ppxscal/embedding_network huggingface dataset:
Voice Conversion Using Canonical Correlation Analysis Based on Gaussian Mixture Model
Authors: ZhiHua Jian, Zhen Yang
Venue: Proceedings of the Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing - Volume 01 (2007)

A novel algorithm for voice conversion is proposed in this paper. The mapping function of spectral vectors of the source and target speakers is calculated by the canonical correlation analysis (CCA) estimation based on Gaussian mixture models. Since the spectral envelope feature remains a majority of second order statistical information contained in speech after linear prediction (LPC) analysis, the CCA method is more suitable for spectral conversion than MMSE because CCA explicitly considers the variance of each component of the spectral vectors during conversion procedure. Both subjective and objective evaluations are conducted. The experimental results demonstrate that the proposed scheme can achieve better performance than the previous method which uses MMSE estimation criterion.
Modeling Deliberative Agents Using Object Oriented Petri Nets
Authors: Roder Koci, Zdenek Mazal, Frantisek Zboril, Vladimir Janousek
Venue: Proceedings of the Seventh International Conference on Intelligent Systems Design and Applications (2007)

Multi-agent systems are one of the prospect approaches to simplification of complex system development. They in- troduce a natural abstraction layer on top of autonomous actors. Since multi-agent systems are strongly parallel the appropriate paradigms or tools have to be used. This arti- cle will demonstrate the application of our developed kind of high-level Petri nets to the deliberative agent model- ing and simulation. This formalism is called Object Ori- ented Petri Nets (OOPN). It introduces a powerful means for description of concurrency and a high level of system dynamism. Moreover, OOPNs are a part of a framework intended for simulation based design featuring model con- tinuity. It means that a model developed incrementally in a simulated environment can become a part of target appli- cations.
Exploiting Temporal Statistics for Events Analysis and Understanding
Authors: Christian Micheloni, Lauro Snidaro, Claudio Piciarelli, Gian Luca Foresti
Venue: Proceedings of the 14th International Conference on Image Analysis and Processing (2007)

In this paper, we propose a technique for detecting possible anomalous events in an area monitored by a video surveillance system. In particular, here we focus on the time spent by an object to carry out simple events. Mixtures of Gaussians are maintained for each event to have a statistical representation of the times commonly required to perform certain activities. Such statistics are then exploited both for the analysis of the simple activities and for discovering anomalous situations (i.e. complex events). In these cases the system requires the attention of the human operator. Experiments have been performed on a multi-camera system for parking lot security.
A Comparative Study of Aspect-Oriented Requirements Engineering Approaches
Authors: Americo Sampaio, Phil Greenwood, Alessandro F. Garcia, Awais Rashid
Venue: Proceedings of the First International Symposium on Empirical Software Engineering and Measurement (2007)

Aspect-Oriented Requirements Engineering (AORE) aims at improving separation of concerns in the problem space by offering new ways of modularising requirements. Over recent years several AORE approaches have emerged by evolving contemporary requirements approaches such as viewpoints-, scenarios- and goal-based models. Due to the novelty of these techniques, there is a lack of systematic comparative studies analyzing the benefits and drawbacks they can offer to the requirements engineering practice. This paper presents a case study contrasting four eminent AORE approaches in terms of time effectiveness and accuracy of their produced outcome. We address challenges related to the heterogeneous definitions for AORE model concepts as well as the fact that they perform similar general requirements process activities in different ways. In order to address these challenges, we provide a mapping of the AORE approaches onto general RE activities and provide a common naming scheme. The case study results show that specification of aspect compositions in AORE presents an effort bottleneck that has to be carefully weighed against the added benefits of modularity and analysis of systemic properties offered by AORE. Consequently, our study provides an initial yet significant stepping stone towards improving the evaluation of AORE approaches and understanding their contribution to requirements engineering.
Floating point sub-language of a string language
Authors: Claude A. R. Kagan
Venue: ACM SIGAPL APL Quote Quad (1971)

The facilities for floating point computation within the framework of a string language currently operating on the PDP-10 at the Western Electric Company Engineering Research Center are considered to be a sublanguage. This sublanguage is accessed through use of the * (asterisk) as a function marker in lieu of the colon, and such use causes execution of all of the available arithmetic functions as well as a family of additional functions whose names are the same as those used in Fortran. The list of functions that will execute in this sublanguage is displayed through execution of ** (LF), expression.
Evidence for attentional gradient in the serial position memory curve from event-related potentials
Authors: Allen Azizian, John Polich
Venue: Journal of Cognitive Neuroscience (2007)

The occurrence of primacy versus recency effects in free recall is suggested to reflect either two distinct memory systems, or the operation of a single system that is modulated by allocation of attention and less vulnerable to interference. Behavioral and event-related brain potential (ERPs) measures were used to investigate the encoding substrates of the serial position curve and subsequent recall in young adults. Participants were instructed to remember lists of words consisting of 12 common nouns each presented once every 1.5 sec, with a recall signal following the last word to indicate that all remembered items should be written on paper. This procedure was repeated for 20 different word lists. Both performance and late ERP amplitudes reflected classic recall serial position effects. Greater recall and larger late positive component amplitudes were obtained for the primacy and recency items, with less recall and smaller amplitudes for the middle words. The late positive component was larger for recalled compared to unrecalled primacy items, but it did not differ between memory performance outcomes for the recency items. The close relationship between the enhanced amplitude and primacy retrieval supports the view that this positive component reflects one of a process series related to attentional gradient and encoding of events for storage in memory. Recency effects appear to index operations determined by the anticipation of the last stimulus presentation, which occurred for both recalled and unrecalled memory items. Theoretical implications are discussed.
Data Quality - The Key Success Factor for Data Driven Engineering
Authors: Shazia Sadiq, Xiaofang Zhou, Maria Orlowska
Venue: Proceedings of the 2007 IFIP International Conference on Network and Parallel Computing Workshops (2007)

As the scale and diversity of data grows in the digital arena, the complexities of data driven engineering grow multifold with it. The last several years have brought forth several new technologies to service this need - semantic web, grid systems, web service composition to mention a few. However, a fundamental underpinning of the success of these technologies resides in the quality of data that they can provide. Often the failure of a technology is attributed to its functionality when the real problem lies in the quality of data it uses and subsequently produces. In this paper, we highlight a need to embrace data quality considerations in all aspects of data driven engineering.
A cost model to estimate the effort of data mining projects (DMCoMo)
Authors: Oscar Marbán, Ernestina Menasalvas, Covadonga Fernández-Baizán
Venue: Information Systems (2008)

CRISP-DM is the standard to develop Data Miningprojects. CRISP-DM proposes processes and tasks that you have to carry out to develop a Data Miningproject. A task proposed by CRISP-DM is the cost estimation of the Data Miningproject. In software development a lot of methods are described to estimate the costs of project development (SLIM, SEER-SEM, PRICE-S and COCOMO). These methods are not appropriate in the case of Data Miningprojects because in Data Miningsoftware development is not the first goal. Some methods have been proposed to estimate some phases of a Data Miningproject, but there is no method to estimate the global cost of a generic Data Miningproject. The lack of Data Miningproject estimation methods is because of many real-life project failures due to the non-realistic estimation at the beginning of the projects. Consequently, in this paper we propose to design and validate a parametric cost estimation model, similar to COCOMO or SLIM in software development, for Data Miningprojects (DMCoMo). The drivers of the model will be proposed first and later the equation of the model will be proposed.
Efficient processing of expressive node-selecting queries on XML data in secondary storage: a tree automata-based approach
Authors: Christoph Koch
Venue: Proceedings of the 29th international conference on Very large data bases - Volume 29 (2003)

We propose a new, highly scalable and efficient technique for evaluating node-selecting queries on XML trees which is based on recent advances in the theory of tree automata. Our query processing techniques require only two linear passes over the XML data on disk, and their main memory requirements are in principle independent of the size of the data. The overall running time is O(m + n), where monly depends on the query and n is the size of the data. The query language supported is very expressive and captures exactly all node-selecting queries answerable with only a bounded amount of memory (thus, all queries that can be answered by any form of finite-state system on XML trees). Visiting each tree node only twice is optimal, and current automata-based approaches to answering path queries on XML streams, which work using one linear scan of the stream, are considerably less expressive. These technical results - which give rise to expressive query engines that deal more efficiently with large amounts of data in secondary storage - are complemented with an experimental evaluation of our work.
Extending the Scope of Relational Languages
Authors: H. F. Korth
Venue: IEEE Software (1986)

The relational model can serve as the foundation for an extended language that incorporates features of several languages, including functional and object-oriented languages, and allows alternative forms of expression.
Symbol Recognition Using a 2-class Hierarchical Model of Choquet Integrals
Authors: L. Wendling, J. Rendek
Venue: Proceedings of the Ninth International Conference on Document Analysis and Recognition - Volume 02 (2007)

We present an approach allowing to automatically ex- tract a suitable set of soft output classifiers and to aggre- gate them to provide a global decision using the Choquet integral. This approach relies on two key points. A learning algorithm based on a 2-class model is performed to define a new set of decisions rules assuming to be experts dedicated to recognize one class from another one. All the associated capacities are aggregated again at a high level to recog- nize symbols. The second is a selection scheme that dis- cards weak or redundant decision rules, keeping only the most relevant subset. An experimental study, based on real world data, is then described. It analyzes the improvements achieve by these points first when used independently, then when combined together.
New Products
Authors: Maria Ebling, Eyal de Lara
Venue: IEEE Pervasive Computing (2007)

In this issue, editors Eyal de Lara and Maria Ebling cover a mobile firewall with a USB form factor, a smart parking meter that can detect when a vehicle pulls in and out of a parking stall, and an initiative by the British government to outfit police officers with head-mounted cameras. They also present a Web-based voice communications service that lets users manage all their phones with a single virtual phone number and a service that turns the isolation of surfing the Web into a social networking opportunity.
Queueing analysis of a server node in transaction processing middleware systems
Authors: Wei Xiong, Tayfur Altiok
Venue: Computers and Operations Research (2008)

Quantitative performance modeling of complex information systems is of immense importance for designing enterprise e-business infrastructures and applications. In this paper, we present a traffic model of a server node in a typical transaction processing middleware system as well as a quantitative framework to model and analyze its performance. A multi-class open queueing network model is presented in which multi-class jobs are admitted to a number of server processes sharing hardware resources including the CPU and the disk. We have developed a viable approximation method, which decomposes the dependent components into their independent counterparts while preserving their relevant characteristics. We have conducted queueing-theoretic delay analyses and verified the approach using simulation. Results demonstrate the strength of our approach in predicting delays, elapsed times and other system performance measures.
Implementation and Experimental Evaluation of On-Line Simulation Server for OSPF-TE
Authors: Hitomi Tamura, Tsuyoshi Okubo, Yousuke Inoue, Kenji Kawahara, Yuji Oie
Venue: Proceedings of the 7th International Conference on Hybrid Intelligent Systems (2007)

As the amount of traffic transfered on the Internet are increasing, dynamic Traffic Engineering (TE) becomes important to avoid link congestion. In Open Shortest Path Fast(OSPF)-based networks, link costs are statically set according to its long-term utilization for reducing traffic on some congested nodes, hence temporary performance degradation may occur due to short-term traffic fluctuation. For dynamic TE on OSPF-based networks, measurement of the utilization of links / nodes, inferring the set of link costs for improving transmission behavior and setting the cost set to routers are necessary and so-called On-Line Simulation (OLS) system can operate these functions autonomously and periodically. In this paper, we construct the server prototype in OLS system, and evaluate its scalability and control performance in our testbed network. Experimental results show that the server succeeds in providing low-cost network management and real-time control even if there is the large amount of traffic on the network. Furthermore, the total throughput over the network was greatly improved by the OLS.
Managing large collections of data mining models
Authors: Bing Liu, Alexander Tuzhilin
Venue: Communications of the ACM (2008)

Data analysts and naive users alike in information-intensive organizations need automated ways to build, analyze, and maintain very large collections of data mining models.
Mastering combinatorial explosion with the tobias-2 test generator
Authors: Yves Ledru, Frédéric Dadeau, Lydie du Bousquet, Sébastien Ville, Elodie Rose
Venue: Proceedings of the twenty-second IEEE/ACM international conference on Automated software engineering (2007)

This paper briefly describes the second version of the Tobias combinatorial test generator. This version improves the architecture of the tool to include filtering and test selection mechanisms. These mechanisms, associated with an efficient implementation, allow to generate and filter test suites of up to 1 million test cases.
NoC Topologies Exploration based on Mapping and Simulation Models
Authors: Luciano Bononi, Nicola Concer, Miltos Grammatikakis, Marcello Coppola, Riccardo Locatelli
Venue: Proceedings of the 10th Euromicro Conference on Digital System Design Architectures, Methods and Tools (2007)

NoC architectures are considered the next generation of communication infrastructure for future systems-onchip. Selection of the network architecture and mapping of IP nodes onto the NoC topology are two important research topics. In this paper we compare well known NoC interconnect systems, specifically, Ring, 2d-Mesh, Spidergon and unbuffered Crossbar using theoretical uniform traffic based on the request/reply paradigm as well as a realistic traffic based on a Mpeg4 application. The IP mapping is computed by the SCOTCH partitioning tool opportunely modified to maximize selected embedding quality criteria under multiple topological constraints.
An energy consumption framework for distributed java-based systems
Authors: Chiyoung Seo, Sam Malek, Nenad Medvidovic
Venue: Proceedings of the twenty-second IEEE/ACM international conference on Automated software engineering (2007)

In this paper we define and evaluate a framework for estimating the energy consumption of Java-based software systems. Our primary objective in devising the framework is to enable an engineer to make informed decisions when adapting a system's architecture, such that the energy consumption on hardware devices with a finite battery life is reduced, and the lifetime of the system's key software services increases. Our framework explicitly takes a component-based perspective, which renders it well suited for a large class of today's distributed, embedded, and pervasive applications. The framework allows the engineer to estimate the software system's energy consumption at system construction-time and refine it at runtime. In a large number of distributed application scenarios, the framework showed very good precision on the whole, giving results that were within 5% (and often less) of the actually measured power losses incurred by executing the software. Our work to date has also highlighted a number of possible enhancements
The digital teaching legacy of the International Polar Year (IPY): Details of a present to the global village for achieving sustainability
Authors: Falk Huettmann
Venue: Proceedings of the 18th International Conference on Database and Expert Systems Applications (2007)

IPY helps to overcome national and other borders and constraints towards better information access and management of precious natural resources worldwide. It carries promises of a sustainable global village. Beyond the polar regions, IPY will leave a global legacy, most of it is digital and can be expressed as new data and synthesized information. IPY will affect how we do and fund science, how we administer the globe, how we teach and evaluate, and eventually, how society lives and carries out business and democracy. IPY offers solutions in times of massive global resource pressures, and deserves our full support. However, it needs to be assured that IPY remains balanced in its economic, social and ecological concepts. Teaching is the key to its success.
High-k TixSi1-xO2 thin films prepared by co-sputtering method
Authors: Sungyeon Kim, Moon-Ho Ham, Byeong-Yun Oh, Hyun Jae Kim, Jae-Min Myoung
Venue: Microelectronic Engineering (2008)

We report on high-k Ti"xSi"1"-"xO"2 thin films prepared by RF magnetron co-sputtering using TiO"2 and SiO"2 targets at room temperature. The Ti"xSi"1"-"xO"2 thin films exhibited an amorphous structure with nanocrystalline grains of 3-30nm having no interfacial layers. The XPS analyses indicate that stoichiometric TiO"2 phases in the Ti"xSi"1"-"xO"2 films increased due to stronger Ti-O bond with increasing TiO"2 RF powers. In addition, the electrical properties of the Ti"xSi"1"-"xO"2 films became better with increasing TiO"2 RF powers, from which the maximum value of the dielectric constant was estimated to be ~30 for the samples with TiO"2 RF powers of 200 and 250W. The transmittance of the Ti"xSi"1"-"xO"2 films was above 95% with optical bandgap energies of 4.1-4.2eV. These results demonstrate a potential that the Ti"xSi"1"-"xO"2 thin films were applied to a high-k gate dielectric in transparent thin film transistors as well as metal-oxide-semiconductor field-effect transistors.
Behavioral interpretation of the object-oriented paradigm for interconnected dynamic system modeling
Authors: T. Bastogne
Venue: International Journal of Systems Science (2007)

This article presents a mathematical interpretation of the object-oriented modeling paradigm inspired from the Willems' behavioral approach of systems theory. The object modeling of interconnected dynamic systems is introduced independently from any computer language and expressed as a set computation problem. Two behavioral representations (complete and partial) of an object are defined. Three object relationships, i.e. instantiation, composition and generalization are examined in the behavioral framework. Each definition is illustrated by basic examples, e.g. a storage tank, a resistor, a control valve and an electrical circuit. The implementation of the behavioral representations into the object-oriented language Modelica is finally presented.
The Research on the Construct Technology of the Test System Based on the Network
Authors: Qian Feng, Meng Chen
Venue: Proceedings of the Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing - Volume 02 (2007)

This paper analyses completely the general network models and network structure patterns currently and discusses their characteristics and implementation approaches. The paper also summarizes similarities and differences of these network models and their merits and disadvantages. Based on the above research, the paper puts forward the thought of system design for test system based on network .The test system has changed from the previous concentrative mode to the distributive mode which is on the network and it should develop into the system with the qualities of openness, inter-operability, networking. The networking test nodes should possess the qualities as extensibility and communality. This paper also discusses the software design of the test system model based on the network and puts forward a kind of design plan for the structure of the networked test system that adopts the hierarchy plus the functional interface. The software design of networked test system closely encompasses the thought of modularization, generalization and standardization.
Fair waiting protocol: achieving isolation in wireless sensornets
Authors: Jung Il Choi, Jung Woo Lee, Zhe Chen, Philip Levis
Venue: Proceedings of the 5th international conference on Embedded networked sensor systems (2007)

We present the Fair Waiting Protocol(FWP), which isolates the operations of competing protocols on CSMA networks. Utilizing layer 3 information, the grant-to-send mechanism prevents collisions on data paths. FWP enables the grant-to-send to be shared among protocols, extending the collision avoidance mechanism into protocol isolation.