SoCC '10  
We propose PIQL, a Performance Insightful Query Language that allows developers to express many queries found on these websites while still providing strict bounds on the number of I/O operations that  ...  For complex queries, this approach often requires onerous explicit index management and imperative data lookup by the developer.  ...  Another place we plan to improve is implementing the consistency performance trade-offs discussed in Section 5.4. Additionally, we hope to make several performance improvements .  ... 
doi:10.1145/1807128.1807149 dblp:conf/cloud/ArmbrustLTFFP10 fatcat:jzcx2ti4zfcifk6abq3vzsxwfu

On agents and grids: Creating the fabric for a new generation of distributed intelligent systems

Y GIL
2006 Journal of Web Semantics  
Because semantic grids represent and reason about knowledge declaratively, additional capabilities typical of agents are then possible including learning, planning, self-repair, memory organization, meta-reasoning  ...  Why Grid: Limitations of Current Multi-Agent Systems for Robust and Sustainable Performance Robustness is a very important requirement for distributed problem solving of the kind performed by multi-agent  ...  It looked ahead as far as 72 hours, but only planned in detail the operations for the coming observation window.  ... 
doi:10.1016/j.websem.2006.03.002 fatcat:n2seqse7inff5c7nr2vd6kpxhi

On Agents and Grids: Creating the Fabric for a New Generation of Distributed Intelligent Systems

Yolanda Gil
2006 Social Science Research Network  
Because semantic grids represent and reason about knowledge declaratively, additional capabilities typical of agents are then possible including learning, planning, self-repair, memory organization, meta-reasoning  ...  Why Grid: Limitations of Current Multi-Agent Systems for Robust and Sustainable Performance Robustness is a very important requirement for distributed problem solving of the kind performed by multi-agent  ...  It looked ahead as far as 72 hours, but only planned in detail the operations for the coming observation window.  ... 
doi:10.2139/ssrn.3199331 fatcat:6uwn2cofu5bobbogv73d4ft2be

Vulnerabilities of Power System Operations to Load Forecasting Data Injection Attacks [article]

Yize Chen, Yushi Tan, Ling Zhang, Baosen Zhang
2019 arXiv   pre-print
This paper is the first attempt to bring up the security issues of load forecasting algorithms to our knowledge, and show that accurate load forecasting algorithm is not necessarily robust to malicious  ...  We also make our code open source as a public package for evaluating load forecasting robustness and security 1 . II.  ...  Attack Objectives We assume the attacker could only inject constrained attacks in the day-ahead planning stage.  ... 
arXiv:1906.04926v2 fatcat:kqgeqnahl5abpb7zvkbq3dwqmu

Coordination through querying in the youtopia system

Nitin Gupta, Lucja Kot, Gabriel Bender, Sudip Roy, Johannes Gehrke, Christoph Koch
2011 Proceedings of the 2011 international conference on Management of data - SIGMOD '11  
Users submit queries that come with explicit coordination constraints to be met by other queries in the system.  ...  That is, the queries coordinate their answers in the manner specified by the users.  ...  Our goal is to show that entangled queries are a clean, robust and powerful abstraction, and that they make it easy to implement coordination-driven applications which would be difficult to program using  ... 
doi:10.1145/1989323.1989490 dblp:conf/sigmod/GuptaKBRGK11 fatcat:lsfvnglysfbkpdg3djhygzyqt4

Active query forwarding in sensor networks

Narayanan Sadagopan, Bhaskar Krishnamachari, Ahmed Helmy
2005 Ad hoc networks  
ACQUIRE also incorporates a look-ahead parameter d in the following manner: intermediate nodes that handle the active query use information from all nodes within d hops in order to partially resolve the  ...  query.  ...  by a front-end query processor into an efficient query plan for in-network processing.  ... 
doi:10.1016/j.adhoc.2003.08.001 fatcat:u4nzqpkqcra55hrqbbz5nmvgui
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