ppxscal/embedding_network huggingface dataset:
Higher-order Voronoi diagrams on triangulated surfaces
Authors: S. Cabello, M. Fort, J. A. Sellarès
Venue: Information Processing Letters (2009)

We study the complexity of higher-order Voronoi diagrams on triangulated surfaces under the geodesic distance, when the sites may be polygonal domains of constant complexity. More precisely, we show that on a surface defined by n triangles the sum of the combinatorial complexities of the order-j Voronoi diagrams of m sites, for j=1,...,k, is O(k^2n^2+k^2m+knm), which is asymptotically tight in the worst case.
Fisheyes in the field: using method triangulation to study the adoption and use of a source code visualization
Authors: Mikkel Rønne Jakobsen, Kasper Hornbæk
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

Information visualizations have been shown useful in numerous laboratory studies, but their adoption and use in real-life tasks are curiously under-researched. We present a field study of ten programmers who work with an editor extended with a fisheye view of source code. The study triangulates multiple methods (experience sampling, logging, thinking aloud, and interviews) to describe how the visualization is adopted and used. At the concrete level, our results suggest that the visualization was used as frequently as other tools in the programming environment. We also propose extensions to the interface and discuss features that were not used in practice. At the methodological level, the study identifies contributions distinct to individual methods and to their combination, and discusses the relative benefits of laboratory studies and field studies for the evaluation of information visualizations.
An Improved AODV Routing Protocol Based on the Congestion Control and Routing Repair Mechanism
Authors: Li Xia, Zhaohui Liu, Yue Chang, Peng Sun
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 02 (2009)

AODV On-demand routing protocol is widely deployed in Ad Hoc network, but it has some drawbacks. This paper proposes an improved AODV protocol called AODV-I. By adding the congestion processing to the RREQ message and the routing repair mechanism to the RREQ message, the new protocol not only reduces the packet loss rate and the end-to-end latency, but also enhances the utilization rate of the network resources. Finally, we analyze the performance through simulation experiment.
Design and Implementation of University Focused Crawler Based on BP Network Classifier
Authors: Hua Jiang, Bing Han, Ying Lin, Dan Zuo, Yong Xing Ge
Venue: Proceedings of the 2009 Second International Workshop on Knowledge Discovery and Data Mining (2009)

The rapid growth of the World-Wide web poses unprecedented scaling challenges for general-purpose crawlers and search engines. Crawling the Web quickly and entirely is an expensive, unrealistic goal because of the required hardware and network resources. A focused crawler is an agent that targets a particular topic and visits and gathers only a relevant, narrow web segment while trying not to waste resources on irrelevant material. It can be used to build domain-specific web search portals and online personalized search tools. In this paper, we describe the design and implementation of a university focused crawler that runs on BP network classifier for prediction of the links leading to relevant pages. We present the flow of the system, discuss the performance, report the experimental results based on it. Our experiments show that the BP classifier performs very well in obtaining accurate relevant university Web resources.
Identifying web usability problems from eye-tracking data
Authors: Claudia Ehmke, Stephanie Wilson
Venue: Proceedings of the 21st British CHI Group Annual Conference on HCI 2007: People and Computers XXI: HCI...but not as we know it - Volume 1 (2007)

Eye-tracking research is increasingly used to supplement usability tests in both commercial and academic practice. However, while there has been research into links between eye-tracking metrics and usability problems, this has so far fallen short of establishing a general correlation scheme between the two. Consequently, practitioners are left to make subjective judgements when interpreting eye-tracking data. We address the lack of general guidance by proposing an initial correlation scheme based on data from an exploratory study which aimed to find a wide range of possible correlations between usability problems and eye-tracking patterns. User testing of two websites was conducted and a set of diverse usability problems was extracted from the data; these were then analysed and some were correlated with users' eye-tracking patterns. In addition to this initial correlation scheme, a further finding from this study is that usability problems are connected to not just a single eye-tracking pattern, but to a specific sequence of patterns. This sequence of patterns seems to arise from different coping strategies that users develop when a problem is experienced.
HTML: Complete Concepts and Techniques, Fifth Edition (Shelly Cashman Series), 5th edition
Authors: Gary B. Shelly, Denise M. Woods
Venue:  (2008)

Part of the highly successful Shelly Cashman series, this text provides a complete overview of HTML and leads the user through a clear, step-by-step, screen-by-screen approach to learning. Readers learn how to create a Web page using HTML, format the page, add graphics, and more.
An information base for procedure independent design of information systems
Authors: Levent Ormancioglu
Venue: Proceedings of the May 19-22, 1980, national computer conference (1980)

An information system contains a vast number of logical statements in addition to data. These logical statements are used to control the retrieval and use of data for applications. Systems Design is the process of translating the information requirements of an organization to a set of logical statements which operate on the observed data to generate new data. The 'derived data' generated in this fashion could actually be used for decision support or stored back in the data base for future use; however, the storage is rare since it can always be regenerated using the logical statements. The logical statements are often expressed using a procedural programming language mostly aided by Data Base Management Systems which accomplish to decouple the physical data structure and the application system designer's logical view of it. This feature, called 'data independence,' has a number of advantages such as: a. simpler interface with the applications programmer b. machine optimized physical design c. modifications in the physical structure without changing the application programs d. high portability to different computer systems.
Forecasting the turning time of stock market based on Markov-Fourier grey model
Authors: Yen-Tseng Hsu, Ming-Chung Liu, Jerome Yeh, Hui-Fen Hung
Venue: Expert Systems with Applications: An International Journal (2009)

This paper presents an integration prediction method including grey model (GM), Fourier series, and Markov state transition, known as Markov-Fourier grey model (MFGM), to predict the turning time of Taiwan weighted stock index (TAIEX) for increasing the forecasting accuracy. There are two parts of forecast. The first one is to build an optimal grey model from a series of data, the other uses the Fourier series to refine the residuals produced by the mentioned model. Finally, the Markov state scheme is used for predicting the possibility of location results to promote the intermediate results generated by the Fourier grey model (FGM). It is evident that the proposed approach gets the better result performance than that of the other methods.
Object-oriented model of a transportation system
Authors: Petr Cenek
Venue: Proceedings of the 12th WSEAS international conference on Computers (2008)

Model of a transportation system can serve to optimise some logistics or transportation processes. Management and control of these processes can be done on a macroscopic level using methods of operations research or on a microscopic level using simulations and control theory. The paper analyses characteristics of a transportation system and presents a concept suitable for both model types. Basic ideas are presented and a choice of common objects, attributes and methods is proposed for general use.
A Collaboration Mobile System for Epidemiology Investigation in the Wenchuan Earthquake-Stricken Area
Authors: Zhou Jieping, Zhang Lihui, Li Wenhang, Gong Jianhua, Fang Liqun, Cao Wuchun
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 03 (2009)

Communication is one of the major issue for the epidemiology investigation in the area affected by Wenchuan earthquake. A collaborative mobile system has been designed for the field epidemiology event investigation and disposal for it. To get more stable communication between field and indoor groups, provide more information to field investigators and experts, we designed a star communication topology. Because of the different networks and different terminals, an asymmetric client/server network has been designed for the collaboration between field and indoor workfellows. A prototype system has been implemented and tested in the Wenchuan earthquake stricken area, the results show the system works well and is very useful for field work and collaboration.
A recursion-based approach to simulating airline schedule robustness
Authors: Marcial Lapp, Shervin AhmadBeygi, Amy Cohn, Omer Tsimhoni
Venue: Proceedings of the 40th Conference on Winter Simulation (2008)

Flight disruptions due to events such as inclement weather or mechanical failure are an increasing occurrence in today's air travel. It is important to develop flight schedules that are not only economically feasible, but also provide opportunities to absorb these disruptions so as to reduce downstream delays. In this paper, we present a simulation algorithm to evaluate a flight schedule's ability to mitigate disruptions by analyzing propagation effects on the flight network. This task is challenging for two reasons: the interdependence of flights, due to shared resources (e.g. cockpit/flight crews, aircraft), and the cyclic nature of the schedule, which repeats on a daily basis. We show how a recursion-based approach to the simulation enables us to overcome these challenges.
Traversing Model Design Based on Strong-Association Rule for Web Application Vulnerability Detection
Authors: Zhenyu Qi, Jing Xu, Dawei Gong, He Tian
Venue: Proceedings of the 2009 International Conference on Computer Engineering and Technology - Volume 01 (2009)

With more important function in information society, software dependability has been in higher demand. Web application vulnerability has become one of the biggest threats for software security. Detecting and solving vulnerability is the effective way to enhance software dependability. Most active method traverses all web links and interactive units in traversing step, which is easy to cause low efficiency and no pertinence. This paper focuses on characteristic of web application, especially web pages and presents one traversing model based on high-related rule, which make detection more efficient. From hacker’s view, this model applies the HITS algorithm to generating a series of pages which may be used by hackers as attacking. Due to ignoring content in web pages for HITS algorithm, we adapt improved Apriori algorithm to get optimized frequency set, on basis of which we deduce high-related rule between properties of interactive unit and way of attacking. Finally, this paper presents the traversing model for web application vulnerability detection
Conflict Improvement Methods Based on IEEE 802.16 Mesh Networks
Authors: Ruyan Wang, Liang Chen, Yun Li, Zhanjun Liu, Ping Wang
Venue: Proceedings of the 2009 International Conference on Electronic Computer Technology (2009)

This paper firstly introduces the mesh structure of IEEE802.16, explains the three-way handshaking mechanism under the mesh structure, then questions the conflict problem existing in the previous protocols, and proposes a method to improve the three-way handshaking mechanism. According to simulation results, it performs well, not only shorten end to end delay, but also increase throughput.
RTZen: highly predictable, real-time java middleware for distributed and embedded systems
Authors: Krishna Raman, Yue Zhang, Mark Panahi, Juan A. Colmenares, Raymond Klefstad, Trevor Harmon
Venue: Proceedings of the ACM/IFIP/USENIX 2005 International Conference on Middleware (2005)

Distributed real-time and embedded (DRE) applications possess stringent quality of service (QoS) requirements, such as predictability, latency, and throughput constraints. Real-Time CORBA, an open middleware standard, allows DRE applications to allocate, schedule, and control resources to ensure predictable end-to-end QoS. The Real-Time Specification for Java (RTSJ) has been developed to provide extensions to Java so that it can be used for real-time systems, in order to bring Java's advantages, such as portability and ease of use, to real-time applications. In this paper, we describe RTZen, an implementation of a Real-Time CORBA Object Request Broker (ORB), designed to comply with the restrictions imposed by RTSJ. RTZen is designed to eliminate the unpredictability caused by garbage collection and improper support for thread scheduling through the use of appropriate data structures, threading models, and memory scopes. RTZen's architecture is also designed to hide the complexities of RTSJ related to distributed programming from the application developer. Empirical results show that RTZen is highly predictable and has acceptable performance. RTZen therefore demonstrates that Real-Time CORBA middleware implemented in real-time Java can meet stringent QoS requirements of DRE applications, while supporting safer, easier, cheaper, and faster development in real-time Java.
Factored sequence kernels
Authors: Nicola Cancedda, Pierre Mahé
Venue: Neurocomputing (2009)

In this paper we propose an extension of sequence kernels to the case where the symbols that define the sequences have multiple representations. This configuration occurs, for instance, in natural language processing, where words can be characterized according to different linguistic dimensions. The core of our contribution is to integrate early the different representations in the kernel, in a way that generates rich composite features defined across the various symbol dimensions.
Modular crossbar switch for large-scale multiprocessor systems: structure and implementation
Authors: Bernhard Quatember
Venue: Proceedings of the May 4-7, 1981, national computer conference (1981)

This paper describes the architecture of an innovative modular crossbar switch for large-scale multiprocessor systems; its modular design principle is given a particularly thorough treatment. The crucial points of this design principle are the utilization of bit-serial buses and an integration of a combination of crosspoints with its own microprogrammed controller, (which is designated as "configurational processor") into a single building block, preferably an IC. This innovative concept allows the implementation of full crossbar switches for systems up to about 128 processors at relatively low cost. The expense of a crossbar for a system with approximately 1024 processing elements is then comparable to that of the other parts of the whole system. A particular implementation of such a crossbar switch is embedded in a large-scale multimicroprocessor system being built at the Johannes Kepler University in Linz, Austria. This implementation is discussed in detail; emphasis is given to the complexity of its functional elements and its hardware expense. Since no ICs have yet been produced for the realization of the new building block for the crossbar mentioned above, this building block is realized on a printed circuit board using standard LSI-circuits.
On the stocks invest supervision based on advanced J2EE
Authors: Xiaoyan Yang, Weifeng Yin, Deliao Yu, Jiajie Pan
Venue: Proceedings of the 3rd WSEAS international conference on Computer engineering and applications (2009)

Along with Java technology progress, the superiority of J2EE 5.0 is gradualy appearing. Furthermore the invest of stocks is increasingly hot, so the paper tries to design and implement the system of stocks invest supervision by recent EJB3.0 under Hibernate and Struts conditions based on newly J2EE 5.0. The paper expores the implement of EJB persistence of data. The system is tested by several times, it runs effectively.
On the relevance of local synchronization for establishing a winner-take-all functionality of the gamma cycle
Authors: Thomas Burwick
Venue: Neurocomputing (2009)

Interneuron networks are key to the generation of gamma-frequency range (30-100Hz) oscillations that are observed in many brain regions. Motivated by the inhibitory effect of interneurons and summarizing experimental findings, it was recently proposed that the corresponding gamma cycle realizes a rapidly repeating winner-take-all algorithm, a role that was proposed to be compatible with binding-by-synchrony. Here, this interpretation is considered from the modeling perspective, starting from an oscillatory network model with columnar architecture and several stored patterns. Local synchronization is modeled as a so-called pooling mechanism. It is then argued and demonstrated that the locally synchronizing effect of the interneurons may be essential for realizing the winner-take-all behavior.
Mining Microsatellites in Paracentrotus.lividus and Aplysia. Californica Unigenes
Authors: Zhenlin Wei, Xiaolin Liu, Yaqing Chang
Venue: Proceedings of the 2009 International Conference on Electronic Computer Technology (2009)

In the present paper, 3325 and 563 EST-SSRs of two sea animal Paracentrotus.lividus and Aplysia. californica was in silico predicted by searching unigene databases, and the SSR length, frequency of different repeat types and compound SSR comprising was analyzed in detailed. The results showed that the SSR abundance of Aplysia unigene was more abundant then that of Paracentrotus. Tri- and dinucleotide motif was the most common motif in Aplysia and Paracentrotus SSRs, respectively. The SSR sizes, compound SSR comprising and motif frequency distribution was significantly different between these two sets of SSRs. The potential cross-species of selected SSRs was evaluated, demonstrating conserved di- or trinucleotide SSRs motifs and polymorphisms in length and nucleotides deleting and replacing exiting between these two species. Taken tighter, the results showed the unigene of Aplysia and Paracentrotus was enrich for developing of cross-species SSR markers and would facilitate evolution and comparative genome research of these two species.
Anytime heuristic search for partial satisfaction planning
Authors: J. Benton, Minh Do, Subbarao Kambhampati
Venue: Artificial Intelligence (2009)

We present a heuristic search approach to solve partial satisfaction planning (PSP) problems. In these problems, goals are modeled as soft constraints with utility values, and actions have costs. Goal utility represents the value of each goal to the user and action cost represents the total resource cost (e.g., time, fuel cost) needed to execute each action. The objective is to find the plan that maximizes the trade-off between the total achieved utility and the total incurred cost; we call this problem PSP Net Benefit. Previous approaches to solving this problem heuristically convert PSP Net Benefit into STRIPS planning with action cost by pre-selecting a subset of goals. In contrast, we provide a novel anytime search algorithm that handles soft goals directly. Our new search algorithm has an anytime property that keeps returning better quality solutions until the termination criteria are met. We have implemented this search algorithm, along with relaxed plan heuristics adapted to PSP Net Benefit problems, in a forward state-space planner called Sapa^P^S. An adaptation of Sapa^P^S, called Yochan^P^S, received a ''distinguished performance'' award in the ''simple preferences'' track of the 5th International Planning Competition.
A method for extension of generative topographic mapping for fuzzy clustering
Authors: Indranil Bose, Xi Chen
Venue: Journal of the American Society for Information Science and Technology (2009)

In this paper, a new method for fuzzy clustering is proposed that combines generative topographic mapping (GTM) and Fuzzy c-means (FCM) clustering. GTM is used to generate latent variables and their posterior probabilities. These two provide the distribution of the input data in the latent space. FCM determines the seeds of clusters, as well as the resultant clusters and the corresponding membership functions of the input data, based on the latent variables obtained from GTM. Experiments are conducted to compare the results obtained using FCM and the Gustafson-Kessel (GK) algorithm with the proposed method in terms of four cluster-validity indexes. Using simulated and benchmark data sets, it is observed that the hybrid method (GTMFCM) performs better than FCM and GK algorithms in terms of these indexes. It is also found that the superiority of GTMFCM over FCM and GK algorithms becomes more pronounced with the increase in the dimensionality of the input data set. &copy; 2009 Wiley Periodicals, Inc.
Computer simulation of solar electric generating plants in a utility grid
Authors: S. Young, O. Merrill, R. Knowles, Y. Gupta
Venue: Proceedings of the May 19-22, 1980, national computer conference (1980)

Solar electric power systems have the potential to supply power for industrial, commercial, institutional, and utility applications and to reduce consumption of non-renewable fossil fuels. However, widespread utilization of solar electric technologies in the United States will require that the solar systems be operated in parallel with, or as supplements to, the existing utility grid. For such systems, assumptions regarding future electric energy costs and rate structures have a major impact on solar system design and economics. Thus, in order to fully assess the economic worth of solar electric systems, it is necessary to evaluate their impacts on utility generation characteristics and to determine solar electric system design and cost relations within the context of the overall utility/solar system interaction.
Simulation of intelligent transport tools in container yards
Authors: Eugene Kindler
Venue: Proceedings of the 12th WSEAS international conference on Computers (2008)

The paper is a description of simulation models of container yards operated with ground-moving transport tools that anticipate possible conflicts in the labyrinth among stored containers and according to it determine their future paths as secure as possible. The transport tools are viewed as managed by a central computer that computes the shortest path for every transport tool when it needs it, simulates what could happen the future applying it and possibly modifies the computed path - all of that before the path is used. Therefore the simulation models of the container yards reflect the central computer of the yard and with it also the simulation models the computer handles. Moreover, the computing of the shortest path is implemented as another simulation model carried by the central computer, namely a model of a fictitious system.
On zeros of discrete orthogonal polynomials
Authors: Ilia Krasikov, Alexander Zarkh
Venue: Journal of Approximation Theory (2009)

We exploit difference equations to establish sharp inequalities on the extreme zeros of the classical discrete orthogonal polynomials, Charlier, Krawtchouk, Meixner and Hahn. We also provide lower bounds on the minimal distance between their consecutive zeros.