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Sentiment Analysis of Local Tourism in Thailand from YouTube Comments Using BiLSTM 1

15th Multi-disciplinary International Conference on Artificial Intelligence, MIWAI 2022

作者： Khruahong, Sanya Surinta, Olarik Lam, Sinh Cong Department of Computer Science and Information Technology Faculty of Science Naresuan University Phitsanulok Thailand Faculty of Informatics Mahasarakham University Mahasarakham Thailand Faculty of Electronics and Telecommunication VNU - University of Engineering and Technology Hanoi Viet Nam

ISBN: (数字)9783031209925

ISBN: (纸本)9783031209918

Currently, social networks, where people can express their opinion through content and comments, are fast developing and affect various areas of daily life;Particularly, some research on YouTube travel channels found that almost tourists and audiences leave comments about their attitudes to that place. Thus, mining the emotional recognition of comments through artificial intelligence can bring knowledge about the tourists’ general view. This article analyzes the relationship(s) between social media use and its effect on community-based tourism in Thailand using the Social Media Sensing framework (S-Sense) as sentiment analysis and the Bidirectional Long Short-Term Memory (BiLSTM) methods to analyze the text comments. This research collected 51,280 comments on 114 Youtube Videos, which are tourist attractions in various provinces in Thailand. The approach categorizes attractions based on sentiment analysis of 60% or more, including restaurants, markets, historical sites, temples, or natural attractions. The results show that 67.51% of the 19,391 clean-processed comments were satisfied with those attraction places. Therefore S-Sense and BiLSTM models can be sufficient to analyze the attitude of comments about attraction places with from 43 to remain 33 keywords of 1,603 comments. Furthermore, the offered sentiment analysis method has higher precision, recall, and F1 scores. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Sentiment analysis

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Analysis of Banking and Financial Sector Services Using Artificial Intelligence (AI) 1

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8th International Conference on Information System Design and Intelligent Applications, ISDIA 2024

作者： Isavnin, Alexey Kosorukova, Irina Madaminov, Inomjon Laxmi Lydia, E. Satapathy, Suresh Department of Business-Informatics and Mathematical Methods in Economics Naberezhnye Chelny Institute KFU Kazan Federal University Naberezhnye Chelny Russia Department of Corporate Finance and Corporate Governance Financial University under the Government of the Russian Federation Moscow Russia Department of Accounting and Auditing Urgench State University Urgench Uzbekistan Department of Computer Science and Engineering Vignan’s Institute of Information Technology Visakhapatnam530049 India School of Computer Engineering KIIT Deemed to be University Bhubaneswar India

ISBN: (数字)9789819748921

ISBN: (纸本)9789819748914

This research proposes the assessment of banking and financial services using AI to monitor how banks apply AI approaches and the feedback they receive from customers. In order to better track, anticipate, and react to customer behavior, the financial information generated by the growing utilization of digital pay and banking can be mined by banks and other financial institutions. Based on research, secondary sources are reviewed to ascertain the data used in banking and financial services. A methodical survey is designed to gather the main information clients have regarding AI applications. The study is that private banks and other financial institutions use a variety of artificial intelligence (AI) services to better serve their clients and ensure that they are happy with their financial services, as some clients are not happy with banking services. Additionally, the results indicated that clients would be more committed to banking and financial services representatives by providing creative preparation for the advancement of AI practices in the workplace. © The Author(s).

关键词： Decentralized finance

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Wideband Circularly Polarized Reflectionless Filtenna

Wideband Circularly Polarized Reflectionless Filtenna

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European Conference on Antennas and Propagation, EuCAP

作者： Adnan Nadeem Nosherwan Shoaib Dimitra Psychogiou Photos Vryonides Symeon Nikolaou Department of Electrical Engineering Frederick University Nicosia Cyprus School of Electrical Engineering and Computer Science (SEECS) National University of Sciences and Technology (NUST) Islamabad Pakistan School of Engineering University College Cork Cork Ireland Tyndall National Institute Cork Cork Ireland Frederick Research Center Nicosia Cyprus

ISBN: (数字)9788831299107

ISBN: (纸本)9798350366327

The manuscript presents the implementation of a reflectionless wideband filtenna, with circular polarization and high gain characteristics from 1 to 2.5 GHz. The antenna front-end interface comprises: i) a reflectionless filter which consists of a two-stage λg/4 coupled line (defined at the mid-band frequency, fo= 1.75 GHz) and a stepped impedance open-circuited stub and ii) a balun that is used to feed a self-complementary log spiral antenna. The balun consists of two sections: a microstrip line on the input side and a parallel stripline on the output side, connected to the antenna feed point. The transition between the two sections is achieved using a Chebyshev tapering geometry. For the implementation of the wideband antenna, a cavity-backed logarithmic spiral antenna with non-uniform widths was used. The proposed front-end filtenna system exhibits an axial ratio less than 3 dB in the entire 1-2.5 GHz band and a gain that varies between 5 and 9 dBi.

关键词： Polarization Microstrip filters Spirals Baluns Microstrip antennas Antenna feeds Reflector antennas Impedance Wideband Gain

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Zero-Shot Sentiment Analysis Exploring BART Models

Zero-Shot Sentiment Analysis Exploring BART Models

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Big Data, Cloud Computing, Data Science & engineering (BCD)

作者： Konstantinos Kyritsis Isidoros Perikos Michael Paraskevas Electrical and Computer Engineering Dept. Computer Technology Institute and Press "Diophantus" University of Peloponnese Patras Greece Computer Engineering and Informatics Department University of Patras Patras Greece

The BART model is an advanced adaptation of transformers introduced by Facebook. It has incorporated elements from both BERT and GPT transformers, enabling significant advancements in language understanding and general speech processing. Utilizing both encoder and decoder components, BART proves versatile for various tasks, including translation, text completion, automatic sentence generation, entity recognition, sentiment analysis, and more. In this study, we focus on the study of pretrained models, BART and a modified version called distilbart, in the context of Zero-Shot Text Classification. In the experimental study we dive into the Zero-Shot technique applied to various pretrained Transformers. Our analysis demonstrates that, depending on the Model we utilize, we can achieve F1 scores of up to 88%, showcasing the model's effectiveness in discerning classes for this Sentiment Analysis problem using the Zero-Shot Text Classification technique.

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Fluid-Driven Pattern Reconfigurable Antenna With Cavity-Backed Slot

Fluid-Driven Pattern Reconfigurable Antenna With Cavity-Back...

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Microwaves Antennas and Propagation Conference (MAPCON)

作者： Muhammad U. Khan Awab Muhammad Adnan Nadeem Ravi Kumar Arya Prashant Chaudhary Raj Mittra School of Electrical Engineering and Computer Science (SEECS) National University of Sciences and Technology (NUST) Islamabad Pakistan Department of Electrical Engineering Frederick University Cyprus Xiangshan Laboratory Zhongshan Institute of Changchun University of Science and Technology China Department of Electrical and Computer Engineering University of Central Florida FL USA

ISBN: (数字)9798350379693

ISBN: (纸本)9798350379709

This work introduces a novel cavity-backed slot antenna design operating at 10 GHz, employing a shorted monopole as the feed mechanism. The cavity structure is realized by integrating PLA (Polylactic Acid) posts filled with liquid mercury, enabling dynamic beam steering capabilities. By selectively emptying sets of eleven consecutive PLA posts, the antenna achieves 360 -degree scan coverage without any degradation in scanning efficiency. Furthermore, to enhance the antenna’s directivity, cone structures are integrated at the upper and lower extremities of the cavity. Simulation results demonstrate that the proposed antenna achieves complete 360degree azimuth coverage with a directivity of 12 dBi. The proposed design is realizable and can be employed in various applications where beam steering is required such as communication and radar.

关键词： Microwave antennas Beam steering Slot antennas Liquids Azimuth Simulation Microwave communication Radar antennas Radar applications Microwave propagation

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Femtosecond Laser Inscribed Optical Fiber Components Applied to Lasers and Sensors

Femtosecond Laser Inscribed Optical Fiber Components Applied...

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Specialty Optical Fibers, SOF 2020

作者： Kalli, Kyriacos Photonics and Optical Sensors Research Laboratory Department of Electrical Engineering Computer Engineering and Informatics Cyprus University of Technology Limassol Cyprus

Femtosecond lasers are used to flexibly modify optical fibers, realizing waveguides and grating components in different fiber types, using the same key fs-laser inscription parameters via a plane-by-plane method, demo... 详细信息

ISBN: (纸本)9781943580798

关键词： Femtosecond lasers

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TransAxx: Efficient Transformers with Approximate Computing

arXiv

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arXiv 2024年

作者： Danopoulos, Dimitrios Zervakis, Georgios Soudris, Dimitrios Henkel, Jörg School of Electrical and Computer Engineering National Technical University of Athens Athens15780 Greece Department of Computer Engineering & Informatics University of Patras Patras Greece Karlsruhe Institute of Technology Karlsruhe76131 Germany

Vision Transformer (ViT) models which were recently introduced by the transformer architecture have shown to be very competitive and often become a popular alternative to Convolutional Neural Networks (CNNs). However, the high computational requirements of these models limit their practical applicability especially on low-power devices. Current state-of-the-art employs approximate multipliers to address the highly increased compute demands of DNN accelerators but no prior research has explored their use on ViT models. In this work we propose TransAxx, a framework based on the popular PyTorch library that enables fast inherent support for approximate arithmetic to seamlessly evaluate the impact of approximate computing on DNNs such as ViT models. Using TransAxx we analyze the sensitivity of transformer models on the ImageNet dataset to approximate multiplications and perform approximate-aware finetuning to regain accuracy. Furthermore, we propose a methodology to generate approximate accelerators for ViT models. Our approach uses a Monte Carlo Tree Search (MCTS) algorithm to efficiently search the space of possible configurations using a hardware-driven hand-crafted policy. Our evaluation demonstrates the efficacy of our methodology in achieving significant trade-offs between accuracy and power, resulting in substantial gains without compromising on performance. Copyright © 2024, The Authors. All rights reserved.

关键词： Acceleration

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Exploring Network Dynamics: Community Detection and Influencer Analysis in Multidimensional Social Networks

Exploring Network Dynamics: Community Detection and Influenc...

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IEEE International Conference on Big Data

作者： Andreas Kanavos Gerasimos Vonitsanos Ioannis Karamitsos Khalil Al-Hussaeni Department of Informatics Ionian University Corfu Greece Computer Engineering and Informatics Department University of Patras Patras Greece Rochester Institution of Technology Dubai UAE Computing Sciences Department Rochester Institute of Technology Dubai UAE

ISBN: (数字)9798350362480

ISBN: (纸本)9798350362497

In the digital era, multidimensional social networks have become integral to daily communication, catering to diverse relational needs, from interpersonal to professional and commercial. This study utilizes two comprehensive datasets from Twitter to explore and visualize user interactions within these networks. Focusing on advanced community detection algorithms, we apply the Louvain and Label Propagation methods to delineate the structure of these communities and identify influential users effectively. Through systematic analysis, our research reveals significant insights into the dynamics of network clusters and the pivotal role of influencers. We demonstrate that community structures significantly influence in formation dissemination and user engagement, providing key data to optimize digital communication strategies in complex environments. The findings underscore the importance of strategic influencer engagement and tailored community management in enhancing interaction within multidimensional social networks. Additionally, our results suggest that understanding the network’s structural nuances can aid in developing targeted interventions that leverage influencer capabilities to maximize communication impact, illustrating potential applications across various sectors, including marketing, politics, and public health.

关键词： Systematics Social networking (online) Heuristic algorithms Blogs Focusing Media Big Data Digital communication Public healthcare Detection algorithms

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Small signal transfer functions and mathematical model of the boost power converter 12

Small signal transfer functions and mathematical model of th...

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12th Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion, MEDPOWER 2020

作者： Ioannou, Stelios Argyrou, Maria C. Christodoulides, Paul Marouchos, Christos C. Electrical and Electronic Engineering School of Sciences University of Central Lancashire Larnaca Pyla Cyprus Electrical Engineering Computer Engineering and Informatics Cyprus University of Technology Limassol Cyprus

ISBN: (纸本)9781839535635

In this paper the switching function is employed to derive both the small signal transfer functions and the large signal mathematical model of the boost converter. In both cases the switching function technique is employed. In deriving the large signal mathematical model, both the switching frequency and its first harmonic are included. In this way the output of the large signal gives the important harmonic content of the output voltage and inductor current. For the small signal transfer functions the average model is derived but work is underway to include the switching frequency as well. PSIM/Simulink simulations are employed to verify the both the mathematical model and the small signal transfer functions. © 2020 Institution of engineering and technology. All rights reserved.

关键词： DC-DC converters

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Using NOMA Scheme for the Management of Interference and the Improvement of Performance in 5G Networks 13

Using NOMA Scheme for the Management of Interference and the...

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13th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, ICUMT 2021

作者： Bouras, Christos Kokkinos, Vasileios Tzioumanis, Georgios University of Patras Computer Technology Institute and Press Diophantus' Computer Engineering and Informatics Dept. Patras Greece

ISBN: (纸本)9781665402194

The new generation of 5G networks, compared to 4G networks, is a very important example of change in achieving very high frequencies in the carrier with huge bandwidth, high densities with a huge number of antennas and improved quality of services, making effective interference management necessary. In this paper, we present the contribution of the Non-Orthogonal Multiple Access (NOMA) scheme to improving the performance of 5G networks. We refer to the technique of sequential interference cancellation applied to some NOMA formats, compare NOMA and Orthogonal Multiple Access (OMA) formats in terms of the capabilities they offer users and NOMA's significant contribution to Multiple-Input Multiple-Output (MIMO) technology and compare three basic NOMA formats in three different resource and user reporting scenarios. Finally, we present the results of the simulations of the above comparisons and analyze the contribution of each scheme to the improvement of the system performance. and copy;2021 IEEE. © 2021 IEEE computer Society. All rights reserved.

关键词： 5G mobile communication systems

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