ppxscal/embedding_network huggingface dataset:
On the Use of Mutual Information to Compare the Performance of Wireless Sensor Networks in Detection Applications
Authors: Benedito J. B. Fonseca Jr., John A. Gubner
Venue: Proceedings of the 7th international conference on Information processing in sensor networks (2008)

The problem of choosing among candidate wireless sensor networks (WSNs) that send data to a fusion center to detect a binary phenomenon in nature is considered. Viewing the system as a communication channel in which nature is the transmitter and the fusion center is the receiver, it is intuitive to prefer the system that provides the highest mutual information between the phenomenon and the received signal at the fusion center. This paper reviews existing literature on this criterion and provides complementary results showing that, under a Bayesian framework, a WSN that provides equal or higher mutual information than other WSNs results in equal or better detection performance only in very restrictive settings. This paper also presents a bound on the detection performance of a WSN having the highest mutual information, and it is shown that the bound becomes tight as the mutual information approaches its maximum. Similar conclusions are obtained in the Neyman-Pearson framework.
Real-Time Computerized Annotation of Pictures
Authors: Jia Li, James Z. Wang
Venue: IEEE Transactions on Pattern Analysis and Machine Intelligence (2008)

Developing effective methods for automated annotation of digital pictures continues to challenge computer scientists. The capability of annotating pictures by computers can lead to breakthroughs in a wide range of applications, including Web image search, online picture-sharing communities, and scientific experiments. In this work, the authors developed new optimization and estimation techniques to address two fundamental problems in machine learning. These new techniques serve as the basis for the Automatic Linguistic Indexing of Pictures - Real Time (ALIPR) system of fully automatic and high speed annotation for online pictures. In particular, the D2-clustering method, in the same spirit as k-means for vectors, is developed to group objects represented by bags of weighted vectors. Moreover, a generalized mixture modeling technique (kernel smoothing as a special case) for non-vector data is developed using the novel concept of Hypothetical Local Mapping (HLM). ALIPR has been tested by thousands of pictures from an Internet photo-sharing site, unrelated to the source of those pictures used in the training process. Its performance has also been studied at an online demo site where arbitrary users provide pictures of their choices and indicate the correctness of each annotation word. The experimental results show that a single computer processor can suggest annotation terms in real-time and with good accuracy.
State estimation for linear impulsive control systems
Authors: Tatiana F. Filippova, Oksana G. Vzdornova
Venue: Proceedings of the 9th WSEAS International Conference on Systems (2005)

The paper deals with the state estimation problem for impulsive control system described by linear differential equations containing impulsive terms (or measures). Models of this kind arise in applied areas ranging from space navigation to investment problems as well as ecological management. The aim of the paper is to find the external set-valued estimates of the reachable sets of impulsive control systems with special ellipsoidal constrains on the admissible values of control functions and on the initial state vectors. Basing on the techniques of so-called ellipsoidal calculus we give a new state estimation approach that uses the impulsive structure of the control problem and is based on external ellipsoidal approximation of a convex union of ellipsoids. The examples of construction of such external state estimates for linear impulsive control systems are given.
Static analysis of active XML systems
Authors: Serge Abiteboul, Luc Segoufin, Victor Vianu
Venue: Proceedings of the twenty-seventh ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems (2008)

Active XML is a high-level specification language tailored to data-intensive, distributed, dynamic Web services. Active XML is based on XML documents with embedded function calls. The state of a document evolves depending on the result of internal function calls (local computations) or external ones (interactions with users or other services). Function calls return documents that may be active, so may activate new subtasks. The focus of the paper is on the verification of temporal properties of runs of Active XML systems, specified in a tree-pattern based temporal logic, Tree-LTL, that allows expressing a rich class of semantic properties of the application. The main results establish the boundary of decidability and the complexity of automatic verification of Tree-LTL properties.
A 242mW, 10mm21080p H.264/AVC high profile encoder chip
Authors: Yu-Kun Lin, De-Wei Li, Chia-Chun Lin, Tzu-Yun Kuo, Sian-Jin Wu, Wei-Cheng Tai, Wei-Cheng Chang, Tian-Sheuan Chang
Venue: Proceedings of the 45th annual Design Automation Conference (2008)

A 1080p high profile H.264 encoder is designed by the robust reusable silicon IP methodology and fabricated in a 0.13&mu;m CMOS technology with an area of 10 mm2 and 242mW at 145MHz. Compared to the state-of-the-art design targeted at 720p baseline, this design reduces 53.4% power and 46.7% area through parallelism enhanced throughput and cross stage sharing pipeline.
Physical mobile interaction with dynamic physical object
Authors: Johannes Vetter, John Hamard, Massimo Paolucci, Enrico Rukzio, Albrecht Schmidt
Venue: Proceedings of the 9th international conference on Human computer interaction with mobile devices and services (2007)

The proposed demonstration offers the possibility to access and interact with (web) services through Physical Mobile Interaction (PMI) with tag-based dynamic physical objects such as papers. Our demonstration supports several direct manipulation gestures in the real world and deals with physical objects able to provide system feedback to the user during the course of the interaction.
BlockLib: a skeleton library for cell broadband engine
Authors: Markus Ålind, Mattias V. Eriksson, Christoph W. Kessler
Venue: Proceedings of the 1st international workshop on Multicore software engineering (2008)

Cell Broadband Engine is a heterogeneous multicore processor for high-performance computing and gaming. Its architecture allows for an impressive peak performance but, at the same time, makes it very hard to write efficient code. The need to simultaneously exploit SIMD instructions, coordinate parallel execution of the slave processors, overlap DMA memory traffic with computation, keep data properly aligned in memory, and explicitly manage the very small on-chip memory buffers of the slave processors, leads to very complex code. In this work, we adopt the skeleton programming approach to abstract from much of the complexity of Cell programming while maintaining high performance. The abstraction is achieved through a library of parallel generic building blocks, called BlockLib. Macro-based generative programming is used to reduce the overhead of genericity in skeleton functions and control code size expansion. We demonstrate the library usage with a parallel ODE solver application. Our experimental results show that BlockLib code achieves performance close to hand-written code and even outperforms the native IBM BLAS library in cases where several slave processors are used.
Pandemic simulation of antivirals + school closures: buying time until strain-specific vaccine is available
Authors: S. M. Mniszewski, S. Y. Del Valle, P. D. Stroud, J. M. Riese, S. J. Sydoriak
Venue: Computational Mathematical Organization Theory (2008)

A strain-specific vaccine is unlikely to be available in the early phases of a potential H5N1 avian influenza pandemic. It could be months and at the current production rate may not provide timely protection to the population. Intervention strategies that control the spread of infection will be necessary in this situation, such as the use of the US stockpile of antiviral medication coupled with a 6-month school closure. The agent-based simulation model, EpiSimS, was used to assess the impact of this intervention strategy followed by three different vaccine approaches: (1) 2-dose, 80% effective, (2) 1-dose, 30% effective, and (3) 1 dose, 80% effective. Simulations show that the combination of antivirals, school closures, and a strain-specific vaccine can reduce morbidity and mortality while in effect. A significant second infection wave can occur with current vaccine technology once school closures are relaxed, though an ideal vaccine is able to contain it. In our simulations, worker absenteeism increases in all cases mostly attributed to household adults staying home with children due to the school closures.
Minimization of tree pattern queries with constraints
Authors: Ding Chen, Chee-Yong Chan
Venue: Proceedings of the 2008 ACM SIGMOD international conference on Management of data (2008)

Tree pattern queries (TPQs) provide a natural and easy formalism to query tree-structured XML data, and the efficient processing of such queries has attracted a lot of attention. Since the size of a TPQ is a key determinant of its evaluation cost, recent research has focused on the problem of query minimization using integrity constraints to eliminate redundant query nodes; specifically, TPQ minimization has been studied for the class of forward and subtype constraints (FT-constraints). In this paper, we explore the TPQ minimization problem further for a richer class of FBST-constraints that includes not only FT-constraints but also backward and sibling constraints. By exploiting the properties of minimal queries under FBST-constraints, we propose efficient algorithms to both compute a single minimal query as well as enumerate all minimal queries. In addition, we also develop more efficient minimization algorithms for the previously studied class of FT-constraints. Our experimental study demonstrates the effectiveness and efficiency of query minimization using FBST-constraints.
Search survey for S/V Tenacious: Gulf of Farallones and approaches to San Francisco Bay
Authors: Ed Saade
Venue: ACM SIGMOD Record (2008)

On January 28th, 2007, Jim Gray sailed his 40 foot sailboat, Tenacious, on a day cruise to the Farallon Islands off San Francisco and was reported overdue when he didn't return as scheduled. The immediate and comprehensive above water search for Jim and Tenacious was suspended on February 16, 2007. Shortly after this, Fugro Pelagos, Inc., conducted an extensive search of the seabed to look for evidence of the whereabouts of the sailing vessel, Tenacious. Approximately 1000km2 was surveyed between February, 2007 and May 31st, 2007 when the effort was suspended. This paper summarizes the search survey for S/V Tenacious, the areas and techniques used in the survey, the findings of the survey, and the results and recommendations provided by Fugro Pelagos, Inc.
Determination of particle distributions in microfluidic systems under the influence of electric fields
Authors: Andreas Heeren, Monika Fleischer, Dieter Kern
Venue: Microelectronic Engineering (2008)

One of the challenges in biological applications of nanotechnology is the manipulation of micro and nanoparticles in microfluidic systems. In one approach, the short-range forces exerted on particles by electric fields, e.g. via dielectrophoresis, can be utilized for this purpose. By a combination of dielectrophoresis and electroosmosis it is possible to act on particles in larger volumes. In this work a new method for examining particle distributions in microfluidic devices is presented together with results of experiments in which the method was used to investigate the combination of dielectrophoresis and electroosmosis.
Patterns of ERP Adoption and Implementation in China and Some Implications
Authors: David H. Brown, Susan He
Venue: Electronic Markets (2007)

Against a background of rapid change, this paper looks at recent experiences of adopting and implementing ERP. Of particular interest is the growing presence of domestic suppliers and, in this context, the implementation experiences of firms using domestic systems as well as the established international systems such as SAP. The research uses a combination of 20 mini-cases and a single in-depth case study and interprets these through a critical success factor perspective. The outcome confirms previous literature but contributes further by establishing the changing dynamic between international and domestic suppliers, the particular importance of training and employee retention, and the role of context in determining implementation factors.
GPE4CGSP: interoperability between heterogeneous grid infrastructures
Authors: Song Wu, Kang Xiao, Li Qi
Venue: Proceedings of the 2007 Asian technology information program's (ATIP's) 3rd workshop on High performance computing in China: solution approaches to impediments for high performance computing (2007)

In this paper we present GPE4CGSP, which targets the interoperability between GPE (Grid Programming Environment) and CGSP (ChinaGrid Support Platform). The web services technique and gridftp data transfer protocol are used to implement the interoperation between GPE and CGSP. Grid application can be deployed to CGSP through GPE. Without modification, GPE client can freely visit and use the resources in CGSP. Typically, end users can submit jobs to CGSP through GPE application client. GPE4CGSP provides one feasible way for the interoperability of heterogeneous grid infrastructures. The evaluation proves that the job execution time of GPE4CGSP is less than that of GPE4GTK.
ICT in emerging energy markets
Authors: Terje Gjengedal
Venue: Proceedings of the 5th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (2006)

Statkraft is presently implementing a new control centre system that will replace the five existing control centre solutions by one new multi site solution. The existing control centres are characterized by five independent and different systems, they have different functionality, and communication is carried out by serial solutions based on proprietary protocols. The new control centre solution will be one integrated system with common t tools and functionality. It will be a flexible system that allows redesigning the control centre structure and dispatch of the operation tasks when needed. The new control system is presently under installation, and the full functionality should be in place by the end of 2006. The new system will give a much better flexibility in defining, dispatching and organizing the process control and the power plant and hydro system operations than the present system. It is of a great benefit that all users now will use the same type of functionality, and that they have access to the same type and quality audited information. The operators will be more integrated into the same working processes, and exchange of information, experiences and view points in between regions will be far easier than before. Since all operators are using the same system, it will also be easier to maintain, develop and exchange the competence between the regions. Hence, an even more professional and efficient process control may be achieved.
3-D topologies for networks-on-chip
Authors: Vasilis F. Pavlidis, Eby G. Friedman
Venue: IEEE Transactions on Very Large Scale Integration (VLSI) Systems (2007)

Several interesting topologies emerge by incorporating the third dimension in networks-on-chip (NoC). The speed and power consumption of 3-D NoC are compared to that of 2-D NoC. Physical constraints, such as the maximum number of planes that can be vertically stacked and the asymmetry between the horizontal and vertical communication channels of the network, are included in speed and power consumption models of these novel 3-D structures. An analytic model for the zero-load latency of each network that considers the effects of the topology on the performance of a 3-D NoC is developed. Tradeoffs between the number of nodes utilized in the third dimension, which reduces the average number of hops traversed by a packet, and the number of physical planes used to integrate the functional blocks of the network, which decreases the length of the communication channel, is evaluated for both the latency and power consumption of a network. A performance improvement of 40% and 36% and a decrease of 62% and 58% in power consumption is demonstrated for 3-D NoC as compared to a traditional 2-D NoC topology for a network size of N = 128 and N = 256 nodes, respectively.
Power-aware dynamic placement of HPC applications
Authors: Akshat Verma, Puneet Ahuja, Anindya Neogi
Venue: Proceedings of the 22nd annual international conference on Supercomputing (2008)

High Performance Computing applications and platforms have been typically designed without regard to power consumption. With increased awareness of energy cost, power management is now an issue even for compute-intensive server clusters. In this work, we investigate the use of power management techniques for high performance applications on modern power-efficient servers with virtualization support. We consider power management techniques such as dynamic consolidation and usage of dynamic power range enabled by low power states on servers. We identify application performance isolation and virtualization overhead with multiple virtual machines as the key bottlenecks for server consolidation. We perform a comprehensive experimental study to identify the scenarios where applications are isolated from each other. We also establish that the power consumed by HPC applications may be application dependent, non-linear and have a large dynamic range. We show that for HPC applications, working set size is a key parameter to take care of while placing applications on virtualized servers. We use the insights obtained from our experimental study to present a framework and methodology for power-aware application placement for HPC applications.
Towards a framework for mining and analysing spatio-temporal datasets
Authors: M. Bertolotto, S. Di Martino, F. Ferrucci, T. Kechadi
Venue: International Journal of Geographical Information Science (2007)

High-resolution spatio-temporal datasets are being collected every day to record the behaviour of several natural phenomena. However, data-mining techniques are needed to extract relevant patterns from very large repositories and reveal spatial and temporal patterns in the behaviour of these phenomena. To this aim, we propose a system for mining data with spatial and temporal characteristics, and for visualizing and interpreting the results. Within this system, we have developed two complementary 3D visualization environments, one based on Google Earth and one relying on a Java3D graphical user interface. In this paper, we illustrate the main features of the system we have developed, and report on the main results we have obtained by analysing the Hurricane Isabel dataset.
Performance Analysis of Cache and Scratchpad Memory in an Embedded High Performance Processor
Authors: Wanessa Pereira Dias, Emilia Colonese
Venue: Proceedings of the Fifth International Conference on Information Technology: New Generations (2008)

The objective of this article is to present a comparative study of an embedded processor performance using architecture with cache or scratchpad memory in relation to an architecture with only external Synchronous Dynamic Random Access Memory. For this analysis the ADSP-BF533 of Analog Devices, a high performance processor, was used. The adjusted memory space was configured and analyzed during the process of a small data volume, and great data volume, in three different speeds of the core, and in one same speed of the processor external memory. The scratchpad memory has shown better performance in programs with small data volume; however the cache memory had a better performance for large data allocation.
Cooperation among peers in an ad hoc network to support an energy efficient IM service
Authors: Danyu Zhu, Matt Mutka
Venue: Pervasive and Mobile Computing (2008)

Continuous wireless wide area network (WWAN) access for mobile devices in future pervasive systems may be limited by battery power and may generate extensive data telecommunication costs. In this paper, we develop a new message notification protocol (MNP) to enable mobile users to maintain a continuous presence at their instant messaging (IM) server while avoiding long, idle connections. In MNP, mobile users cooperatively share a single message notification channel to reduce users' telecommunication charges and extend a device's battery life. A device may turn off its WWAN interface for most of the time to save power, and only needs to contact the IM server when needed. Precise group information does not need to be maintained by a mobile device. Message notification exchanged between the IM server and the peer group is represented by a compressed Bloom filter to further reduce the protocol overhead and provide additional privacy and security. The results of performance evaluation show that the MNP protocol could be able to save significant energy consumed in a mobile device.
Mobio threat: A mobile game based on the integration of wireless technologies
Authors: Wilian Segatto, Eduardo Herzer, Cristiano L. Mazzotti, João R. Bittencourt, Jorge Barbosa
Venue: Computers in Entertainment (CIE) (2008)

Pervasive gaming is a new genre that became possible due to the development of communication technologies, especially wireless ones. In this area of gaming, players must physically walk to certain places of the game area to reach their objectives and missions. They may also interact with the environment and with real objects. Nowadays, there are just a few pervasive games developed, and all of them have limitations concerning localization tracking, hardware flexibility, signal coverage, and cheap setup. In this context, an innovative game, called moBIO Threat // Disease Control, was developed on the basis of the integration of multiple wireless technologies, mixing their capabilities and neutralizing their limitations. It utilizes RFID, IrDA, and QR Code technologies for object interaction, Bluetooth for exchanging information between players who are physically close and the IEEE 802.11 Wi-Fi protocol to connect all of the players with the game server. From what we observed, moBIO Threat provides a completely different game experience, with social gaming and collaboration being strong attributes of the game. This article describes the development of the game and other details about the project and about pervasive gaming.
Efficient feature correspondence for image registration
Authors: Muhammad Saleem, Adil Masood Siddiqui, Imran Touqir
Venue: Proceedings of the 6th WSEAS International Conference on Signal, Speech and Image Processing (2006)

Feature correspondence is an important step in image registration. Chamfer matching is a process of establishing the feature correspondence of an object (subimage) in an image where both the subimage and the image are binary. Chamfer matching establishes correspondence based on low level features. It is the process of locating the template within the image by shifting the template within the image and at each shift position determining the sum of distances of closest object points in the template and the image. The smaller the sum, the closer object points in the template and the image. Correspondence is achieved by calculating the minimum distance out of all the translations which is computationally expensive. The problem is further aggravated if reference image is of much greater dimensions as compared to template image. Since the reference image consists of objects and background, calculating the minimum distance for all the pixel locations becomes time consuming. In this paper a method to decrease the computation time of existing technique is presented, to make existing schemes suitable for real time registration.