Data integration is a significant challenge: relevant data objects are split across multiple information sources, and often owned by different organizations. The sources represent, maintain, and export the information using a variety of formats, interfaces and semantics. This paper addresses the issue of querying distributed data in a large scale context. We present a p2p information mediation ...

Profile-guided code transformations specialize program code according to the profile provided by execution on training data. Consequently, the performance of the code generated usind this feedback is sensitive to the selection of training data. Used in this fashion, the principle behind profileguided optimization techniques is the same as off-line learning commonly used in the field of machine ...

MOTIVATION Large alignments of ribosomal RNA sequences are maintained at various sites. New sequences are added to these alignments using a combination of manual and automatic methods. We examine the use of profile alignment methods for rRNA alignment and try to optimize the choice of parameters and sequence weights. RESULTS Using a large alignment of eukaryotic SSU rRNA sequences as a test c...

In this paper, optimization and control of a tubular reactor for thermal bulk post-polymerization of styrene have been investigated. By using the reactor mathematical model, static and dynamic simulations are carried out. Based on an objective function including polymer conversion and polydispersity, reactor optimal temperature profile has been obtained. In the absence of model mismatch, de...

The advent of data science has spurred interest in estimating properties of distributions over large alphabets. Fundamental symmetric properties such as support size, support coverage, entropy, and proximity to uniformity, received most attention, with each property estimated using a different technique and often intricate analysis tools. We prove that for all these properties, a single, simple...

(2010) Exploration and optimization of user experience in viewing videos on a mobile phone. Notice: Changes introduced as a result of publishing processes such as copy-editing and formatting may not be reflected in this document. For a definitive version of this work, please refer to the published source: Compared with viewing videos on PCs or TVs, mobile users have different experiences in vie...

As part of the winning team in the Sony legged robot league of the RoboCup 2003 international robotic soccer competition, we used automatic gait optimisation. This was the first such technique seen in the competition and allowed an improvement in both speed and stability over previous gaits. Additionally, the technique was fast enough to run on-site at the competition, optimising the walk for t...

Number: 007-0582 Abstract Title: A Closed-loop Supply Chain Model for Managing Overall Optimization of Eco-efficiencyTitle: A Closed-loop Supply Chain Model for Managing Overall Optimization of Eco-efficiency Authors: Name: Wei D. Solvang, Ziqiong Deng, Bjoern Solvang Organization: Department of Industrial Engineering, Narvik University College, Norway Address: Lodve Langes gate 2, pb. 385, N-8...

Mixed (SvO2) or central (ScvO2) venous oxygen saturation is frequently used to evaluate the adequacy of global tissue oxygenation in critically ill patients. The aim of this review is to discuss the literature regarding S(c)vO2 measurement and S(c)vO2 directed therapy. Both reductions in oxygen delivery and increases in oxygen consumption without subsequent adequate rise in cardiac output can r...

Dynamic optimization technology improves its target system on the fly according to the system status. There are some studies on microprocessors to dynamically improve performance and energy efficiency. We are investigating a software-based dynamic optimization mechanism on a multi-threaded processor to improve performance. Optimization is performed on binary codes. To optimize binary codes dyna...