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11th Annual Meeting of the Special Interest Group on Discourse and Dialogue, SIGDIAL 2010

作者： López-Cózar, Ramón Jan, Silovsky Griol, David Dept. of Languages and Computer Systems CTIC-UGR University of Granada Spain Institute of Information Technology and Electronics Technical University of Liberec Czech Republic Dept. of Computer Science Carlos III University of Madrid Spain

ISBN: (纸本)9781932432855

In this paper we propose a new technique to enhance emotion recognition by combining in different ways what we call emotion predictions. The technique is called F2 as the combination is based on a double fusion process. The input to the first fusion phase is the output of a number of classifiers which deal with different types of information regarding each sentence uttered by the user. The output of this process is the input to the second fusion stage, which provides as output the most likely emotional category. Experiments have been carried out using a previously-developed spoken dialogue system designed for the fast food domain. Results obtained considering three and two emotional categories show that our technique outperforms the standard single fusion technique by 2.25% and 3.35% absolute, respectively. © 2010 Association for Computational Linguistics.

关键词： Emotion Recognition

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The deletion operation in xBR-trees

The deletion operation in xBR-trees

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2012 16th Panhellenic Conference on Informatics, PCI 2012

作者： Roumelis, George Vassilakopoulos, Michael Corral, Antonio Information Processing and Management Lab. Dept. of Computer Science and Biomedical Informatics University of Central Greece Lamia Greece Dept. of Languages and Computing University of Almeria Almeria Spain

ISBN: (纸本)9780769548258

In order to design a spatial index, the most important operations are: insertion, deletion and search. We focus on the deletion operation over the xBR-tree, a spatial data secondary memory structure that belongs to the Quad tree family. The algorithm of handling deletions is presented, taking into account that the deletion of a leaf item may cause entries deletions from internal nodes. The well-known merging technique is applied, to retain the efficiency of the xBR-tree. © 2012 IEEE.

关键词： Trees (mathematics)

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Photo rendering with swarms: From figurative to abstract pherogenic imaging

Photo rendering with swarms: From figurative to abstract phe...

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2013 IEEE Symposium on Computational Intelligence for Creativity and Affective Computing, CICAC 2013 - 2013 IEEE Symposium Series on Computational Intelligence, SSCI 2013

作者： Fernandes, Carlos M. Mora, Antonio Merelo, Juan Julian Cotta, Carlos Rosa, Agostinho C. Dep. of Computer Architecture and Technology University of Granada Spain Systems and Robotics Institute Technical University of Lisbon Portugal Dept. of Computer Languages and Computer Science University of Malaga Spain

ISBN: (纸本)9781467360104

This paper describes the use of ant colony models for photographic rendering, that is, for the depiction or interpretation of photographic images. A description of a previously proposed ant-based edge detection method called pherographia is given in order to contextualize this paper's proposal. Then, the application of the KANTS algorithm to photo-rendering is introduced. KANTS is ant-based clustering algorithm described by a set of equations that model the local behavior of simple units (ants). These units represent data samples. When moving on a heterogeneous 2-dimensional lattice of vectors, global behavior emerges from the local interaction between the ants, which self-organize into clusters. In this paper, a data set consists of the RGB values of a digital (or digitalized) photograph. Two different approaches for the initialization of the environment are tested, each one resulting in radically different output images: when the environment is initialized with the RGB values of the same image that is used to generate the data set, the final result is very similar to the original photo;a random initialization of the environment leads to an abstract interpretation of the photo. The results are contextualized within previous swarm artworks by the authors. © 2013 IEEE.

关键词： Ant colony optimization

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Integration of weighted majority voting in machine learning algorithms to enhance pine tree crown mapping on UAV imagery

Integration of weighted majority voting in machine learning ...

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2024 Symposium on Beyond the Canopy: Technologies and Applications of Remote Sensing

作者： Hosingholizade, Ali Erfanifard, Yousef Alavipanah, Seyed Kazem Pirasteh, Saied Garcia Millan, Virginia Dept. of Remote Sensing and GIS Faculty of Geography University of Tehran Tehran Iran Institute of Artificial Intelligence School of Mechanical and Electrical Engineering Shaoxing University China Department of Geotechnics and Geomatics Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai602105 India Dept. of Computer Science and Programming Languages School of Computer Science and Enginering University of Málaga Málaga Spain

The shape and area of the crown of each tree are among the most influential parameters for identifying and controlling the processes of photosynthesis, respiration, transpiration and its management. In such a way that various physiographic functions, such as carbon dioxide absorption, light energy absorption, oxygen release and transpiration, which are vital for the growth and development of the tree, are done in the crown. In this research, the RGB image of the UAV with a spatial resolution of 2 cm was resampled to three pixel sizes of 10, 30 and 50 cm. Then, each image was classified separately by SVM, ANN and MLC algorithms, which are all part of Ensemble. In the next step, each of the obtained crowns was compared with the digitization of the same crown, and based on the area of the crown obtained from each classification and normalization method, the weight was obtained specifically for the same crown. Finally, by using the weighted majority voting method, classifications were fusioned at the decision level. The results showed that the ANN method gives better results in all pixel sizes compared to MLC and SVM. Also, the combination of different classification methods with the weighted majority voting method based on the weight assigned to the same crown based on each classification method has significantly increased the classification accuracy of the tree crown in all the sizes of the analyzed pixels. © Author(s) 2024.

关键词： Pixels

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An agent-based model on scale-free networks for personal finance decisions 20

An agent-based model on scale-free networks for personal fin...

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20th Workshop "From Objects to Agents", WOA 2019

作者： Mastroeni, Loretta Naldi, Maurizio Vellucci, Pierluigi Dept. of Economics Roma Tre University Rome Italy Dept. of Civil Engineering and Computer Science University of Rome Tor Vergata Dept. of Law Economics Politics and Modern languages LUMSA University Rome Italy

Personal finance decisions emerge from a complex network of human connections, where the nodes or agents — banks, investors, financial advisors — take their choices on the basis of a variety of factors. All these agents form a society, which we modeled as an Agent-Based Model (ABM) on a scale-free network. In this paper, we will consider: honest agents, regular agents, insincere agents, stubborn agents and skilled (or unskilled) agents. Honest agents report truthfully their opinion while insincere agents state an opinion which is different from their internal belief. Regular agents are characterized by the same propensity to listen, contrary to what stubborn agents do because these agents evaluate the counterpart’s opinion but never approaches to it. Skilled and unskilled agents are the result of influence of the competence in the evolution of decisions in multi-agent systems. We perform a social simulation to show that, in particular, consensus, polarization, extremism or the emergence of a disordered regime are possible outcomes, even without explicit introduction of stubborn agents. © 2019 CEUR-WS. All rights reserved.

关键词： Complex networks

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The Interpretation of Temporal Relations in Narrative 7

The Interpretation of Temporal Relations in Narrative

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7th National Conference on Artificial Intelligence, AAAI 1988

作者： Song, Fei Cohen, Robin Logic Programming and Artificial Intelligence Group Dept. of Computer Science Univ. of Waterloo WaterlooONN2L 3G1 Canada

ISBN: (纸本)0262510553

This paper describes an algorithm for the interpretation of temporal relations between events mentioned in narrative (such as which event occurs before another). These relations are decided through three different levels of linguistic concepts: aspectual information for verbs, time relations for tenses, and time relations between clauses and/or sentences. One contribution of this paper is to present a more rigorous description for time relations of tenses, which is able to express all the 16 tenses in English and incorporate the interval properties of events from the aspectual analysis into the tense relations. For interpreting time relations between clauses, we emphasize the use of anaphoric references to events and introduce the concept of a situational description for an event (including the participants, place, time duration, etc.), used to make the interpreting algorithm deterministic, i.e. the set of interpreting rules are applied in a fixed order rather than in parallel. Last, we suggest a tree-like structure for the representation of temporal relations between events, which allows us to include vaguely specified relations (which may be clarified later), to facilitate the interpretation of subsequent temporal relations. Copyright © 1988, AAAI (***). All rights reserved.

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Buoy-to-ship experimental measurements over sea at 5.8 GHz near urban environments

Buoy-to-ship experimental measurements over sea at 5.8 GHz n...

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2011 11th Mediterranean Microwave Symposium, MMS 2011

作者： Reyes-Guerrero, J.C. Bruno, M. Mariscal, Luis A. Medouri, Abdellatif Dept. of Computer Languages and Systems Nautical Science Faculty University of Cadiz Puerto Real Spain Dept. of Statistics and Informatics Polydisciplinary Faculty University of Abdelmalek Essaâdi Tetuan Morocco

ISBN: (纸本)9781457718151

Current marine wireless communication systems used for monitoring applications based on buoys suffer from lots of weakness. Many research works concern the design and development of new technological applications to improve marine communications. Particularly, a wireless communication system based on WiMAX standard at the 5.8 GHz band (license-exempt band) could be a good candidate. As an initial task, a propagation channel measurement campaign in maritime environments was carried out to investigate the impact of the wireless channel in different situations. This work provides large scale path loss measurements over sea around urban environments. In particular, a radio link between a buoy and a ship at 5.8 GHz is studied. NLOS (Non-Line-Of-Sight) paths are investigated in dept. and they are compared to LOS (Line-Of-Sight) paths. The designed measurement system is described and the experimental measurements are shown. An empirical model is obtained using these experimental data and the key wireless channel parameters are analyzed. In addition, the empirical model is compared to the free space and two-ray theoretical models. This investigation is useful, among others, for planning Worldwide Interoperability for Microwave Access (WiMAX) networks offshore around these challenge environments. © 2011 IEEE.

关键词： Wimax

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The global engineering college: Lessons learned in exploring a new model for international engineering education

The global engineering college: Lessons learned in exploring...

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ASEE 2004 Annual Conference and Exposition, "Engineering Researchs New Heights"

作者： Doerry, Eckehard Doerry, Karl Bero, Bridget Dept. of Computer Science Northern Arizona University Flagstaff AZ 86011 Dept. of Modern Languages Northern Arizona University Flagstaff AZ 86011 Dept. of Civil Engineering Northern Arizona University Flagstaff AZ 86011

The increasing globalization of corporate economies has changed the face of engineering practice. In addition to core engineering skills, modern engineers must possess cross-cultural communication skills, team management skills, and the ability to perform on geographically-distributed teams. In a 2003 ASEE paper5, we described a novel curricular paradigm called the Global Engineering College (GEC), based on the idea of seamlessly combining the curricula and educational opportunities of several internationally-distributed engineering institutions to create a virtual engineering college spanning multiple countries and cultures. In this paper, we report on our experiences piloting the key elements of this model under an NSF planning grant, focusing on the obstacles encountered, and solutions developed to address them.

关键词： Engineering education

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Supporting usage-centered workflow Design: Why and how?

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2004年 3080卷 227-243页

作者： Kleiner, Niko Dept. of Programming Methodology Faculty of Computer Science University of Ulm D-89069 Germany

One of the most difficult tasks in the development of Processaware Information Systems (p-IS) is the design of the related workflow. Methods and tools to support this design process are an emerging trend in Business Process Management research. Despite the many approaches already presented it is unclear on what researchers should focus. Hence, in this paper, I first undertake a sound problem analysis of the workflow design process. With respect to this analysis, workflow design should primarily be informed of the study of the 'where' and 'why' of deviations of the work practice - which emerges with the deployment and use of the new p-IS - and the initially intended business process. Secondly, I describe log-based Delta-Analysis, a new concept to study process deviations using data logged during operational p-IS-usage. InterPoL, a tool to support log-based Delta-Analysis, is also presented. Finally, I report about results of a feasibility as well as a detailed case study with real-world projects. © Springer-Verlag 2004.

关键词： Enterprise resource management

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Influence of lexical tones on intonation in Kammu

Influence of lexical tones on intonation in Kammu

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作者： Karlsson, Anastasia House, David Svantesson, Jan-Olof Tayanin, Damrong Dept. of Linguistics and Phonetics Centre for Languages and Literature Lund University Sweden Dept. of Speech Music and Hearing School of Computer Science and Communication KTH Stockholm Sweden

The aim of this study is to investigate how the presence of lexical tones influences the realization of focal accent and sentence intonation. The language studied is Kammu, a language particularly well suited for the study as it has both tonal and non-tonal dialects. The main finding is that lexical tone exerts an influence on both sentence and focal accent in the tonal dialect to such a strong degree that we can postulate a hierarchy where lexical tone is strongest followed by sentence accent, with focal accent exerting the weakest influence on the F0 contour. © 2010 ISCA.

关键词： Speech communication

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