Paper Nr: |
44 |
Title: |
Anomaly Detection in eSport Games Through Periodical In-Game Movement Analysis with Deep Recurrent Neural Network |
Authors: |
Mhd Irvan, Franziska Zimmer, Ryosuke Kobayashi, Maharage Nisansala Sevwandi Perera, Roberta Tamponi and Rie Shigetomi Yamaguchi |
Abstract: |
Detecting anomaly in online video games is important to ensure a fair and secure gaming session. This is particularly crucial in eSport games, where competitive fairness is crucial. In this paper, we present an approach to anomaly detection in gaming sessions, using a variant of Deep Recurrent Neural Network, called Long Short-Term Memory (LSTM) network. Recurrent Neural Networks (RNNs) and their variant, LSTMs, are well-suited for this kind of task due to their ability to capture sequential patterns in gameplay data. The proposed system learns from normal gameplay patterns to identify anomalous behaviors such as impersonation. To confirm the feasibility of our approach, we use a game called Counter-Strike: Global Offensive (CSGO) serving as a case study. We utilize a public CSGO dataset containing in-game movement data, including coordinates, timestamps, and other contextual information. To test the model’s detection capabilities, synthetic data representing anomalous behaviors was injected into the dataset. The data was preprocessed and segmented into sequences, simulating the dynamics of player movements. Our LSTM model was trained to learn temporal dependencies within these sequences, enabling it to distinguish between normal and anomalous behaviors. Performance evaluation demonstrated the model’s robustness and effectiveness in detecting anomalies. The results indicate that our approach is able to detect anomalous activities, highlighting its potential for application in online gaming platforms to foster a more enjoyable gaming experience for all participants. |
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Paper Nr: |
59 |
Title: |
Temporal Complexity of a Hopfield-Type Neural Model in Random and Scale-Free Graphs |
Authors: |
Marco Cafiso and Paolo Paradisi |
Abstract: |
The Hopfield network model and its generalizations were introduced as a model of associative, or content-addressable, memory. They were widely investigated both as an unsupervised learning method in artificial intelligence and as a model of biological neural dynamics in computational neuroscience. The complexity features of biological neural networks have attracted the scientific community’s interest for the last two decades. More recently, concepts and tools borrowed from complex network theory were applied to artificial neural networks and learning, thus focusing on the topological aspects. However, the temporal structure is also a crucial property displayed by biological neural networks and investigated in the framework of systems displaying complex intermittency. The Intermittency-Driven Complexity (IDC) approach indeed focuses on the metastability of self-organized states, whose signature is a power-decay in the inter-event time distribution or a scaling behaviour in the related event-driven diffusion processes. The investigation of IDC in neural dynamics and its relationship with network topology is still in its early stages. In this work, we present the preliminary results of an IDC analysis carried out on a bio-inspired Hopfield-type neural network comparing two different connectivities, i.e., scale-free vs. random network topology. We found that random networks can trigger complexity features similar to that of scale-free networks, even if with some differences and for different parameter values, in particular for different noise levels. |
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Paper Nr: |
74 |
Title: |
META: Deep Learning Pipeline for Detecting Anomalies on Multimodal Vibration Sewage Treatment Plant Data |
Authors: |
Simeon Krastev, Aukkawut Ammartayakun, Kewal Jayshankar Mishra, Harika Koduri, Eric Schuman, Drew Morris, Yuan Feng, Sai Supreeth Reddy Bandi, Chun-Kit Ngan, Andrew Yeung, Jason Li, Nigel Ko, Fatemeh Emdad, Elke Rundensteiner, Heiton M. H. Ho, T. K. Wong and Jolly P. C. Chan |
Abstract: |
In this paper, we propose a hybrid anomaly detection pipeline, META, which integrates Multimodal-feature Extraction (ME) and a Transformer-based Autoencoder (TA) for predictive maintenance of sewage treatment plants. META uses a three-step approach: First, it employs a signal averaging method to remove noise and improve the quality of signals related to pump health. Second, it extracts key signal properties from three vibration directions (Axial, Radial X, Radial Y), fuses them, and performs dimensionality reduction to create a refined PCA feature set. Third, a Transformer-based Autoencoder (TA) learns pump behavior from the PCA features to detect anomalies with high precision. We validate META with an experimental case study at the Stonecutters Island Sewage Treatment Works in Hong Kong, showing it outperforms state-of-the-art methods in metrics like MCC and F1-score. Lastly, we develop a web-based Sewage Pump Monitoring System hosting the META pipeline with an interactive interface for future use. |
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Paper Nr: |
28 |
Title: |
FSL-LFMG: Few-Shot Learning with Augmented Latent Features and Multitasking Generation for Enhancing Multiclass Classification on Tabular Data |
Authors: |
Aviv A. Nur, Chun-Kit Ngan and Rolf Bardeli |
Abstract: |
In this work, we propose advancing ProtoNet that employs augmented latent features (LF) by an autoencoder and multitasking generation (MG) by STUNT in the few-shot learning (FSL) mechanism. Specifically, the achieved contributions to this work are threefold. First, we propose an FSL-LFMG framework to develop an end-to-end few-shot multiclass classification workflow on tabular data. This framework is composed of three main stages that include (i) data augmentation at the sample level utilizing autoencoders to generate augmented LF, (ii) data augmentation at the task level involving self-generating multitasks using the STUNT approach, and (iii) the learning process taking place on ProtoNet, followed by various model evaluations in our FSL mechanism. Second, due to the outlier and noise sensitivity of K-means clustering and the curse of dimensionality of Euclidean distance, we enhance and customize the STUNT approach by using K-medoids clustering that is less sensitive to noisy outliers and Manhattan distance that is the most preferable for high-dimensional data. Finally, we conduct an extensive experimental study on four diverse domain datasets—Net Promoter Score segmentation, Dry Bean type, Wine type, and Forest Cover type—to prove that our FSL-LFMG approach on the multiclass classification outperforms the Tree Ensemble models and the One-vs-the-rest classifiers by 7.8% in 1-shot and 2.5% in 5-shot learning. |
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Paper Nr: |
58 |
Title: |
AI-Based Preliminary Modeling for Failure Prediction of Reactor Protection System in Nuclear Power Plants |
Authors: |
Hye Seon Jo, Ho Jun Lee, Ji Hun Park and Man Gyun Na |
Abstract: |
Nuclear power plants (NPPs), which generate electricity through nuclear fission energy, are crucial for safe operation due to the potential risk of exposure to radioactive materials. NPPs contain a variety of safety systems, and this study aims to develop an artificial intelligence-based failure prediction model that can predict and prevent potential failures in advance by targeting the reactor protection system (RPS). Currently, failure data for RPS are being collected through a testbed, so we conducted preliminary modeling using open-source data due to insufficient data acquisition. The applied open-source data are the accelerated aging data of insulated gate bipolar transistors (IGBTs), and the remaining useful life of IGBT was predicted using long short-term memory and Monte Carlo dropout technology. Also, physical rules were applied to improve their prediction performance and their applicability was confirmed through performance evaluation. Through performance evaluation of the developed prediction models, we explored the optimal model and confirmed the applicability of the applied methodologies and technologies. |
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Paper Nr: |
82 |
Title: |
Leveraging Deep Learning for Approaching Automated Pre-Clinical Rodent Models |
Authors: |
Carl Sandelius, Athanasios Pappas, Arezoo Sarkheyli-Hägele, Andreas Heuer and Magnus Johnsson |
Abstract: |
We evaluate deep learning architectures for rat pose estimation using a six-camera system, focusing on ResNet and EfficientNet across various depths and augmentation techniques. Among the configurations tested, ResNet 152 with default augmentation provided the best performance when employing a multi-perspective network approach in the controlled experimental setup. It reached a Root Mean Squared Error (RMSE) of 8.74, 8.78, and 9.72 pixels for the different angles. The utilization of data augmentation revealed that less altering yields better performance. We propose potential areas for future research, including further refinement of model configurations, more in-depth investigation of inference speeds, and the possibility of transferring network weights to study other species, such as mice. The findings underscore the potential for deep learning solutions to advance preclinical research in behavioral neuroscience. We suggest building on this research to introduce behavioral recognition based on a 3D movement reconstruction, particularly emphasizing the motoric aspects of neurodegenerative diseases. This will allow for the correlation of observable behaviors with neuronal activity, contributing to a better understanding of the brain and aiding in developing new therapeutic strategies. |
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Paper Nr: |
85 |
Title: |
End-to-End Steering for Autonomous Vehicles via Conditional Imitation Co-Learning |
Authors: |
Mahmoud M. Kishky, Hesham M. Eraqi and Khaled M. F. Elsayed |
Abstract: |
Autonomous driving involves complex tasks such as data fusion, object and lane detection, behavior prediction, and path planning. As opposed to the modular approach which dedicates individual subsystems to tackle each of those tasks, the end-to-end approach treats the problem as a single learnable task using deep neural networks, reducing system complexity and minimizing dependency on heuristics. Conditional imitation learning (CIL) trains the end-to-end model to mimic a human expert considering the navigational commands guiding the vehicle to reach its destination, CIL adopts specialist network branches dedicated to learn the driving task for each navigational command. Nevertheless, the CIL model lacked generalization when deployed to unseen environments. This work introduces the conditional imitation co-learning (CIC) approach to address this issue by enabling the model to learn the relationships between CIL specialist branches via a co-learning matrix generated by gated hyperbolic tangent units (GTUs). Additionally, we propose posing the steering regression problem as classification, we use a classification-regression hybrid loss to bridge the gap between regression and classification, we also propose using co-existence probability to consider the spatial tendency between the steering classes. Our model is demonstrated to improve autonomous driving success rate in unseen environment by 62% on average compared to the CIL method. |
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