Search Results - subject:"Algorithms"

Measuring the self-similarity exponent in Lévy stable processes of financial time series

Fernández-Martínez, M.; Sánchez-Granero, M.A.; … - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 21, pp. 5330-5345

Geometric method-based procedures, which will be called GM algorithms herein, were introduced in [M.A. Sánchez Granero … authors showed empirically that these algorithms, based on a geometrical approach, are more accurate than the classical … algorithms, especially with short length time series. The authors checked that GM algorithms are good when working with …

Persistent link: https://www.econbiz.de/10011060734

Constraint selection in a build-up interior-point cutting-plane method for solving relaxations of the stable-set problem

Engau, Alexander; Anjos, Miguel; Bomze, Immanuel - In: Mathematical Methods of Operations Research 78 (2013) 1, pp. 35-59

The stable-set problem is an NP-hard problem that arises in numerous areas such as social networking, electrical engineering, environmental forest planning, bioinformatics clustering and prediction, and computational chemistry. While some relaxations provide high-quality bounds, they result in...

Persistent link: https://www.econbiz.de/10010950099

Artificial Neural Networks

BARDAªUC, Leila; POPESCU, Andrei - In: Alma Mater University journal 6 (2013) 1, pp. 27-30

You do not have to look far and we can see that every electronic device is built around at least one processor which is a miniature brain, in the most simplified way (borrows a few features that help to control that device). Scientists try to simulate a brain to fully comply with the biological...

Persistent link: https://www.econbiz.de/10011066078

New investigation on diagnosing steam production systems from multivariate time series applied to thermal power plants

Blanco, J.M.; Vazquez, L.; Peña, F.; Diaz, D. - In: Applied Energy 101 (2013) C, pp. 589-599

One of the main aspects in energy conversion systems is to identify which time segment of instrumental recorded measurements allows accurate characterization of the system operation mode under a so-called “quasi steady-state”. In this paper, a diagnosis procedure on an existing steam...

Persistent link: https://www.econbiz.de/10011040399

Midway toward the 2 degree target: Adequacy and fairness of the Cancún pledges

Ha, Yuejiao; Teng, Fei - In: Applied Energy 112 (2013) C, pp. 856-865

Many countries pledged to reduce their greenhouse gas emissions by 2020 during the 2009 Copenhagen Accord and the 2010 Cancún Agreement. This paper evaluates the Cancún pledges from two aspects, namely, temperature increase and carbon Gini coefficient. The Model for the Assessment of...

Persistent link: https://www.econbiz.de/10011041350

Evolutionary generation of dispatching rule sets for complex dynamic scheduling problems

Pickardt, Christoph W.; Hildebrandt, Torsten; Branke, … - In: International Journal of Production Economics 145 (2013) 1, pp. 67-77

We propose a two-stage hyper-heuristic for the generation of a set of work centre-specific dispatching rules. The approach combines a genetic programming (GP) algorithm that evolves a composite rule from basic job attributes with an evolutionary algorithm (EA) that searches for a good assignment...

Persistent link: https://www.econbiz.de/10011043211

EMAIL SPAM DETECTION: A SYMBIOTIC FEATURE SELECTION APPROACH FOSTERED BY EVOLUTIONARY COMPUTATION

SOUSA, PEDRO; CORTEZ, PAULO; VAZ, RUI; ROCHA, MIGUEL; … - In: International Journal of Information Technology & … 12 (2013) 04, pp. 863-884

-spam filters. For such purpose, several Evolutionary Algorithms (EA) are explored as optimization engines able to enhance feature …

Persistent link: https://www.econbiz.de/10011011034

An adaptive routing approach for personal rapid transit

Schüpbach, Kaspar; Zenklusen, Rico - In: Mathematical Methods of Operations Research 77 (2013) 3, pp. 371-380

involved routing problems together with the fact that routing algorithms for PRT essentially have to run in real-time often …

Persistent link: https://www.econbiz.de/10010999808

An integrated production-inventory model with fluctuating demand and controllable deterioration rate

Dem, Himani; Singh, S.R. - In: International Journal of Logistics Economics and … 5 (2013) 2, pp. 132-148

In this article, we consider single-manufacturer-single buyer supply chain problem in which the manufacturer procures raw material from outside supplier and distributes the preset amount of produced finished goods to the buyer at a fixed-time interval in multiple deliveries. An integrated model...

Persistent link: https://www.econbiz.de/10010722732

Production scheduling problem with delivery considerations in a mono-product supply chain environment to minimise the total joint cost

Grunder, Olivier; Wang, Deyun; Moudni, Abdellah El - In: European Journal of Industrial Engineering 7 (2013) 5, pp. 615-634

This paper chooses a supply chain which involves multiple supply links as the studied object. In each supply link, we consider an integrated scheduling problem in which a set of identical jobs are first processed on a single machine, and then batch delivered to a customer by a transporter. Each...

Persistent link: https://www.econbiz.de/10010722757