ppxscal/embedding_network huggingface dataset:
Microsoft Office Communications Server 2007 R2 Resource Kit, 2nd edition
Authors: Rui Maximo, Rick Kingslan, Rajesh Ramanathan, Nirav Kamdar
Venue:  (2009)

Get the definitive resource for deploying, configuring, and supporting Office Communications Server 2007 now fully updated. Take advantage of expert insights direct from the Microsoft Office Communications Server Team. This official Microsoft RESOURCE KIT delivers in-depth technical guidance on architecture, deployment, security issues, administration, performance tuning, and troubleshooting. You ll also discover essential information for working with VoIP and phone integration features. In addition, you get more than 150 timesaving scripts, tools, and other job aids for automating administration, plus an eBook for the entire RESOURCE KIT on CD.
Analyses for Durability and System Design Lifetime: A Multidisciplinary Approach
Authors: Joseph H. Saleh
Venue: Cambridge Aerospace Series (2007)

An issue in engineering design is a system's design lifetime. This book provides a systemic qualitative and quantitative approach to these problems addressing, first, the technicality of durability, second, the marginal cost of durability, and, third, the durability choice problem for complex systems with network externalities (competition and market uncertainty) and obsolescence (technology evolution). Also addressed is the increasing tension between the design lifetimes of complex systems and the shortening time scales associated with the obsolescence of the technology. The book ends with a discussion of flexibility in system design. Dr. Joseph H. Saleh is an Assistant Professor of Aerospace Engineering at the Georgia Institute of Technology. He received his Ph.D. from the Department of Aeronautics and Astronautics at MIT and served as the Executive Director for the Ford-MIT Alliance. His research focuses on issues of design lifetime and how to embed flexibility in the design of complex engineering systems in general and in aerospace system in particular. Dr. Saleh is the author or co-author of 50 technical publications and the recipient of numerous awards for his teaching and research contributions. He served as a technical consultant to NASA's Jet Propulsion Laboratory and has collaborated on research projects with various aerospace companies. 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
Neural Network Modeling of a Magnetorheological Damper
Authors: Mauricio Zapateiro, Ningsu Luo
Venue: Proceeding of the 2007 conference on Artificial Intelligence Research and Development (2007)

This paper presents the results of modeling a magnetorheological (MR) damper by means of a neural network. TheMR damper is a device extensively used to mitigate hazardous vibrations in systems such as vehicles, bridges and buildings. The advantages of these dampers over other devices of their class rely on the cost, size, simplicity and performance. However, these devices are highly nonlinear; their dynamics is characterized by friction and hysteresis, phenomena that has been difficult to model following physical laws. In this paper, a recurrent neural network is trained to reproduce the behavior of the damper and it will be shown that the results are better that those obtained by approximate physical models.
False name manipulations in weighted voting games: splitting, merging and annexation
Authors: Haris Aziz, Mike Paterson
Venue: Proceedings of The 8th International Conference on Autonomous Agents and Multiagent Systems - Volume 1 (2009)

An important aspect of mechanism design in social choice protocols and multiagent systems is to discourage insincere and manipulative behaviour. We examine the computational complexity of false-name manipulation in weighted voting games which are an important class of coalitional voting games. Weighted voting games have received increased interest in the multiagent community due to their compact representation and ability to model coalitional formation scenarios. Bachrach and Elkind in their AAMAS 2008 paper examined divide and conquer false-name manipulation in weighted voting games from the point of view of Shapley-Shubik index. We analyse the corresponding case of the Banzhaf index and check how much the Banzhaf index of a player increases or decreases if it splits up into sub-players. A pseudo-polynomial algorithm to find the optimal split is also provided. Bachrach and Elkind also mentioned manipulation via merging as an open problem. In the paper, we examine the cases where a player annexes other players or merges with them to increase their Banzhaf index or Shapley-Shubik index payoff. We characterize the computational complexity of such manipulations and provide limits to the manipulation. The annexation non-monotonicity paradox is also discovered in the case of the Banzhaf index. The results give insight into coalition formation and manipulation.
Use of mobile phone technologies in learning
Authors: Chrisina Draganova
Venue: Proceedings of the 14th annual ACM SIGCSE conference on Innovation and technology in computer science education (2009)

This work investigates the potential of using mobile phone technologies in learning and teaching. Experiments with three different systems are presented.
A class of stable spectral methods for the Cahn-Hilliard equation
Authors: Li-ping He, Yunxian Liu
Venue: Journal of Computational Physics (2009)

In this work, the initial-boundary value problem of two-dimensional Cahn-Hilliard equation is considered. A class of fully discrete dissipative Fourier spectral schemes are proposed. Moreover, semi-implicit prediction-correction schemes are presented. The numerical simulations are performed to demonstrate the effectiveness of the proposed schemes.
Retail Exposures Credit Scoring Models for Chinese Commercial Banks
Authors: Yihan Yang, Guangli Nie, Lingling Zhang
Venue: Proceedings of the 9th International Conference on Computational Science (2009)

This paper firstly discussed several credit scoring models and their development history, then designed the target system of individual credit scoring with individual housing loans data of a stated-owned commercial bank and logistic method, and established an individual credit scoring model including testing. Finally, the paper discussed the application of the individual credit scoring model in consumer credit domain, and brought forward corresponding conclusions and policies.
An Adaptive Wavelet Networks Algorithm for Prediction of Gas Delay Outburst
Authors: Xinyu Li
Venue: Proceedings of the 6th International Symposium on Neural Networks: Advances in Neural Networks - Part III (2009)

An adaptive wavelet networks algorithm for prediction of gas outburst is proposed in this paper. First, adaptive clustering algorithm is first used to determine initial parameters of wavelet network according to the results of the clustering. Then genetic algorithm and SVM-RFE is adopted to tune the structure of the wavelet network and adjust the network parameters to improve generalization performance. Finally, the simulation for prediction of gas outburst is discussed, and the result shows the validity of the proposed algorithm.
Human Factor Modeling for Development of Learning Support Systems Facilitating Meta-Cognition
Authors: Kazuhisa Seta, Kei Tachibana, Motohide Umano, Mitsuru Ikeda
Venue: Proceeding of the 2005 conference on Towards Sustainable and Scalable Educational Innovations Informed by the Learning Sciences: Sharing Good Practices of Research, Experimentation and Innovation (2005)

In the cognitive science field, many researchers have proposed a concept whereby meta-cognition plays an important role to acquire expertise and transfer it. Our research goal is to develop a methodology for building sophisticated learning systems which can effectively facilitate learners' meta-cognition. The intelligent novice is good at observing knowledge objectively and producing an efficient plan of learning processes. On the other hand, it is not so easy for an ordinary novice to perform meta-cognitive activities. We must model these two types of learners for building learning systems that can support ordinary novices effectively. In this paper, we build cognitive models that capture human factors to perform meta-cognitive activities as a basis of learning systems development for facilitating meta-cognition based on the knowledge in cognitive system engineering and cognitive psychology fields. Then, we build an intelligent novice model that can explain the characteristics of them. Lastly, we clarify design rationales of our system called Kassist based on the models.
Counting Flows over Sliding Windows in High Speed Networks
Authors: Josep Sanjuàs-Cuxart, Pere Barlet-Ros, Josep Solé-Pareta
Venue: Proceedings of the 8th International IFIP-TC 6 Networking Conference (2009)

Counting the number of flows present in network traffic is not trivial, given that the naive approach of using a hash table to track the active flows is too slow for the current backbone network speeds. Several algorithms have been proposed in the recent literature that can calculate an approximate count using small amount of memory and few memory accesses per packet. Fewer works have addressed the more complex problem of counting flows over sliding windows, where the main challenge is to continuously expire old information. One of the existing proposals is a straightforward adaptation of the direct bitmaps technique to the sliding window model. We present an algorithm called Countdown Vector that also builds upon the direct bitmaps technique. Our algorithm, however, obtains significant cost reductions both in terms of memory and CPU, by introducing an extra approximation in the mechanism in charge of the expiration of old information.
Development of a Picture Mail Database System to Supplement Mass Lectures Aiming to Promote the Sharing of Knowledge
Authors: Hitoshi Miyata, Norisuke Kozuki
Venue: Proceeding of the 2007 conference on Supporting Learning Flow through Integrative Technologies (2007)

A comment card system that is compatible with mobile phones (i-mode, ez-web, and SoftBank) was developed and has been used for four years since 2002 as part of university lectures with large attendance. As per the approach adopted in these lectures, the lecturer poses a question and the students connect to the comment card system Web site from their mobile phones and submit their opinions or questions. The submitted opinions and questions are categorized according to their themes and are displayed on a large LCD screen facing the students in a lecture room in real time. The lecturer then draws attention to these opinions and questions and uses them to develop the lecture. The system was further improved to enable pictures taken from mobile phones equipped with a digital camera to be submitted along with a title and a comment, which the SQL server automatically stores in a picture database. This enabled the students to search for, extract, and view the pictures and the accompanying comments submitted by themselves and others in a ubiquitous learning environment. The application of this system in actual mass lectures indicates that it can promote the exchange of opinions between students and assist those lectures that aim to realize knowledge sharing.
Investigating the benefits of automated negotiations in enhancing people's negotiation skills
Authors: Raz Lin, Yinon Oshrat, Sarit Kraus
Venue: Proceedings of The 8th International Conference on Autonomous Agents and Multiagent Systems - Volume 1 (2009)

Negotiation surrounds our day-to-day lives. Research in the field of automated negotiations has suggested the design and use of automated negotiators, on one hand to allow facilitation of the negotiation process by human negotiators and, on the other hand to provide automated agents that can negotiate on behalf of humans. Many papers present innovative agents and evaluate their efficacy in negotiations with other automated agents or people. Others focus on building negotiation support systems with the purpose of helping negotiators reach an agreement. Yet, the question still remains whether these systems or agents have the potential of improving people's negotiation skills. In this paper we attempt to shed more light on this topic. By means of extensive simulations with human negotiators we examine and compare several training methods and their implications on the improvement of negotiation skills of human negotiators.
Humpty Dumpty: Putting iBGP Back Together Again
Authors: Ashley Flavel, Jeremy Mcmahon, Aman Shaikh, Matthew Roughan, Nigel Bean
Venue: Proceedings of the 8th International IFIP-TC 6 Networking Conference (2009)

Humpty Dumpty is the anthropomorphic nursery-rhyme egg broken into many pieces. Similarly, we have many pieces of measurement data to represent the current iBGP state. However, unlike the nursery-rhyme where the King's men couldn't put Humpty together again, we present a systematic approach to putting all the pieces of measured iBGP data together to obtain a more complete picture of a network's routing state.Our technique determines the decisions made by all routers in a network. It is efficient, has no assumptions about router configuration and is accurate. We present a case-study of a large Tier-2 ISP, finding for those routers with adequate measurement infrastructure, we consistently find the egress location for 99.9999% of (router, prefix) pairs. Further, for the 85% of routers without measurement infrastructure we predict their decisions. This technique has been successfully applied in a `what-if' scenario and has future applications in the real-time analysis of routing decisions.
Technical Section: Efficient triangle-triangle intersection test for OBB-based collision detection
Authors: Jung-Woo Chang, Myung-Soo Kim
Venue: Computers and Graphics (2009)

We present an efficient algorithm for triangle-triangle intersection test in oriented bounding box (OBB)-based collision detection. In testing two OBB leaf nodes (i.e., rectangles), many intermediate computation results can be reused for the intersection test of two triangles they contain. It is considerably easier to detect redundant operations when we work in the local coordinate of the bounding rectangle rather than in the global coordinate of the object. The performance improvement of our algorithm is based on this observation that eliminates redundant computations. Compared with conventional algorithms, we have observed 15-79% improvement in computing time. We demonstrate the effectiveness of our approach using several experimental results.
XPath evaluation in linear time with polynomial combined complexity
Authors: Pawel Parys
Venue: Proceedings of the twenty-eighth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems (2009)

We consider a fragment of XPath 1.0, where attribute and text values may be compared. We show that for any unary query in this fragment, the set of nodes that satisfy the query can be calculated in time linear in the document size and polynomial in the size of the query. The previous algorithm for this fragment also had linear data complexity but exponential complexity in the query size.
Investor Competence, Trading Frequency, and Home Bias
Authors: John R. Graham, Campbell R. Harvey, Hai Huang
Venue: Management Science (2009)

People are more willing to bet on their own judgments when they feel skillful or knowledgeable. We investigate whether this “competence effect” influences trading frequency and home bias. We find that investors who feel competent trade more often and have more internationally diversified portfolios. We also find that male investors, and investors with larger portfolios or more education, are more likely to perceive themselves as competent than are female investors, and investors with smaller portfolios or less education. Our paper also contributes to understanding the theoretical link between overconfidence and trading frequency. Existing theories on trading frequency have focused on one aspect of overconfidence, i.e., miscalibration. Our paper offers a potential mechanism for the “better-than-average” aspect of overconfidence to influence trading frequency. In the context of our paper, overconfident investors tend to perceive themselves to be more competent, and thus are more willing to act on their beliefs, leading to higher trading frequency.
An IR model based on a sub-tree representation
Authors: Mohand Boughanem, Mustapha Baziz
Venue: Proceeding of the 2006 conference on Leading the Web in Concurrent Engineering: Next Generation Concurrent Engineering (2006)

The paper proposes an approach to information retrieval based on the use of a structure (ontology) that is used both for document (resp. query) indexing and query evaluating. The conceptual structure is hierarchical and it encodes the knowledge of the topical domain of the considered documents. It is formally represented as a tree. In this approach, the query evaluation is based on the comparison of minimal sub-trees containing the two sets of nodes corresponding to the concepts expressed in the document and the query respectively. The comparison is based on the computation of a degree of inclusion of the query tree in the document tree. Experiments undertaken on MuchMore benchmark showed the effectiveness of the approach.
A common database approach for OLTP and OLAP using an in-memory column database
Authors: Hasso Plattner
Venue: Proceedings of the 35th SIGMOD international conference on Management of data (2009)

When SQL and the relational data model were introduced 25 years ago as a general data management concept, enterprise software migrated quickly to this new technology. It is fair to say that SQL and the various implementations of RDBMSs became the backbone of enterprise systems. In those days. we believed that business planning, transaction processing and analytics should reside in one single system. Despite the incredible improvements in computer hardware, high-speed networks, display devices and the associated software, speed and flexibility remained an issue. The nature of RDBMSs, being organized along rows, prohibited us from providing instant analytical insight and finally led to the introduction of so-called data warehouses. This paper will question some of the fundamentals of the OLAP and OLTP separation. Based on the analysis of real customer environments and experience in some prototype implementations, a new proposal for an enterprise data management concept will be presented. In our proposal, the participants in enterprise applications, customers, orders, accounting documents, products, employees etc. will be modeled as objects and also stored and maintained as such. Despite that, the vast majority of business functions will operate on an in memory representation of their objects. Using the relational algebra and a column-based organization of data storage will allow us to revolutionize transactional applications while providing an optimal platform for analytical data processing. The unification of OLTP and OLAP workloads on a shared architecture and the reintegration of planning activities promise significant gains in application development while simplifying enterprise systems drastically. The latest trends in computer technology -- e.g. blade architecture, multiple CPUs per blade with multiple cores per CPU allow for a significant parallelization of application processes. The organization of data in columns supports the parallel use of cores for filtering and aggregation. Elements of application logic can be implemented as highly efficient stored procedures operating on columns. The vast increase in main memory combined with improvements in L1--, L2--, L3--caching, together with the high data compression rate column storage will allow us to support substantial data volumes on one single blade. Distributing data across multiple blades using a shared nothing approach provides further scalability.
Seismic Wave Field Modeling with Graphics Processing Units
Authors: Tomasz Danek
Venue: Proceedings of the 9th International Conference on Computational Science (2009)

GPGPU - general-purpose computing on graphics processing units is a very effective and inexpensive way of dealing with time consuming computations. In some cases even a low end GPU can be a dozens of times faster than a modern CPUs. Utilization of GPGPU technology can make a typical desktop computer powerful enough to perform necessary computations in a fast, effective and inexpensive way. Seismic wave field modeling is one of the problems of this kind. Some times one modeled common shot-point gather or one wave field snapshot can reveal the nature of an analyzed wave phenomenon. On the other hand these kinds of modelings are often a part of complex and extremely time consuming methods with almost unlimited needs of computational resources. This is always a problem for academic centers, especially now when times of generous support from oil and gas companies have ended.
Solving the GMM-model with a MOEA
Authors: F. Solano, R. Fabregat, B. Barán, Y. Donoso, J. L. Marzo
Venue: Proceeding of the 2005 conference on Artificial Intelligence Research and Development (2005)

The Generalized Multiobjective Multitree model (GMM-model) considers, for the first time, multitree-multicast load balancing with splitting in a multiobjective context. The mathematical solution of the GMM-model is a whole Pareto optimal set that includes several previously published results, according to surveyed publications. To solve the GMM-model, this paper proposes a multi-objective evolutionary algorithm (MOEA) inspired by the Strength Pareto Evolutionary Algorithm (SPEA). Experimental results considering up to 11 different objectives are presented for the well-known NSF network, with two simultaneous data flows.
Introduction to Linden Scripting Language for Second Life, 1st edition
Authors: Jeff Heaton
Venue:  (2007)

The Linden Scripting Language allows residents of the Second Life World to program the three dimensional objects around them. Without this programming objects built in Second Life are motionless and non-interactive. Adding a script enables an object to interact with the world around it. Second Life scripts allow objects such as cars, planes, amusement park rides, weapons and other entertainment devices to be created. This book teaches the beginning Second Life programmer to make use of the basics of the Linden Scripting Language. Language fundamentals, such as variables, loops, lists, events, functions and state machines are covered. The book then moves to more advanced topics such as user interaction and non-physical movement. Later chapters show how to use the Second Life physics engine to create vehicles. 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