SVM

Аналіз тональності україномовних звернень громадян: класичні методи та трансформерні архітектури

У статті представлено розширене експериментальне порівняння ефективності методів машинного навчання для задачі трьохкласової класифікації тональності (negative, positive, neutral). Дослідження фокусується на специфічному домені україномовних текстових звернень громадян до органів міського управління, що є актуальною та практично значущою задачею для розвитку сучасних систем електронного урядування (e-Governance) та підтримки прийняття рішень.

An Adaptive Framework for Real-Time Intrusion Detection in WSNs and IoMT: Comparative Study using CICDDoS-2019, WSN-DS and CICIoMT2024 Datasets

Despite the high amount of research on networks and systems security, that comes out every day, the field of intrusion detection still attracts the interest of many researchers as one of the most important axes that contribute to understand the attacks behavior for providing an efficient and accurate solution with low cost.  Wireless sensor network and Internet of Things are one of the special networks that have several constraints, limited computational resources, and the most vulnerable for attacks, especially, DoS and DDoS attacks, which considered as the most danger

Geospatial and Wavelet-Based Feature Fusion for Advanced RUL Forecasting in Agricultural Machinery

This study extends previous research on Remaining Useful Life (RUL) prediction for agricultural vehicles by utilizing an enriched dataset to overcome earlier limitations in forecasting RUL for electric and hydraulic system components. Influential features have been identified through Pearson correlation and Random Forest feature importance analysis. Discrete Wavelet Transform (DWT) has been applied to extract additional approximation and detail coefficients, enhancing the feature set.

Enhancing flood forecasting accuracy through improved SVM and ANFIS techniques

Extreme rainfall in upstream watersheds often results in the rise of river water levels, leading to severe flood disasters in the downstream catchment.  Therefore, monitoring river water levels and flow is crucial for flood forecasting in early warning systems and disaster risk reduction.

Towards a polynomial approximation of support vector machine accuracy applied to Arabic tweet sentiment analysis

Machine learning algorithms have become very frequently used in natural language processing, notably sentiment analysis, which helps determine the general feeling carried within a text.  Among these algorithms, Support Vector Machines have proven powerful classifiers especially in such a task, when their performance is assessed through accuracy score and f1-score.  However, they remain slow in terms of training, thus making exhaustive grid-search experimentations very time-consuming.  In this paper, we present an observed pattern in SVM's accuracy, and f1-score approximated with a Lagrange