ppxscal/embedding_network huggingface dataset:
Motion Prediction for Online Gaming
Authors: Rynson W. Lau, Addison Chan
Venue: Motion in Games: First International Workshop, MIG 2008, Utrecht, The Netherlands, June 14-17, 2008. Revised Papers (2008)

In a multiplayer online game, multiple players located at different geographical locations may participate and interact with each other within a shared game scene through the Internet. Unfortunately, online games generally suffer from the network latency problem, in particular when the players need to interact with each other. We have been developing a geometry streaming environment to support online gaming. As a player moves around in the game scene, geometry information relevant to the player are dynamically sent to the client machine. Such a streaming environment has many advantages, but it also exacerbates the network latency problem in online gaming. In this note, we look at how motion prediction may be used to support multiplayer online gaming and discuss some problems and issues needed to be addressed. We first present existing work on motion prediction. We then discuss our previous work on short-term prediction and our current work on long-term prediction to support online gaming. Finally, we also discuss our work in combining short-term prediction with long-term prediction for geometry prefetching.
Comparison of transmittance and reflectance to detect insect infestation in Montmorency tart cherry
Authors: Juan Xing, Daniel Guyer
Venue: Computers and Electronics in Agriculture (2008)

Different measurement modes, reflectance and transmittance, were compared for their ability to identify the internal insect infestation in tart cherry (c.v. Montomorency) using visible and near infrared spectroscopy. The cherries were collected in the summers of 2004, 2005, 2006 and 2007 from different orchards in Michigan. The samples included intact (Level 0) as well as infested cherries with different damage levels (Levels 1-5). The spectra were recorded for whole cherries with a spectroradiometer within a wavelength region between 550 and 950nm. MANOVA analysis indicates that the spectral data, both of the transmittance or reflectance, basically falls into three clusters, showing that the intact cherries and the cherries with Level 1 infestation (slightly infested) are in one cluster; Samples with infestation degree from Levels 3 to 5 (seriously infested) are clearly distinguishable from the intact and slight infested samples; the cherries with Level 2 infestation degree are scattered in between the intact and serious infested samples. According to the results of the discriminant analysis, transmittance works slightly better than reflectance in terms of the total classification accuracy. Spectroscopic technology should provide the cherry industry with a valuable tool for rapidly detecting insect infestation in tart cherry.
Awareness of Concurrent Changes in Distributed Software Development
Authors: Claudia-Lavinia Ignat, Gérald Oster
Venue: Proceedings of the OTM 2008 Confederated International Conferences, CoopIS, DOA, GADA, IS, and ODBASE 2008. Part I on On the Move to Meaningful Internet Systems: (2008)

Traditional software development tools such as CVS and Subversion do not inform users about concurrent modifications while they work on shared projects in their local workspaces. We propose an awareness mechanism that informs users about location of concurrent changes at the level of class, method and line. Developers are provided with a preview of the concurrent changes made by other contributors on the project. They can continue to change and test their code without the need to integrate concurrent changes. We present the underlying algorithms of our proposed awareness mechanism.
Radiance-based validation of the V5 MODIS land-surface temperature product
Authors: Z. Wan, Z. -L. Li
Venue: International Journal of Remote Sensing (2008)

This paper presents the procedure and results of the radiance-based validation approach for the Moderate Resolution Imaging Spectroradiometer (MODIS) Land-Surface Temperature (LST) product. Surface emissivity spectra were retrieved by a sun-shadow method from surface-leaving radiance spectra measured with a thermal infrared (TIR) spectroradiometer in the 3.5-14 µm spectral region under sunshine and sun-shadow conditions. By using the measured surface emissivity spectrum and atmospheric profiles obtained by radiosonde balloons, and the LST values at validation sites in the V5 MODIS level-2 LST products, radiative transfer simulations were made with the MODTRAN4 code to calculate the top-of-atmosphere (TOA) radiance values in MODIS band 31 (L31). By adjusting the LST input values in the simulations to match the calculated L31 values to the MODIS measured radiance (MOD L31) values, MOD L31 inverted LSTs can be obtained. The MODIS LST product was validated by comparison to the values of the MOD L31 inverted LSTs. This approach compares well with the conventional temperature-based approach. The results of the radiance-based validation indicate that the accuracy of the MODIS LST product is better than 1 K in most cases, including lake, vegetation and soil sites in clear-sky conditions. The errors in the split-window retrieved LSTs may be larger in bare soil sites and highly heterogeneous sites due to large uncertainties in surface emissivities. The results of the radiance-based validation also reveal the weakness of the split-window algorithm used for the generation of the MODIS LST product in two situations: one in cases where LSTs are larger than the air temperature at the surface level (T s-air) by more than 16 K and the columnar water vapour (cwv) is larger than 1.5 cm, and another in cases under the influence of thin cirrus clouds or heavy aerosol loadings. These two situations were not considered in the development of the current MODIS LST algorithm.
Effective Ranking and Recommendation on Web Page Retrieval by Integrating Association Mining and PageRank
Authors: Ja-Hwung Su, Bo-Wen Wang, Vincent S. Tseng
Venue: Proceedings of the 2008 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology - Volume 03 (2008)

Nowadays, the well-known search engines, such as Google, Yahoo, MSN, etc, have provided the users with good search results based on special search strategies. However there still exist some problems unsolved for traditional search engines, including: 1) the gap between user’s intention and searched results is not easy to narrow down under the global search space, and 2) user’s interested pages hidden in the local website are not associated with the search results. To deal with such problems, in this paper, we propose a novel approach for personalized page ranking and recommendation by integrating association mining and PageRank so as to meet user’s search goals. Moreover, by mining the users’ browsing behaviors, we can successfully bridge the gap between global search results and local preferences. The effectiveness of our proposed approach was verified through experimental evaluations.
3D model of a sector of the South Scotia Ridge (Antarctica)
Authors: Sara Susini, Mauro De Donatis
Venue: Computers Geosciences (2009)

A three-dimensional geological model was built to show and analyse a northern sector of the Scotia-Antarctica transform plate boundary. The South Scotia Ridge is a 400km long submerged continental structural high representing the eastern continuation of the Antarctic Peninsula. South Scotia Ridge runs approximately in the E-W direction, separating Scotia Sea Plate from Antarctica Plates. Structures, due to the transform plate margin, are considered to be concentrated inside this continental high. The three-dimensional model, built using seismic profiles and a digital elevation model, is a powerful tool to visualize and help to understand deep geological structures. Maps and profiles, on the contrary, only give a two-dimensional view, and do not show the structure of the continental-oceanic boundary at depth. The model shows that the deformation style of the continental-oceanic boundary, and of the oceanic crust nearby, is related to the left-lateral movement of the main transform fault system. Furthermore, it seems to be connected to the orientation and geometry of the South Scotia Ridge with respect to the homogeneous deformation regime, which affects the entire Scotia Plate. Moving from west to east, the NW-dipping main fault surface becomes almost vertical with a sinistral strike-slip movement in the central sector. To the east, a south-dipping plane decreases its inclination and changes orientation (from E-W to ESE-WNW): here shortening features are visible. The three-dimensional geological model presents a western and central province wherein the continental-oceanic boundary involves the fragmented continental blocks, the continental slope, the oceanic basement and sediments. The sedimentary cover and the oceanic basement are not deformed in the eastern province.
Structural attributes of three forest types in central Spain and Landsat ETM+ information evaluated with redundancy analysis
Authors: Antonio Vazquez de la Cueva
Venue: International Journal of Remote Sensing (2008)

Structural attributes of forest, such as canopy crown closure, stand height, stem density and basal area, derived from the third Spanish National Forest Inventory (IFN-3) were used in combination with spectral information derived from Landsat Enhanced Thematic Mapper Plus (ETM+) imagery and topographic information to evaluate their relationships. To deal with the variability found in the literature, three different types of vegetation, dominated by conifers, evergreen sclerophyll and broad-leaved deciduous trees, were analysed. In addition, the analyses were performed using three sets of plots filtered to be successively more homogeneous. A multivariate canonical ordination method, redundancy analysis (RDA), was used to enable the simultaneous evaluation of the two data sets and provide a useful graphical output highlighting the relationships between response (structural attributes) and explanatory (spectral and topographic) variables. Rank correlation analyses were also performed. The low percentage of explained variance at the multivariate analyses and low rank correlation coefficients made it difficult to derive practical empirical models. The strong influence of vegetation type on the results was confirmed, given that each type was sensitive to a different kind of spectral information. Finally, the results did not allow validation of the hypothesis that the relationship should be better when using a more homogeneous set of plots.
Adaptive and optimal control of a non-linear process using intelligent controllers
Authors: N. S. Bhuvaneswari, G. Uma, T. R. Rangaswamy
Venue: Applied Soft Computing (2009)

A time-optimal control for set point changes and an adaptive control for process parameter variations using neural network for a non-linear conical tank level process are proposed in this work. Time-optimal level control was formulated using dynamic programming algorithm and basic properties of the solutions were analysed. It was found that the control is of bang-bang type and there is only one switching. In this method, a mathematical step-by-step procedure is used to obtain the optimal valve position path with one switching and is trained by neural network, based on the back-propagation algorithm. The dynamic programming procedure allows the set point to be reached as fast as possible without overshoot. An adaptive system is also designed and proved to be useful in adjusting the trained parameter of the dynamic programming based neural network for the process parameter variations. A prototype of conical tank level system has been built and implementation of dynamic programming based neural network control algorithm for set point changes and implementation of adaptive control for process parameter variations are performed. Finally, the performance is compared with conventional control. The results prove the effectiveness of the proposed optimal and adaptive control schemes.
Analysis of a mixed-use urban wifi network: when metropolitan becomes neapolitan
Authors: Mikhail Afanasyev, Tsuwei Chen, Geoffrey M. Voelker, Alex C. Snoeren
Venue: Proceedings of the 8th ACM SIGCOMM conference on Internet measurement (2008)

While WiFi was initially designed as a local-area access network, mesh networking technologies have led to increasingly expansive deployments of WiFi networks. In urban environments, the WiFi mesh frequently supplements a number of existing access technologies, including wired broadband networks, 3G cellular, and commercial WiFi hotspots. It is an open question what role city-wide WiFi deployments play in the increasingly diverse access network spectrum. We study the usage of the Google WiFi network deployed in Mountain View, California, and find that usage naturally falls into three classes, based almost entirely on client device type. Moreover, each of these classes of use has significant geographic locality, following the distribution of residential, commercial, and transportation areas of the city. Finally, we find a diverse set of mobility patterns that map well to the archetypal use cases for traditional access technologies.
Uniform tag-based rich component generation for web application development
Authors: Quan Liang Chen, Takao Shimomura, Nhor Sok Lang, Kenji Ikeda
Venue: WSEAS Transactions on Information Science and Applications (2007)

A variety of rich client technologies such as Flash, Flex, OpenLaszlo, JavaScript, AJAX, and Applet have been employed to develop Web applications. They can display flexible and powerful graphical user interface in Web pages and excel the original functions of Web browsers that display HTML documents. This paper presents a rich-component definition method that enables programmers to easily write Web pages that contain rich components, regardless of the types of rich clients. This separates Web programming from Web page design, and we can share Web application development with other developers.
Unit Distances and Diameters in Euclidean Spaces
Authors: Konrad J. Swanepoel
Venue: Discrete Computational Geometry (2009)

We show that the maximum number of unit distances or of diameters in a set of n points in d-dimensional Euclidean space is attained only by specific types of Lenz constructions, for all d&#x2265;4 and n sufficiently large depending on d. As a corollary, we determine the exact maximum number of unit distances for all even d&#x2265;6 and the exact maximum number of diameters for all d&#x2265;4 and all n sufficiently large depending on d.
Bargaining in Markets with One-Sided Competition: Model and Analysis
Authors: Nicola Gatti
Venue: Proceedings of the 2008 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology - Volume 02 (2008)

The automation of bargaining agents within markets is a challenging open problem. We study one-sided competition when there are one seller and several buyers and agents can exploit the outside option. We extend the models from the state-of-the-art to capture competition among buyers, we produce an efficient solving algorithm, and we show the effectiveness of proposed model.
Analyzing a Paradox in Dempster-Shafer Theory
Authors: Wei Xiong
Venue: Proceedings of the 2008 Fifth International Conference on Fuzzy Systems and Knowledge Discovery - Volume 05 (2008)

Zadeh has criticized Dempster-Shafer (D-S) theory with a famous counter-example, where an almost impossible case based on two bodies of evidence produces a certain outcome by Dempster's rule of combination. This paper investigates this intuitive paradox by justifying Dempster's rule of combination under Shafer's interpretation for D-S theory. Under Shafer's interpretation, the applicability of Dempster's rule of combination relies on that the bodies of evidence, which will be combined, are D-S independent. The cause of the paradox is that Dempster's rule of combination is applied in a situation that does not satisfy this necessary condition.
3D modeling of uranium-bearing solution-collapse breccias in Proterozoic sandstones (Athabasca Basin, Canada)-Metallogenic interpretations
Authors: Christian Le Carlier de Veslud, Michel Cuney, Guillaume Lorilleux, Jean-Jacques Royer, Michel Jébrak
Venue: Computers Geosciences (2009)

Unconformity-related uranium deposits are the highest grade, large tonnage uranium resources in the world. In the Athabasca Basin (northern Saskatchewan, Canada), which is the premier host for unconformity-type deposits, the ore deposits are frequently hosted and surrounded by breccias in sandstone. The significance of these breccias and their relation to mineralization are of major importance for the genesis of these high-grade deposits. Therefore, a modeling study, integrating results from structural geology and petrology, was performed with the gOcad 3D modeling software, in order to decipher geometrical and geological relationships between breccias, faults and mineralization zones. Mineralized bodies and the sudoite-dravite breccia bodies display strong spatial correlations. They appear to be controlled by reverse shear zones cross-cutting the unconformity and containing graphite in the basement. Geochemical computations evidenced that volumetric water-rock ratios up to 10,000 could be obtained in these breccia bodies for volume losses of up to 90%. Assuming reasonable values for quartz saturation, hydraulic conductivity and connected porosity, the minimal fluid volume and the time duration necessary to generate the sudoite-dravite breccia bodies were estimated at ca. 2km^3 and ca. 1Myr, respectively. The comparison of these results with literature data suggests that the formation of sudoite-dravite breccia and mineralization could have been coeval. It may be proposed that within the space created by the quartz dissolution in the breccia body, a mixing between basement and basinal fluids could have induced U deposition and allowed the development of high-grade mineralization. The first-order uranium solubility that this coeval formation would imply is consistent with literature data, which suggests that this conceptual model is reasonable.
Integration of Multiagent Systems and Semantic Web Services on a Platform Independent Level
Authors: Christian Hahn, Stefan Nesbigall, Stefan Warwas, Ingo Zinnikus, Klaus Fischer, Matthias Klusch
Venue: Proceedings of the 2008 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology - Volume 02 (2008)

This paper discusses an innovative mean on model-driven agent-based coordination of Semantic Web services. The general idea is to define a platform independent metamodel for Semantic Web services and integrate it into a platform independent metamodel for multiagent systems. A model-driven Semantic Web services matchmaker agent in combination with model transformations between the platform independent metamodel and existing Semantic Web service formats like OWL-S allow the seamless integration of Semantic Web services into multiagent systems on a platform independent level.
Best practices for eye tracking of television and video user experiences
Authors: Noor F. Ali-Hasan, Elizabeth J. Harrington, Joel B. Richman
Venue: Proceeding of the 1st international conference on Designing interactive user experiences for TV and video (2008)

Eye tracking is a usability tool that employs a device that measures on-screen eye fixations and movements to determine how users visually interact with an interface. In this paper, we present best practices for planning and moderating eye tracking sessions as well as offer details regarding the technical configuration used during our studies. We found that eye tracking is pivotal in determining complex usability issues that would be difficult to uncover with traditional observational and think-aloud techniques.
Throughput analysis and rate control for IEEE 802.11 Wireless LAN with hidden terminals
Authors: Ka-Lok Hung, Brahim Bensaou
Venue: Proceedings of the 11th international symposium on Modeling, analysis and simulation of wireless and mobile systems (2008)

In this paper, we develop a Markov model to evaluate the performance of WLAN in the presence of hidden terminals. We focus on characterizing and studying the scenario of an access point with a population of clients partitioned into two mutually hidden groups, and derive a model to estimate the network throughput and the individual nodes' throughput. We propose a general methodology to solve the Markov chain by forming a nonlinear system of equations which describes the relationship between the conditional state transition probabilities, the transmission attempts probability and the steady state probability. Unlike alternative approaches, it is not necessary to invoke iterative methods to solve this system. We also demonstrate how our methodology and model can be used to estimate the optimal stable rate for each source in the WLAN as a means for rate control to achieve a given fairness principle between hidden groups of nodes and avoid starvation or congestion collapse for one group. Simulation results attest to the accuracy of our proposed model.
Dynamic polar diagram
Authors: Bahram Sadeghi Bigham, Ali Mohades, Lidia Ortega
Venue: Information Processing Letters (2008)

The polar diagram [C.I. Grima, A. Marquez, L. Ortega, A new 2D tessellation for angle problems: The polar diagram, Computational Geometry 34 (2006) 58-74] of a set of points on the plane and the contracted dual of polar diagram (CDPD) [B. Sadeghi Bigham, A. Mohades, The dual of polar diagrams and its extraction, in: International Conference of Computational Methods in Sciences and Engineering ICCMSE, vol. 7, Greece, 2006, pp. 451-454] have been introduced recently. In this paper, we introduce the Dynamic Polar Diagram and present an algorithm to find it using CDPD and a hash structure for point location problem. In the dynamic polar diagram, the points can be added to or removed from the point set. For this problem, a brute-force method runs in O(nlogn) time and also there is a sketch of an algorithm in [C.I. Grima, A. Marquez, L. Ortega, A new 2D tessellation for angle problems: The polar diagram, Computational Geometry 34 (2006) 58-74] that takes O(n) time in all cases (best, average and worst). In our approach, we first determine an area out of which the polar diagram does not change due to insertion or deletion of a site. Then we present a new algorithm to solve the problem in O(k"p) time where k"p is the number of the sites whose polar regions are affected by the new addition or deletion of p.