ppxscal/embedding_network huggingface dataset:
Performance analysis of a configured to order business with a variable product configuration recipe
Authors: Soumyadip Ghosh, Tom Ervolina, Young M. Lee, Barun Gupta
Venue: Proceedings of the 37th conference on Winter simulation (2005)

We study a complex Configured to Order (CTO) business operating under variable product configuration recipes and high component commonality within product Bills of Materials. In particular, we conduct a series of simulation experiments to compare certain supply chain designs and investigate how their performance changes with changing variability of product configurations. The results indicate that under higher variability and component commonality conditions, a supply chain design that lays more emphasis on tracking the evolution of component demands and inventory positions performs better.
Aggregation Pheromone Density Based Clustering
Authors: Megha Kothari, Susmita Ghosh, Ashish Ghosh
Venue: Proceedings of the 9th International Conference on Information Technology (2006)

Ants, bees and other social insects deposit pheromone (a type of chemical) in order to communicate between the members of their community. Pheromone that causes clumping or clustering behavior in a species and brings individuals into a closer proximity is called aggregation pheromone. This paper presents a new algorithm (called APC) for clustering data set based on this property of aggregation pheromone found in ants. At each location of data point an ant is placed, and the ants are allowed to move in the search space to find points with higher pheromone density. The movement of an ant is governed by the amount of pheromone deposited at different points of the search space. If the pheromone density is more at a point, more ants are attracted towards this point. This leads to the formation of homogenous groups of data. The proposed algorithm is evaluated on a number of well-known benchmark data sets using different cluster validity measures. Results are compared with those obtained using average linkage clustering algorithm and are found to be better and robust.
Eye & Why: A Prototype for Learning Objects Visualization in Virtual Environment
Authors: ASM Mahfujur Rahman, Abdulmotaleb El Saddik
Venue: Proceedings of the Eighth IEEE International Symposium on Multimedia (2006)

In this paper, we have introduced a 3D Car gaming metaphor, an interactive interface for searching learning objects from distributed search repositories. By analyzing the semantic information of the search results, the metaphor creates groups and presents them as virtual roads, where each rendered traffic sign corresponds to the visual representation of a learning object. The road network based learning object visualization scheme assists the learner in realizing the relationships (if one exists) among the displayed results. Hence, the learner would be able to discard or explore a group of information very easily from the rendered visual relationship constructs, thus resulting in an effective information navigation process. Additionally, the game motivated car metaphor employs customized and interactive 3D visual schemes to make the learning and navigational process more entertaining.
Applicability of IEEE 1219 within Correctiev Maintenance
Authors: Mira Kajko-Mattsson
Venue: Proceedings of the International Conference on Software Engineering Advances (2006)

The IEEE 1219 standard is too general. It proposes one generic process model for all maintenance categories. However, maintenance categories differ too much. Hence, they cannot be reflected in one generic model. In this paper, we match Corrective Maintenance Maturity Model and parts of Evolution and Maintenance Maturity Model against the IEEE 1219 standard. Our results show that the IEEE 1219 standard must be revised to properly reflect the domain of corrective maintenance within industry.
The meshDVNet wireless mesh network test-bed
Authors: Luigi Iannone, Konstantin Kabassanov, Serge Fdida
Venue: Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation characterization (2006)

This paper aims to present MeshDVNet, a Wireless Mesh Network (WMN)test-bed designed, built, and deployed by the LIP6 laboratory of Université Paris VI. MeshDVNet uses Wireless Mesh Routers (WMR), called MeshDVBox, which have been built using commercial components and open source software. On this platform, routing is performed by MeshDV, our custom routing framework, designed to take full advantage of WMNs' architecture. MeshDVBoxes are able to form a mesh backbone while performing also gateway advertising and natively integrating clients' mobility management.
Interoperability Support between MPEG-7/21 and OWL in DS-MIRF
Authors: Chrisa Tsinaraki, Panagiotis Polydoros, Stavros Christodoulakis
Venue: IEEE Transactions on Knowledge and Data Engineering (2007)

In this paper, we focus on interoperable semantic multimedia services that are offered in open environments such as the Internet. The use of well-accepted standards is of paramount importance for interoperability support in open environments. In addition, the semantic description of multimedia content utilizing domain ontologies is very useful for indexing, query specification, retrieval, filtering, user interfaces, and knowledge extraction from audiovisual material. With the MPEG-7 and MPEG-21 standards dominating the multimedia content and service description domain and OWL dominating the ontology description languages, it is important to establish a framework that allows these standards to interoperate. We describe here the DS-MIRF Framework, a software engineering framework that facilitates the development of knowledge-based multimedia applications such as multimedia information retrieval, filtering, browsing, interaction, knowledge extraction, segmentation, and content description. DS-MIRF supports interoperability of OWL with the MPEG-7/21 so that domain and application ontologies expressed in OWL can be transparently integrated with MPEG-7/21 metadata. This allows applications that recognize and use the constructs provided by MPEG-7/21 to make use of domain and application ontologies, resulting in more effective retrieval and user interaction with the audiovisual material. We also present a retrieval evaluation methodology and comparative retrieval results.
An Adaptable Time Warping Distance for Time Series Learning
Authors: Remi Gaudin, Nicolas Nicoloyannis
Venue: Proceedings of the 5th International Conference on Machine Learning and Applications (2006)

Most machine learning and data mining algorithms for time series datasets need a suitable distance measure. In addition to classic p-norm distance, numerous other distance measures exist and the most popular is Dynamic Time Warping. Here we propose a new distance measure, called Adaptable Time Warping (ATW), which generalizes all previous time warping distances. We present a learning process using a genetic algorithm that adapts ATW in a locally optimal way, according to the current classification issue we have to resolve. It's possible to prove that ATW with optimal parameters is at least equivalent or at best superior to the other time warping distances for all classification problems. We show this assertion by performing comparative tests on two real datasets. The originality of this work is that we propose a whole learning process directly based on the distance measure rather than on the time series themselves.
FPGA Implementation of Embedded Cruise Control and Anti-Collision Radar
Authors: Sebastien Le Beux, Philippe Marquet, Ouassila Labbani, Jean-Luc Dekeyser
Venue: Proceedings of the 9th EUROMICRO Conference on Digital System Design (2006)

The ModEasy project seeks to develop techniques and software tools to aid in the development of reliable microprocessor based electronic (embedded) systems using advanced development and verification systems. The tools are to be evaluated in practical domains such as the automotive sector for reactive cruise control and anti-collision radar. We choose to define specific IPs using FPGA techniques to cover this application domain. This paper presents the implementation of such a complex and safety application on a single FPGA. The target system is composed of a reactive cruise control, a detection radar and the associated treatments
Logcrypt: forward security and public verification for secure audit logs
Authors: Jason E. Holt
Venue: Proceedings of the 2006 Australasian workshops on Grid computing and e-research - Volume 54 (2006)

Logcrypt provides strong cryptographic assurances that data stored by a logging facility before a system compromise cannot be modified after the compromise without detection. We build on prior work by showing how log creation can be separated from log verification, and describing several additional performance and convenience features not previously considered.
Overcoming some of the issues in maintaining large urban area 3D models via a web browser
Authors: John Counsell, Steve Smith, Andrew Richman
Venue: Proceedings of the conference on Information Visualization (2006)

This paper discusses recent work, in the VEPs Interreg project, that has been examining how to optimise operator based digital 3D modelling, of urban and rural environments, where the increasing availability of highly accurate LiDAR scanning offers appropriate remote sensed data. From this data bare earth digital terrain models (DTMs) can be processed semi-automatically, then draped with aerial imagery. Although both the resulting DTMs and geo-referenced aerial photography are of increasing detail and availability, buildings and similar structures are difficult to automatically extract at a level of detail that provides a credible sense of presence at street level. The LiDAR data itself is currently not captured often or extensively enough or at a sufficient level of detail that it could be relied on to keep VR analogues of real places up to date through an automated process alone, without additional modelling. Significant costs in modelling and updating urban settings to convey presence thus remain, be it through a combination of photogrammetry, CAD drawings and manual editing. It is argued that these costs are likely to limit large area 3D modelling to either broad brush overviews (as provided by Google Earth) or to credible presence models in those few locations where the high cost is justifiable, but in which, once the primary purpose of the model has been served, acceptance of the continuing cost of maintenance to reflect change is unlikely. Where updating of high presence models does happen this paper puts forward the view that currently, due to cost, it is likely to be piecemeal and take place over a long period of time. The paper describes one approach to reducing these costs by empowering heterogeneous groups of people to share the tasks of digitising and updating buildings that convey a credible sense of presence.
Multi-Path QoS Routing with Power Control in TDMA-Based Mobile Ad Hoc Networks
Authors: Yuan Li, XinMeng Chen, Dan Yu
Venue: Proceedings of the First International Conference on Innovative Computing, Information and Control - Volume 1 (2006)

With the development of mobile ad hoc network (MANET), quality of service (QoSj routing becomes more and more important. Power control scheme will decrease the interference between paths and conserve energy at hosts. But, the bandwidth evaluation will be more difficult due to the dynamic transmitting power. In this paper, we propose a multi-path QoS routing with power control (MQRPC) in TDMA-based MANETs. MQRPC can provide QoS guarantee and conserve energy by power control, which takes into account both the transmit power and the residual energy of the hosts along the multiple disjoint paths from a source to a destination. Simulation results show that MQRPC has good network performance and balances the energy consumption of hosts.
A Visual Vocabulary for Flower Classification
Authors: Maria-Elena Nilsback, Andrew Zisserman
Venue: Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 2 (2006)

We investigate to what extent 'bag of visual words' models can be used to distinguish categories which have significant visual similarity. To this end we develop and optimize a nearest neighbour classifier architecture, which is evaluated on a very challenging database of flower images. The flower categories are chosen to be indistinguishable on colour alone (for example), and have considerable variation in shape, scale, and viewpoint. We demonstrate that by developing a visual vocabulary that explicitly represents the various aspects (colour, shape, and texture) that distinguish one flower from another, we can overcome the ambiguities that exist between flower categories. The novelty lies in the vocabulary used for each aspect, and how these vocabularies are combined into a final classifier. The various stages of the classifier (vocabulary selection and combination) are each optimized on a validation set. Results are presented on a dataset of 1360 images consisting of 17 flower species. It is shown that excellent performance can be achieved, far surpassing standard baseline algorithms using (for example) colour cues alone.
Array pattern estimation from amplitude measurements on arbitrary near-field surfaces
Authors: G. T. Poulton
Venue: Proceedings of the Acoustics, Speech, and Signal Processing,1994. on IEEE International Conference - Volume 04 (1994)

A new method is presented for determining far-field radiation patterns of an array by means of amplitude-only measurements performed on arbitrary surfaces in the array's near field. Based on the method of successive projections, it is a significant generalisation of existing techniques where measurements are restricted to equally spaced points on canonical surfaces. The method has particular application to the airborne measurement of the large low-frequency arrays used in OTHR (over-the-horizon radar) systems, where direct determination of the far field is difficult if not impossible. Two examples illustrate the technique, showing its efficacy for both smooth and gross variations in array excitation.
Parallel Implementation in PC Clusters of a Lanczos-based Algorithm for an Electromagnetic Eigenvalue Problem
Authors: Miguel Oscar Bernabeu, Mariam Taroncher, Victor M. Garcia, Ana Vidal
Venue: Proceedings of the Proceedings of The Fifth International Symposium on Parallel and Distributed Computing (2006)

This paper describes a parallel implementation of a Lanczos-based method to solve generalised eigenvalue problems related to the modal computation of arbitrarily shaped waveguides. This efficient implementation is intended for execution in moderate-low cost workstations (2 to 4 processors). The problem under study has several features: the involved matrices are sparse with a certain structure, and all the eigenvalues needed are contained in a given interval. The novel parallel algorithms proposed show excellent speed-up for small number of processors.
A new positive time-frequency distribution
Authors: J. R. Fonollosa, C. L. Nikias
Venue: Proceedings of the Acoustics, Speech, and Signal Processing,1994. on IEEE International Conference - Volume 04 (1994)

This article studies the formulation of new members of the Cohen-Posch (1985) class of positive time-frequency energy distributions. Members of this class are always positive functionals and satisfy the marginal constraints. Therefore, they can be properly interpreted as distributions. We considered the minimization of cross-entropy measures with respect to different priors or "a priori" distributions and the case of no prior or maximum entropy, and concluded with the necessity to introduce new marginal constraints. New mixed in time and frequency constraints are derived based on a "direction invariance" criterion on the time-frequency plane that are directly related to the Fractional Fourier Transform. The implications of this new constrains in the positive class are analyzed from an information theoretic perspective. We conclude that the new constraints provide enough information to fully determine the resulting distribution and thus, no "a priori" distribution is necessary.
Book Reviews: The Grid from the Ground Up
Authors: Art Sedighi
Venue: IEEE Distributed Systems Online (2006)

A review of Grid Computing: Software Environments and Tools by Jose C. Cunha and Omer F. Rana, eds.
Design of a Compact System Using a MEMS Accelerometer to Measure Body Posture and Ambulation
Authors: Kara E. Bliley, Daniel J. Schwab, David R. Holmes III, Paul H. Kane, James A. Levine, Erik S. Daniel, Barry K. Gilbert
Venue: Proceedings of the 19th IEEE Symposium on Computer-Based Medical Systems (2006)

Interest in studying human posture, movement, and physical activity is growing due in part to the increasing prevalence of obesity. Accelerometers are commonly used in motion analysis systems to enable researchers to conduct studies outside of the traditional laboratory environment; however the available systems tend to be bulky and unsuitable for long-term studies. Therefore, a need exists for a physically robust, yet compact motion analysis system that can be easily worn for an extended time period without disrupting the person's range of motion. Here we describe our on-going efforts to develop a robust, compact system that can measure body posture and movement using a tri-axial accelerometer, and then store this data on a secure digital memory card. This device can be easily configured to collect accelerometer data for specific applications in human motion analysis. In the future, this device will be used to study physical activity in free-living individuals.
A Linguistic Patterns Approach for Requirements Specification
Authors: Carlos Videira, David Ferreira, Alberto Rodrigues da Silva
Venue: Proceedings of the 32nd EUROMICRO Conference on Software Engineering and Advanced Applications (2006)

Despite the efforts made to overcome the problems associated with the development of information systems, we must consider that it is still an immature activity, with negative consequences in time, budget and quality. One of the root causes for this situation is the fact that many projects do not follow a structured, standard and systematic approach, like the methodologies and best practices proposed by Software Engineering. In this paper, we present a requirements specification language, called ProjectITRSL, based on the identification of the most frequently used linguistic patterns in requirements documents, written in natural language. To guarantee the consistency of the written requirements and the integration with generative programming tools, the requirements are analyzed by parsing tools, and immediately validated according with the syntactic and semantic rules of the language.
Silhouette-based human motion estimation for movement education of young children
Authors: Hye-Jeong Kim, Kyoung-Mi Lee
Venue: Proceedings of the 2006 International Conference on Hybrid Information Technology - Volume 02 (2006)

To estimate a human motion, in this paper, we propose a neural approach using silhouettes in video frames captured by two cameras placed at the front and side of the human body. To extract features of the silhouettes for motion estimation, the proposed system computes both global and local features and then groups these features into static and dynamic features depending on whether features are in a static frame. Extracted features are used to train a RBF network. The neural system uses static features as the input of the neural network and dynamic features as additional features for classification. In this paper, the proposed method was applied to movement education for young children. The basic movements for such education consist of locomotor movements, such as walking, jumping, and hopping, and non-locomotor movements, including bending, stretching, balancing and turning. The system demonstrated the effectiveness of motion estimation for movement education generated by the proposed neural network.
A note on growth of superconductivity patents with two new indicators
Authors: Subir K. Sen, Hari Prasad Sharma
Venue: Information Processing and Management: an International Journal (2006)

Patent statistics may be indicative of growth and evolution of technologies in relation to a scientific field or sub-field of research. In this paper annual growth of patents in the field of superconductivity has been studied. The data in five-yearly cumulation have been set against research papers on superconductivity to show comparative growth of basic research and technological development. Two simple indicators have been devised to understand the apparent influence of basic research on technology and trends of relative growth.
Efficient Implementations of Remote Method Invocation Considering Object Consistency
Authors: Seong-Eun Chu, Dae-Wook Kang, Jae-Nam Kim
Venue: Proceedings of the 2006 International Conference on Hybrid Information Technology - Volume 01 (2006)

Java-based distributed applications generally use RMI (Remote Method Invocation) for accessing remote objects. When used in wide-area environment, the performance of such applications can be poor because of the high latency of RMI. This latency can be reduced by caching objects at the client node. However, the use of caching introduces other issues, including the expense of caching the objects as well as the expense of managing the consistency of the object. This paper presents two techniques for managing the consistency of the object caching in Java RMI-based distributed applications. The first technique compares the cached time of the object in the client with the modified time of the object in the server. In the second technique the server broadcasts invalid message to the clients. Using these techniques, the system designer can select the caching and consistency strategy, the most appropriate for the application. The paper illustrates the benefits of using these techniques to improve the performance of RMI applications.
Terminal coalgebras and free iterative theories
Authors: Jiří Adámek, Stefan Milius
Venue: Information and Computation (2006)

Every finitary endofunctor H of Set can be represented via a finitary signature Σ and a collection of equations called "basic". We describe a terminal coalgebra for H as the terminal Σ-coalgebra (of all Σ-trees) modulo the congruence of applying the basic equations potentially infinitely often. As an application we describe a tree iterative theory on H (in the sense of Calvin Elgot) as the theory of all rational Σ-trees modulo the analogous congruence. This yields a number of new examples of iterative theories, e.g., the theory of all strongly extensional, rational, finitely branching trees, free on the finite power-set functor, or the theory of all binary, rational unordered trees, free on one commutative binary operation.
Reviews
Authors: Raul Rojas
Venue: IEEE Annals of the History of Computing (2006)

The Reviews department features book reviews of Sungook Hong's Wireless from Marconi's Black-Box to the Audion and Jeffrey Yost's The Computer Industry.