ppxscal/embedding_network huggingface dataset:
The Task Sharing Framework for Collaboration and Meta-Collaboration
Authors: Darren Pearce, Lucinda Kerawalla, Rose Luckin, Nicola Yuill, Amanda Harris
Venue: Proceeding of the 2005 conference on Artificial Intelligence in Education: Supporting Learning through Intelligent and Socially Informed Technology (2005)

This paper describes a novel and general framework for the sharing of collaborative tasks between multiple users. In contrast to the majority of existing software used in a collaborative context, software developed under this framework provides each user with their own identical yet independent copy of the task which, by default, only they themselves can manipulate. This represents a departure from traditional turn-taking and dual control collaborative interaction styles and is intended to reduce the domination of one user over others as well as to provide the space for effective collaboration. The visual representation of agreement and disagreement is particularly emphasised since this has the potential to constructively mediate the resolution of collaborative disputes, especially if agreement is required at various points during the task. Under the framework, it is also possible to emulate traditional collaborative interaction styles and, more importantly, dynamically vary between them, thus manipulating the collaborative affordances of the user interface. This is likely to scaffold conversation between the users about how they are working together to complete the task; users would be collaborating about their own collaborative process. The framework therefore holds significant potential to scaffold not only collaboration but also meta-collaboration.
Self-Architecting Software SYstems (SASSY) from QoS-annotated activity models
Authors: Sam Malek, Naeem Esfahani, Daniel A. Menasce, Joao P. Sousa, Hassan Gomaa
Venue: Proceedings of the 2009 ICSE Workshop on Principles of Engineering Service Oriented Systems (2009)

As the complexity associated with software development has increased, software engineers have sought novel ways to represent, reason about, and compose large-scale software systems. However, the majority of these approaches are geared to technically well versed engineers, making them unwieldy for use in a growing class of real-world pervasive computing systems. In this paper, we propose a new approach intended to address the current shortcomings in service-oriented software systems. Given the functional and QoS requirements specified by a domain expert in an activity oriented modeling language, an architecture satisfying the requirements is generated. We describe our approach in the context of a framework, entitled Self-Architecting Software SYstems (SASSY), which shapes our ongoing research and aims to automate the composition, analysis, adaptation, and evolution of service-oriented software systems.
Electronic government experiences: the case of Mexican federal portals
Authors: Andrés Hoffman, Rodolfo Torres, León David Pérez
Venue: Proceedings of the 10th Annual International Conference on Digital Government Research: Social Networks: Making Connections between Citizens, Data and Government (2009)

The purpose of this panel is to provide an exploratory review of the Mexican e-government efforts in general and the Mexican Federal Portals in particular. Panelists are Experts, web masters, and top level public officials, who will provide comments about the Mexican experience of reaching citizens online using technology. Some questions that this panel should address are: &bull; What are the Mexican portals doing in terms of information exchange? &bull; What are the most important Mexican policies to promote e-government in state and municipal web sites? &bull; What are the challenges faced by the people responsible of Mexican portals? &bull; What is a successful Web site in Mexico? Which are its main characteristics? From these starting questions, we want to create a good discussion that derives in additional topics for e-government research as an important tool to improve Mexican public administration and other governments in similar situations.
An Improved Algorithm for Online Unit Clustering
Authors: Hamid Zarrabi-Zadeh, Timothy M. Chan
Venue: Algorithmica (2009)

We revisit the online unit clustering problem in one dimension which we recently introduced at WAOA&#x2019;06: given a sequence of n points on the line, the objective is to partition the points into a minimum number of subsets, each enclosable by a unit interval. We present a new randomized online algorithm that achieves expected competitive ratio 11/6 against oblivious adversaries, improving the previous ratio of 15/8. This immediately leads to improved upper bounds for the problem in two and higher dimensions as well.
Increasing team collaboration using a mobile device-based communication tool
Authors: Kyungsoo Im, Tacksoo Im
Venue: Proceedings of the 47th Annual Southeast Regional Conference (2009)

Effective team collaboration often requires effective communication tools. Tools such as cell phones, email and web-based wikis have been used to communicate among project team members. However, these existing tools do not seem to be actively used during the course of a team project or information overload occurs where too much information is given that it is hard to track the progress of the project. The current generation of smart-phones can be utilized to create a team communication tool that encourages and facilitates team collaboration. As a mobile device is pervasive, it has great advantage in encouraging fast, easy and frequent communication between team members and increases the likelihood that communication is not ignored. We introduce a mobile device-based tool, called iProjectBuddy, which uses an iPhone and its capabilities to implement communication features that can enable effective team collaboration through frequent communication. By facilitating active participation in a team project, the overall success of a team project can be affected positively.
Ontology quality assurance through analysis of term transformations
Authors: Karin Verspoor, Daniel Dvorkin, K. Bretonnel Cohen, Lawrence Hunter
Venue: Bioinformatics (2009)

Motivation: It is important for the quality of biological ontologies that similar concepts be expressed consistently, or univocally. Univocality is relevant for the usability of the ontology for humans, as well as for computational tools that rely on regularity in the structure of terms. However, in practice terms are not always expressed consistently, and we must develop methods for identifying terms that are not univocal so that they can be corrected. Results: We developed an automated transformation-based clustering methodology for detecting terms that use different linguistic conventions for expressing similar semantics. These term sets represent occurrences of univocality violations. Our method was able to identify 67 examples of univocality violations in the Gene Ontology. Availability: The identified univocality violations are available upon request. We are preparing a release of an open source version of the software to be available at http://bionlp.sourceforge.net. Contact: karin.verspoor@ucdenver.edu
Brief paper: Linearization through state immersion of nonlinear systems admitting Lie symmetries
Authors: Laura Menini, Antonio Tornambè
Venue: Automatica (Journal of IFAC) (2009)

In this paper, it is shown that if a nonlinear system admits a Lie symmetry that can be transformed into its Poincare-Dulac normal form by a state diffeomorphism, then, under some technical conditions, such a nonlinear system can be immersed into a linear one. This allows us to compute in closed-form the flow, all algebraic invariant curves (through semi-invariants) of the nonlinear system, and Lyapunov functions to study stability properties.
Basis of the variable speed driving pumps parallel operation modeling
Authors: Mircea Grigoriu
Venue: Proceedings of the 10th WSEAS international conference on Mathematical and computational methods in science and engineering (2008)

The paper presents the computer modeling of parallel operating of variable speed pumps, with application for heating systems. There is developed the philosophy of automatically heating system operation, taking into account the practical considerations of general heating systems. On these bases, it is introduced the new notion of controlled operation characteristic of the installation and the effectiveness of the operation design optimization.
RESTful Web service composition with BPEL for REST
Authors: Cesare Pautasso
Venue: Data Knowledge Engineering (2009)

Current Web service technology is evolving towards a simpler approach to define Web service APIs that challenges the assumptions made by existing languages for Web service composition. RESTful Web services introduce a new kind of abstraction, the resource, which does not fit well with the message-oriented paradigm of the Web service description language (WSDL). RESTful Web services are thus hard to compose using the Business Process Execution Language (WS-BPEL), due to its tight coupling to WSDL. The goal of the BPEL for REST extensions presented in this paper is twofold. First, we aim to enable the composition of both RESTful Web services and traditional Web services from within the same process-oriented service composition language. Second, we show how to publish a BPEL process as a RESTful Web service, by exposing selected parts of its execution state using the REST interaction primitives. We include a detailed example on how BPEL for REST can be applied to orchestrate a RESTful e-Commerce scenario and discuss how the proposed extensions affect the architecture of a process execution engine.
Knowledge-Based Paradigms and their Applications in Industry
Authors: Lakhmi C. Jain
Venue: Proceeding of the 2008 conference on Knowledge-Based Software Engineering: Proceedings of the Eighth Joint Conference on Knowledge-Based Software Engineering (2008)

The Knowledge-Based Intelligent Engineering Systems Centre (KES) was established to provide a focus in South Australia for research and teaching activity in the area of intelligent information systems, defence and health industries. The overall goal is to synergise contributions from researchers in disciplines such as engineering, information technology, science, commerce and security. Knowledge-based paradigms offer many advantages such as learning and generalisation over conventional techniques. Knowledge-based Intelligent Engineering Systems Centre aims to provide applied research support to the Information, Defence and Health Industries. This talk will report the progress made in some of our research projects undertaken including aircraft landing support, teaming in multi-agent systems and hidden object detection. This talk will mainly focus on the industrial applications of knowledge-based paradigms.
Toward the New Generation of Intelligent Distributed Computing Systems
Authors: Robert Schaefer, Krzysztof Cetnarowicz, Bojin Zheng, Bartłomiej Śnieżyński
Venue: Proceedings of the 9th International Conference on Computational Science (2009)

This paper is an introduction to the works presented in Intelligent Agents and Evolvable Systems Workshop. The workshop focuses on the various applications of agent-oriented systems, the roles of evolution and interactions of agents to build intelligent systems.
Understanding Students' Online Forum Usage
Authors: Paulus Insap Santosa, Gee Kin Yeo, Julian Lin
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)

This paper reports the result of online survey to investigate online forum usage for different purposes. In general, there are two different purposes on why students engage in an online forum: to seek answer and to share ideas. Based on the Technology Acceptance Model and the Social Exchange Theory, we proposed three hypotheses. The hypotheses are to compare whether perceived ease of use and perceived usefulness have different effect on attitude toward seeking answers and on attitude toward sharing ideas, as well as whether intention to seek answers and to share ideas have the same effect on online forum usage. To test the hypotheses, we invited students who have some experiences on using online forum related to the course module. Of the three proposed hypotheses, two of them are confirmed by the data.
Impact of simulation time and network shape on the hop count and stability of routes for mobile ad hoc networks
Authors: Natarajan Meghanathan
Venue: Proceedings of the 47th Annual Southeast Regional Conference (2009)

Routing protocols for mobile ad hoc networks (MANETs) have been extensively studied in the literature. The most common mobility model used in these studies is the Random waypoint mobility model. Simulations are generally conducted for the first 1000 seconds of node movement under the Random waypoint mobility model. In this paper, we show that the performance of MANET routing strategies, namely minimum hop and stability-based strategies, varies with the range of the simulation time considered. Based on an extensive set of simulation studies conducted in this paper, we observe that routes incurred in the first 1000 seconds of node movement are bound to be unstable and have larger hop count when compared to routes computed in simulations with starting time greater than 1000 seconds of node movement. Similarly, we observe that routes incurred in nearly single-dimensional rectangular topologies are bound to be unstable and have larger hop count when compared with the routes incurred in square network topologies of the same area. We also observe that for a fixed network shape and node mobility, as the network density increases, the stability of routes increases. We run all of our simulations under diverse conditions of node mobility and network density.
A scalable, collaborative similarity measure for social annotation systems
Authors: Benjamin Markines, Filippo Menczer
Venue: Proceedings of the 20th ACM conference on Hypertext and hypermedia (2009)

Collaborative annotation tools are in widespread use. The metadata from these systems can be mined to induce semantic relationships among Web objects (sites, pages, tags, concepts, users), which in turn can support improved search, recommendation, and otherWeb applications. We build upon prior work by extracting relationships among tags and among resources from two social bookmarking systems, Bibsonomy.org and GiveALink.org. We introduce a scalable and collaborative measure that we name maximum information path (MIP) similarity. Our analysis shows that MIP outperforms the best scalable similarity measures in the literature. We are currently integrating MIP similarity into a number of applications under development in the GiveALink project, including search and recommendation, Web navigation maps, bookmark management, social networks, spam detection, and a tagging game to create incentives for collaborative annotations.
ComGIS-based decision support system for land-use structure optimization
Authors: Li Xiaoli, Yingyi Chen, Li Daoliang
Venue: Proceedings of the 13th WSEAS international conference on Applied mathematics (2008)

This article describes a decision support system for land-use structure optimization and land-use allocation. This system was established for the rural land managers to explore their land use options. It integrated database technology, expert system technology and spatial decision support system technology. The DSS consist of four components: a geographic information system (GIS), land use modules, a graphical user interface and land use planning tools. The linear programming, multi-objective planning, fuzzy clustering, and other land-use structure optimization algorithms are implemented on the ArcEngine software platform. The system has been applied in Beijing Pinggu area. The results suggest that this system can be a useful tool to support management decisions.
PMP Exam Success Series: Bootcamp Manual (with Exam Simulation CD-ROM), 8.0 edition
Authors: Tony Johnson
Venue:  (2009)

This product is for those taking the PMP Exam after June 30, 2009. This aligns with the PMBOK Guide Fourth Edition.The PMP Exam Success Series: Bootcamp Manual is the foundation of the PMP Exam Success Series (currently used in 43 countries). This is a must have for anyone preparing to take the PMP Exam. This book is complete with valuable exam preparation information, including "Crosswind Must Knows" for each exam topic, terms and definitions, formulas, exercises (matching, Earned Value and Network Diagram Analysis) and situational questions translation. It has a complete integrated test of 200 questions, like the real exam in the attached EXAM SIMULATION CD-ROM. As well as 30 questions with full explanation of the correct and incorrect answers for each topic area. It includes matching and Input/Tools & Techniques/Outputs (ITTO's) matching exercises to help reinforce PMI terminology and processes used on the exam. Included also are mind maps for every exam knowledge area. Also included in the CD-ROM are PDF files of exercises in the book to allow repeated use of the exercises.
Scaffolding student-generated questions: Design and development of a customizable online learning system
Authors: Fu-Yun Yu
Venue: Computers in Human Behavior (2009)

Despite the fact that the benefits of student question generation are well documented, most students do not take part in question generation exercises during their formal schooling and are not accustomed to authoring questions. Under the premise that student question generation activities should be better supported in a timely, flexible and logistically feasible fashion, a customizable online learning environment that accentuates various scaffolding techniques has been designed and developed. The framework guiding the development of the system, and its associated designs, are described. To assess the various built-in scaffolds used to support students' learning activities by means of question generation, a study was undertaken to that measured students' perceived usefulness of each mechanism, as well as the effects of the perceived usefulness of the scaffolds on students' attitudes toward question generation learning activities in general. The data collected indicated that, by utilizing computers and network technologies, the developed system provided a supportive learning environment for student's question generation learning activities. Support features not yet included in other similar systems (including access to generic question stems with sample questions, access to model questions, two-way cyclic communication between authors of question and assessors, and the ability to conceal one's real identity by anonymity or nickname, etc.), were confirmed to provide a high level of support. Recommendations for classroom implementations and future studies are offered.
A biologically inspired password authentication system
Authors: Dipankar Dasgupta, Sudip Saha
Venue: Proceedings of the 5th Annual Workshop on Cyber Security and Information Intelligence Research: Cyber Security and Information Intelligence Challenges and Strategies (2009)

Password authentication is very critical for secure access to computing systems/servers as it verifies the identity of users and processes. Most authentication systems use some form of Positive Authentication (PA) to identify legitimate users. Specifically, these systems use a password profile containing all of the user passwords that are authorized to access the system (or the server). The negative counterpart (non-self/anti-password space) represents strings that are not in the password file (which can possibly be exploited by hackers using password guessing or cracking tools). This paper describes a biologically-inspired authentication technique based on the negative (anti-password) concept. The goal is to keep the anti-password checking as the first line of authentication (invisible to users) and be kept in a separate machine (probably outside the secure perimeter), while the PA system should be inside the highly secure region.
The SLAM problem: a survey
Authors: Josep Aulinas, Yvan Petillot, Joaquim Salvi, Xavier Lladó
Venue: Proceeding of the 2008 conference on Artificial Intelligence Research and Development: Proceedings of the 11th International Conference of the Catalan Association for Artificial Intelligence (2008)

This paper surveys the most recent published techniques in the field of Simultaneous Localization and Mapping (SLAM). In particular it is focused on the existing techniques available to speed up the process, with the purpose to handel large scale scenarios. The main research field we plan to investigate is the filtering algorithms as a way of reducing the amount of data. It seems that almost all the current approaches can not perform consistent maps for large areas, mainly due to the increase of the computational cost and due to the uncertainties that become prohibitive when the scenario becomes larger.
SPATE: small-group PKI-less authenticated trust establishment
Authors: Yue-Hsun Lin, Ahren Studer, Hsu-Chin Hsiao, Jonathan M. McCune, King-Hang Wang, Maxwell Krohn, Phen-Lan Lin, Adrian Perrig, Hung-Min Sun, Bo-Yin Yang
Venue: Proceedings of the 7th international conference on Mobile systems, applications, and services (2009)

Establishing trust between a group of individuals remains a difficult problem. Prior works assume trusted infrastructure, require an individual to trust unknown entities, or provide relatively low probabilistic guarantees of authenticity (95% for realistic settings). This work presents SPATE, a primitive that allows users to establish trust via device mobility and physical interaction. Once the SPATE protocol runs to completion, its participants' mobile devices have authentic data that their applications can use to interact securely (i.e., the probability of a successful attack is 2-24). For this work, we leverage SPATE as part of a larger system to facilitate efficient, secure, and user-friendly collaboration via email and file-sharing services. Our implementation of SPATE on Nokia N70 smartphones allows users to establish trust in small groups of up to eight users in less than one minute. The two example SPATE applications provide increased security with no overhead noticeable to users once keys are established.
An O(n) algorithm for weighted least squares regression by integer quasi-convex and unimodal or umbrella functions
Authors: Ming-Hong Liu, Vasant A. Ubhaya
Venue: Computers Mathematics with Applications (2009)

The problem of fitting n data points by an integer quasi-convex (also quasi-concave, umbrella or unimodal) function using the weighted least squares distance function is considered. An algorithm of linear time (O(n)) worst-case complexity and thus optimal is constructed for computing a best fit. This problem arises in the context of curve fitting or statistical estimation.
Kernel Principal Component Analysis of Gabor Features for Palmprint Recognition
Authors: Murat Aykut, Murat Ekinci
Venue: Proceedings of the Third International Conference on Advances in Biometrics (2009)

This paper presents Gabor-based kernel Principal Component Analysis (KPCA) method by integrating the Gabor wavelet and the KPCA methods for palmprint recognition. The intensity values of the palmprint images extracted by using an image preprocessing method are first normalized. Then Gabor wavelets are applied to derive desirable palmprint features. The transformed palm images exhibit strong characteristics of spatial locality, scale, and orientation selectivity. The KPCA method nonlinearly maps the Gabor wavelet image into a high-dimensional feature space and the matching is realized by weighted Euclidean distance. The proposed algorithm has been successfully tested on the PolyU palmprint database which the samples were collected in two different sessions. Experimental results show that this method achieves 97.22% accuracy for PolyU dataset using 3850 images from 385 different palms captured in the first session as train set and the second session im0061ges as test set.