ppxscal/embedding_network huggingface dataset:
Accounting for non-linear dependence using function driven component analysis
Authors: Lerong Cheng, Puneet Gupta, Lei He
Venue: Proceedings of the 2009 Asia and South Pacific Design Automation Conference (2009)

Majority of practical multivariate statistical analyses and optimizations model interdependence among random variables in terms of the linear correlation among them. Though linear correlation is simple to use and evaluate, in several cases non-linear dependence between random variables may be too strong to ignore. In this paper, We propose polynomial correlation coefficients as simple measure of multi-variable non-linear dependence and show that need for modeling non-linear dependence strongly depends on the end function that is to be evaluated from the random variables. Then, we calculate the errors in estimation which result from assuming independence of components generated by linear de-correlation techniques such as PCA and ICA. The experimental result shows that the error predicted by our method is within 1% error compared to the real simulation. In order to deal with non-linear dependence, we further develop a target function driven component analysis algorithm (FCA) to minimize the error caused by ignoring high order dependence and apply such technique to statistical leakage power analysis and SRAM cell noise margin variation analysis. Experimental results show that the proposed FCA method is more accurate compared to the traditional PCA or ICA.
Enhancing base-code protection in aspect-oriented programs
Authors: Mohamed ElBendary, John Boyland
Venue: Proceedings of the 2009 workshop on Foundations of aspect-oriented languages (2009)

Aspect-oriented programming (AOP) promises to localize concerns that inherently crosscut the primary structural decomposition of a software system. Localization of concerns is critical to parallel development, maintainability, modular reasoning, and program understanding. However, AOP as it stands today causes problems in exactly these areas, defeating its purpose and impeding its adoption. First, the need to open up systems' modules for aspects' interaction competes with the need to protect those modules against possible fault injection by aspects. Second, since aspects are written in terms of base code interfaces, base system components must be stable before aspect components can be developed. This dependency hinders parallel development. This work proposes a language-based solution that allows base code classes to regulate aspect invasiveness, and provides loose coupling of aspects and base code.
The Influence of Situational Factors in Software Product Management: An Empirical Study
Authors: Willem Bekkers, Inge van de Weerd, Sjaak Brinkkemper, Alain Mahieu
Venue: Proceedings of the 2008 Second International Workshop on Software Product Management (2008)

Current research in the field of software product management (SPM) and software process improvement does not take the situational context of a company into account. Taking the context into account, allows small and medium sized companies to improve their SPM processes in a more optimal manner. This research shows that situational factors (SFs) influence the selection process of method fragments for SPM in two applications: SPM process maintenance the influence level of SFs on the SPM processes: if the SF changes value the SPM process may need to be changed; and method fragment choice selecting a method which fits the situational context of the company. This paper presents a list of 27 situational factors in 5 categories, relevant to SPM, with the level of influence they have on the selection of (parts of) methods.
iPower: an energy conservation system for intelligent buildings by wireless sensor networks
Authors: Lun-Wu Yeh, You-Chiun Wang, Yu-Chee Tseng
Venue: International Journal of Sensor Networks (2009)

Wireless Sensor Networks (WSNs) provide a convenient way to monitor the physical environment. Exploiting the context-aware capability of WSN to achieve energy conservation in intelligent buildings is an attractive direction. We thus propose an iPower (intelligent and personalised energy conservation system by WSNs) system which combines WSNs and appliance control devices to provide personalised energy conservation services. A WSN is deployed in each room to monitor the usage of electric appliances and to help determine if there are electric appliances that can be turned off for energy conservation. The iPower system is quite intelligent and can adapt to personal need by automatically adjusting electric appliances to satisfy users' requirements. The design and implementation details of iPower are reported in this paper.
A combined analytical and simulation-based model for performance evaluation of a reconfigurable instruction set processor
Authors: Farhad Mehdipour, Hamid Noori, Bahman Javadi, Hiroaki Honda, Koji Inoue, Kazuaki Murakami
Venue: Proceedings of the 2009 Asia and South Pacific Design Automation Conference (2009)

Performance evaluation is a serious challenge in designing or optimizing reconfigurable instruction set processors. The conventional approaches based on synthesis and simulations are very time consuming and need a considerable design effort. A combined analytical and simulation-based model (CAnSO*) is proposed and validated for performance evaluation of a typical reconfigurable instruction set processor. The proposed model consists of an analytical core that incorporates statistics gathered from cycle-accurate simulation to make a reasonable evaluation and provide a valuable insight. Compared to cycle-accurate simulation results, CAnSO proves almost 2% variation in the speedup measurement.
Figuring configuration: "everyday" users and end-user configuration of pervasive computing environments
Authors: Thom Heslop
Venue: Proceedings of the 21st British HCI Group Annual Conference on HCI 2008: People and Computers XXI: HCI...but not as we know it - Volume 2 (2007)

The research outlined investigates strategies that nonprogramming or "everyday" users may take in interaction with a Pervasive Computing Environment within relevant domains specified by them using a novel probe methodology developed with reference to theories of appropriation of technology and Vygotsky's "Tool and Result" methodology. A hypothesis of configuration policy styles is tested and types of everyday user styles and likely task domains are identified and discussed.
Investigation into GPRS Transmission Employing Switched Beam Antenna at Mobile Station
Authors: P. Sriploy, M. Uthansakul, R. Wongsan
Venue: Proceedings of the 2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies (2008)

In last few years, a smart antenna has been envisaged to enhance the GPRS system implementing at Base Station. This results in the problem of complexity and expense. Alternatively, this paper considers employing switched beam antenna at Mobile Station, such as Laptop, instead. The simulation results reveal that utilizing switched beam antenna provides higher performance in term of C/I and throughput compared with using existing antenna. As being spaced by half-wavelength of the operational frequency, the array size is too large to build in Laptop. On the other hand, the reduction of array spacing affects the system throughput because of mutual coupling effect. Also, the decoupling techniques proposed in literatures are not practical for implementing in Mobile Station. Therefore, this paper also presents the trade off between throughput and array size. From the obtained results, we can reduce the array spacing according to the desired throughput. This is considerably useful for the GPRS designer.
Clusters, language models, and ad hoc information retrieval
Authors: Oren Kurland, Lillian Lee
Venue: ACM Transactions on Information Systems (TOIS) (2009)

The language-modeling approach to information retrieval provides an effective statistical framework for tackling various problems and often achieves impressive empirical performance. However, most previous work on language models for information retrieval focused on document-specific characteristics, and therefore did not take into account the structure of the surrounding corpus, a potentially rich source of additional information. We propose a novel algorithmic framework in which information provided by document-based language models is enhanced by the incorporation of information drawn from clusters of similar documents. Using this framework, we develop a suite of new algorithms. Even the simplest typically outperforms the standard language-modeling approach in terms of mean average precision (MAP) and recall, and our new interpolation algorithm posts statistically significant performance improvements for both metrics over all six corpora tested. An important aspect of our work is the way we model corpus structure. In contrast to most previous work on cluster-based retrieval that partitions the corpus, we demonstrate the effectiveness of a simple strategy based on a nearest-neighbors approach that produces overlapping clusters.
Logic and Bounded-Width Rational Languages of Posets over Countable Scattered Linear Orderings
Authors: Nicolas Bedon
Venue: Proceedings of the 2009 International Symposium on Logical Foundations of Computer Science (2009)

In this paper we consider languages of labelled N-free posets over countable and scattered linear orderings. We prove that a language of such posets is series-rational if and only if it is recognizable by a finite depth-nilpotent algebra if and only if it is bounded-width and monadic second-order definable. This extends previous results on languages of labelled N-free finite and &omega;-posets and on languages of labelled countable and scattered linear orderings. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Embedded Tags and Visual Querying for Face Photo Retrieval
Authors: Chaminda Silva, Toshihiko Yamasaki, Kiyoharu Aizawa
Venue: Proceedings of the 9th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing (2008)

We investigate the utility of automated digital photo retrieval using faceboxes. The sizes and locations of faces in each photo are automatically detected and embedded within the image file. An interactive user interface allows querying for photos visually, in a simple and intuitive manner. We present a user study conducted for evaluating the system on a personal collection of 10,000 digital photos, and report the results. The average search time, including time for sketching and browsing the results, is 31.2 seconds. Usability ratings indicate that the interface is easy to use, and useful as a tool for photo retrieval.
Mapping an Auditory Space onto a Graphical User Interface
Authors: Michael J. Evans
Venue: Proceedings of the IEEE International Conference on Multimedia Computing and Systems - Volume 2 (1999)

A strategy for providing spatialised audio cues in graphical user interfaces is described. With modern GUIs making increasing use of sound, providing spatial auditory information should help relieve information overload, and provide a more natural and effective interface. A continuous spatialisation algorithm is implemented using monitor-side loudspeakers. The space occupied by the visual interface is defined as a cuboid populated by icons, windows and other visual artefacts. It is proposed that we map an exaggerated auditory space onto the visual interface, so that the spatial positions of auditory events are emphasised. A pilot series of perceptual tests verifies that this exaggerated spatial audio strategy can be used, without compromising the cohesion of the combined auditory visual interface. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Independence of Containing Patterns Property and Its Application in Tree Pattern Query Rewriting Using Views
Authors: Junhu Wang, Jeffrey Xu Yu, Chengfei Liu
Venue: World Wide Web (2009)

We show that several classes of tree patterns observe the independence of containing patterns property, that is, if a pattern is contained in the union of several patterns, then it is contained in one of them. We apply this property to two related problems on tree pattern rewriting using views. First, given view V and query Q, is it possible for Q to have an equivalent rewriting using V which is the union of two or more tree patterns, but not an equivalent rewriting which is a single pattern? This problem is of both theoretical and practical importance because, if the answer is no, then, to find an equivalent rewriting of a tree pattern using a view, we should use more efficient methods, such as the polynomial time algorithm of Xu and &Ouml;zsoyoglu (2005), rather than try to find the union of all contained rewritings (which takes exponential time in the worst case) and test its equivalence to Q. Second, given a set S of views, we want to know under what conditions a subset S' of S is redundant in the sense that for any queryQ, the contained rewritings of Q using the views in S' are contained in those using the views in S--S'. Solving this problem can help us to, for example, choose the minimum number of views to be cached, or better design the virtual schema in a mediated data integration system, or avoid repeated calculation in query optimization. For the first problem, we identify several classes of tree patterns for which the equivalent rewriting can be expressed as a single tree pattern. For the second problem, we present necessary and sufficient conditions for S to be redundant with respect to some classes of tree patterns. For both problems we consider extension to cases where there are rewritings using the intersection of multiple views and/or where a schema graph is present.
An ecology of tangible interaction
Authors: Tom Igoe
Venue: Proceedings of the 3rd International Conference on Tangible and Embedded Interaction (2009)

Tangible and embedded interaction is a fancy way of saying that we make things. We make tools that people handle, use and abuse. We make displays and devices that fill space draw attention, and (sometimes) deliver information. At the center of all of our work is the practice of making things. Despite that fact, many tangible and embedded interaction practitioners aren't trained in a tradition of making things. Much of the research in this field grows out of computer and information sciences, human-computer interaction, and other fields with less tangible practices. If anything, tangible interaction grew out of a perceived lack of physicality in computing. In order to get things made, we've drawn on a number of practices with a deeper knowledge of manufacturing and fabrication: art, performance, industrial design, and the garment industry, to name a few. This is a fairly young field, and much of the work still consists of experiments, individual art works, and bespoke items designed for exhibits, special events, or research projects. For the most part, we haven't given much thought to what tangible interaction means at an industrial scale, even though we all have fantasies of a world filled with intelligent, computation-enabled things. What we haven't yet considered is what happens to all of those intelligent, computation-enabled things when they've outlived their utility. Part of the reason we haven't considered it much is because and because the practices of fabrication from which we've borrowed haven't given it a lot of thought either. Manufacturing has traditionally been a one-way street. In "Shaping Things", Bruce Sterling put forth the idea that we could think of disposal and reuse of goods as an information design problem. Drawing on the work of entrepreneurs like Ray Anderson, many interaction design programs have begin teaching service design, thinking about the things we make not as goods to be bought, but as services to be leased. I'd like to propose that we also think about the end of our things' lives as a tangible interaction design problem. In this talk, I'll look at some assumptions about how we make interactive things individually and at scale, and propose a few places we might begin making changes. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Urban pixels: painting the city with light
Authors: Susanne Seitinger, Daniel S. Perry, William J. Mitchell
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

Urban environments are increasingly filled with digital display systems that are inflexible, flat, bounded, high-resolution, and unresponsive. In this paper, we explore the potential of physically instantiated pixels that enable flexible, reconfigurable, unbounded, low-resolution, and responsive urban displays. Urban Pixels are nodes in a wireless network of physical pixels for urban spaces. Each pixel unit includes a microcontroller, RF transceiver (433 MHz), LED module (ten bright, white LEDs), rechargeable Li-Ion battery pack, IR sensor and renewable energy source such as photo-voltaic cells. Two acrylic half-spheres (4-inch diameter) protect the components from the elements. No additional wiring is needed for communication and the units can be mounted individually to any surface. A small-scale prototype network of fifty Urban Pixels was displayed on a façade of Eden Court Theater in Inverness, Scotland from June 1 - June 7, 2008. The public was encouraged to change display patterns via SMS or to interact with individual units via flashlights. We observed and informally interviewed theater guests and passers-by interacting with the façade for several nights. Based on these results, we outline an exciting problem space for designing displays and lighting systems in cities.
A Qualitative and Quantitative Characterisation of Style in Sign Language Gestures
Authors: Alexis Heloir, Sylvie Gibet
Venue: Gesture-Based Human-Computer Interaction and Simulation: 7th International Gesture Workshop, GW 2007, Lisbon, Portugal, May 23-25, 2007, Revised Selected Papers (2009)

This paper addresses the identification and representation of the variations induced by style for the synthesis of realistic and convincing expressive sign language gesture sequences. A qualitative and quantitative comparison of styled gesture sequences is made. This comparison leads to the identification of temporal, spatial, and stuctural processes that are described in a theoritical model of sign language phonology. Insights raised by this study are then considered in the more general framework of gesture synthesis in order to enhance existing gesture specification systems.
A 0.5 V bulk-input OTA with improved common-mode feedback for low-frequency filtering applications
Authors: Michael Trakimas, Sameer Sonkusale
Venue: Analog Integrated Circuits and Signal Processing (2009)

This paper presents the design of a two-stage pseudo-differential operational transconductance amplifier (OTA) and its application in low-frequency continuous time filters. The OTA was designed in a 0.18 μm, 0.45 V V T CMOS process. An improved bulk-mode common-mode feedback (CMFB) circuit has been designed which does not load the OTA compared to prior art. A self cascode load structure and partial positive feedback provide higher gain. The bulk terminals of all transistors have been biased to lower their threshold voltages (VT) and maximize signal swing. The OTA operates at a supply voltage of 0.5 V and consumes only 28 μW of power. Rail-to-rail input is made possible by using the transistor's bulk terminal as the input. For a load of 20 pF the OTA has a measured DC gain of 63 dB and a gain-bandwidth product of 570 kHz. To demonstrate the use of the OTA in practical circuits, three active RC filters were designed: a 10 kHz Butterworth filter, a 10 kHz Bessel filter, and a 2.5 kHz Tschebycheff filter.
Dividing Agents on the Grid for Large Scale Simulation
Authors: Dac Phuong Ho, The Duy Bui, Nguyen Luong Do
Venue: Proceedings of the 11th Pacific Rim International Conference on Multi-Agents: Intelligent Agents and Multi-Agent Systems (2008)

Multi-agent based simulation is an important methodology that uses models incorporating agents to evaluate research conclusions. When the simulation involves a large number of agent, however, it requires extensively high computational power. In that case, all agents in the simulation model should be distributed in a way so that agents can be run in parallel on multiple computational nodes to gain the required performance speed up. In this paper, we present a framework for large scale multi-agent based simulation on grid. We have modified the desktop grid platform BOINC for multi-agent based simulation. Assuming that the agents interact locally with the environment, we proposed an approach to divide the agents for grid nodes so that we can keep load balancing for the distributed simulation while optimizing the communication between grid nodes and the grid server. We have implemented the food foraging simulation to evaluate the feasibility of the framework.
The role of computer assisted instruction (CAI) in management information systems
Authors: Raymond J. Collins
Venue: Proceedings of the May 6-10, 1974, national computer conference and exposition (1974)

In recent months there has been much discussion of the "Fourth Generation" in computer technology. Defined as a total system, not a new series of computer hardware, the Fourth Generation has the following characteristics: &bull; An interactive communications system &bull; A data base system &bull; A transaction processing system The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Research and Development of a CMMI-Compliant Requirement Management System for Software Engineering
Authors: Justin J. Lin, Yung-Sung Lin
Venue: Computer Supported Cooperative Work in Design IV: 11th International Conference, CSCWD 2007, Melbourne, Australia, April 26-28, 2007. Revised Selected Papers (2008)

By defining requirement management rules in the early project phase, the developed product can usually be assured to satisfy customer requirements and increase customer satisfaction. The capability maturity model integration (CMMI) requirement management process area is proved to be the best-practice model for requirement management. However, many investigators have claimed that the introduction of the process area creates two challenges for software engineering: (1) it is difficult to trace and measure requirements, and (2) it requires preparation and management of a large amount of inevitable documentation jobs. This research implements a shark-tooth software development model and scenario analysis of aspectual use case to develop a collaborative requirement management system which complies with CMMI. A case study is used to investigate the practical benefits of the system. Application results have helped the company improve the software development environment in many aspects including easier requirement management, more effective development cycle, and better resource integration.