Kairouan
Deep Learning in Dental Image Analysis: A Systematic Review of Datasets, Methodologies, and Emerging Challenges
Zhou, Zhenhuan, Zhu, Jingbo, Zhang, Yuchen, Guan, Xiaohang, Wang, Peng, Li, Tao
Efficient analysis and processing of dental images are crucial for dentists to achieve accurate diagnosis and optimal treatment planning. However, dental imaging inherently poses several challenges, such as low contrast, metallic artifacts, and variations in projection angles. Combined with the subjectivity arising from differences in clinicians' expertise, manual interpretation often proves time-consuming and prone to inconsistency. Artificial intelligence (AI)-based automated dental image analysis (DIA) offers a promising solution to these issues and has become an integral part of computer-aided dental diagnosis and treatment. Among various AI technologies, deep learning (DL) stands out as the most widely applied and influential approach due to its superior feature extraction and representation capabilities. To comprehensively summarize recent progress in this field, we focus on the two fundamental aspects of DL research-datasets and models. In this paper, we systematically review 260 studies on DL applications in DIA, including 49 papers on publicly available dental datasets and 211 papers on DL-based algorithms. We first introduce the basic concepts of dental imaging and summarize the characteristics and acquisition methods of existing datasets. Then, we present the foundational techniques of DL and categorize relevant models and algorithms according to different DIA tasks, analyzing their network architectures, optimization strategies, training methods, and performance. Furthermore, we summarize commonly used training and evaluation metrics in the DIA domain. Finally, we discuss the current challenges of existing research and outline potential future directions. We hope that this work provides a valuable and systematic reference for researchers in this field. All supplementary materials and detailed comparison tables will be made publicly available on GitHub.
- Asia > China > Tianjin Province > Tianjin (0.04)
- Asia > Middle East > Iran (0.04)
- Asia > China > Zhejiang Province > Hangzhou (0.04)
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- Overview (1.00)
- Research Report > Promising Solution (0.34)
Agentic AI Frameworks: Architectures, Protocols, and Design Challenges
Derouiche, Hana, Brahmi, Zaki, Mazeni, Haithem
Aspect Traditional AI agents Modern agentic AI systems (LLM-based agents) Definition Autonomous entities with fixed sensing/acting loops; limited by static rules or models Autonomous reasoning systems using LLMs with dynamic behavior, tool orchestration, and context-awarenessAutonomy Limited autonomy; often dependent on human input or predefined instructions High autonomy; capable of independently performing complex and extended tasks Goal Management Focused on single, static goals or fixed task planning Capable of managing multiple, evolving, and nested goals adaptivelyArchitecture Rule-based or BDI (Belief-Desire-Intention) models; monolithic design Modular architecture centered on LLMs, with components for memory, tools, context injection, and rolesAdaptability Suited to controlled, predictable environments; poor generalization Designed for open, dynamic, and unpredictable environmentsDecision-Making Deterministic or rule-based logic; symbolic reasoning Context-sensitive, probabilistic reasoning with adaptive planning and self-reflection Learning Mechanism Rule-based or supervised learning with limited updates Self-supervised and reinforcement learning; continual fine-tuning possible Context Handling Static or manually coded states and rules Dynamic context injection via agent protocols (e.g., MCP, A2A) and runtime awareness Communication Message-passing via ACL or KQML Real-time, event-driven collaboration; natural language interfacesTool Use Limited or predefined tools and actions Dynamic tool invocation, chaining, and API calling based on contextMemory Optional, often hardcoded or task-specific Integrated memory systems supporting long-and short-term information retention
- Africa > Middle East > Tunisia > Tunis Governorate > Tunis (0.04)
- Africa > Middle East > Tunisia > Sousse Governorate > Sousse (0.04)
- Africa > Middle East > Tunisia > Manouba Governorate > Manouba (0.04)
- Africa > Middle East > Tunisia > Kairouan Governorate > Kairouan (0.04)
- Overview (1.00)
- Research Report (0.82)
- Information Technology (0.70)
- Health & Medicine (0.47)
Leveraging Novel Ensemble Learning Techniques and Landsat Multispectral Data for Estimating Olive Yields in Tunisia
Kefi, Mohamed, Pham, Tien Dat, Nguyen, Thin, Tjoelker, Mark G., Devasirvatham, Viola, Kashiwagi, Kenichi
Olive production is an important tree crop in Mediterranean climates. However, olive yield varies significantly due to climate change. Accurately estimating yield using remote sensing and machine learning remains a complex challenge. In this study, we developed a streamlined pipeline for olive yield estimation in the Kairouan and Sousse governorates of Tunisia. We extracted features from multispectral reflectance bands, vegetation indices derived from Landsat-8 OLI and Landsat-9 OLI-2 satellite imagery, along with digital elevation model data. These spatial features were combined with ground-based field survey data to form a structured tabular dataset. We then developed an automated ensemble learning framework, implemented using AutoGluon to train and evaluate multiple machine learning models, select optimal combinations through stacking, and generate robust yield predictions using five-fold cross-validation. The results demonstrate strong predictive performance from both sensors, with Landsat-8 OLI achieving R2 = 0.8635 and RMSE = 1.17 tons per ha, and Landsat-9 OLI-2 achieving R2 = 0.8378 and RMSE = 1.32 tons per ha. This study highlights a scalable, cost-effective, and accurate method for olive yield estimation, with potential applicability across diverse agricultural regions globally.
- North America > United States (0.68)
- Africa > Middle East > Tunisia > Kairouan Governorate > Kairouan (0.27)
- Africa > Middle East > Tunisia > Sousse Governorate > Sousse (0.27)
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Theoretical Framework for Tempered Fractional Gradient Descent: Application to Breast Cancer Classification
This paper introduces Tempered Fractional Gradient Descent (TFGD), a novel optimization framework that synergizes fractional calculus with exponential tempering to enhance gradient-based learning. Traditional gradient descent methods often suffer from oscillatory updates and slow convergence in high-dimensional, noisy landscapes. TFGD addresses these limitations by incorporating a tempered memory mechanism, where historical gradients are weighted by fractional coefficients $|w_j| = \binomα{j}$ and exponentially decayed via a tempering parameter $λ$. Theoretical analysis establishes TFGD's convergence guarantees: in convex settings, it achieves an $\mathcal{O}(1/K)$ rate with alignment coefficient $d_{α,λ} = (1 - e^{-λ})^{-α}$, while stochastic variants attain $\mathcal{O}(1/k^α)$ error decay. The algorithm maintains $\mathcal{O}(n)$ time complexity equivalent to SGD, with memory overhead scaling as $\mathcal{O}(d/λ)$ for parameter dimension $d$. Empirical validation on the Breast Cancer Wisconsin dataset demonstrates TFGD's superiority, achieving 98.25\% test accuracy (vs. 92.11\% for SGD) and 2$\times$ faster convergence. The tempered memory mechanism proves particularly effective in medical classification tasks, where feature correlations benefit from stable gradient averaging. These results position TFGD as a robust alternative to conventional optimizers in both theoretical and applied machine learning.
- North America > United States > Wisconsin (0.26)
- Africa > Middle East > Tunisia > Kairouan Governorate > Kairouan (0.05)
- Research Report (0.50)
- Instructional Material > Course Syllabus & Notes (0.34)
Convolutional Fourier Analysis Network (CFAN): A Unified Time-Frequency Approach for ECG Classification
Machine learning has transformed the classification of biomedical signals such as electrocardiograms (ECGs). Advances in deep learning, particularly convolutional neural networks (CNNs), enable automatic feature extraction, raising the question: Can combining time- and frequency-domain attributes enhance classification accuracy? To explore this, we evaluated three ECG classification tasks: (1) arrhythmia classification, (2) identity recognition, and (3) apnea detection. We initially tested three methods: (i) 2-D spectrogram-based frequency-time classification (SPECT), (ii) time-domain classification using a 1-D CNN (CNN1D), and (iii) frequency-domain classification using a Fourier transform-based CNN (FFT1D). Performance was validated using K-fold cross-validation. Among these, CNN1D (time only) performed best, followed by SPECT (time-frequency) and FFT1D (frequency only). Surprisingly, SPECT, which integrates time- and frequency-domain features, performed worse than CNN1D, suggesting a need for a more effective time and frequency fusion approach. To address this, we tested the recently proposed Fourier Analysis Network (FAN), which combines time- and frequency-domain features. However, FAN performed comparably to CNN1D, excelling in some tasks while underperforming in others. To enhance this approach, we developed the Convolutional Fourier Analysis Network (CFAN), which integrates FAN with CNN. CFAN outperformed all previous methods across all classification tasks. These findings underscore the advantages of combining time- and frequency-domain features, demonstrating CFAN's potential as a powerful and versatile solution for ECG classification and broader biomedical signal analysis
- Asia > India (0.05)
- South America > Chile > Valparaíso Region > Valparaíso Province > Valparaíso (0.04)
- South America > Brazil > São Paulo (0.04)
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- Information Technology > Artificial Intelligence > Machine Learning > Statistical Learning (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Performance Analysis (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Neural Networks > Deep Learning (1.00)
Exploring the Role of Convolutional Neural Networks (CNN) in Dental Radiography Segmentation: A Comprehensive Systematic Literature Review
Brahmi, Walid, Jdey, Imen, Drira, Fadoua
In the field of dentistry, there is a growing demand for increased precision in diagnostic tools, with a specific focus on advanced imaging techniques such as computed tomography, cone beam computed tomography, magnetic resonance imaging, ultrasound, and traditional intra-oral periapical X-rays. Deep learning has emerged as a pivotal tool in this context, enabling the implementation of automated segmentation techniques crucial for extracting essential diagnostic data. This integration of cutting-edge technology addresses the urgent need for effective management of dental conditions, which, if left undetected, can have a significant impact on human health. The impressive track record of deep learning across various domains, including dentistry, underscores its potential to revolutionize early detection and treatment of oral health issues. Objective: Having demonstrated significant results in diagnosis and prediction, deep convolutional neural networks (CNNs) represent an emerging field of multidisciplinary research. The goals of this study were to provide a concise overview of the state of the art, standardize the current debate, and establish baselines for future research. Method: In this study, a systematic literature review is employed as a methodology to identify and select relevant studies that specifically investigate the deep learning technique for dental imaging analysis. This study elucidates the methodological approach, including the systematic collection of data, statistical analysis, and subsequent dissemination of outcomes. Conclusion: This work demonstrates how Convolutional Neural Networks (CNNs) can be employed to analyze images, serving as effective tools for detecting dental pathologies. Although this research acknowledged some limitations, CNNs utilized for segmenting and categorizing teeth exhibited their highest level of performance overall.
- Asia > Middle East > Republic of Türkiye > Amasya Province > Amasya (0.04)
- Asia > China (0.04)
- Africa > Middle East > Tunisia > Kairouan Governorate > Kairouan (0.04)
- (14 more...)
- Research Report > Experimental Study (1.00)
- Overview (1.00)
- Research Report > New Finding (0.88)
- Health & Medicine > Therapeutic Area > Dental and Oral Health (1.00)
- Health & Medicine > Nuclear Medicine (1.00)
- Health & Medicine > Diagnostic Medicine > Imaging (1.00)
Deep learning and machine learning for Malaria detection: overview, challenges and future directions
Jdey, Imen, Hcini, Ghazala, Ltifi, Hela
To have the greatest impact, public health initiatives must be made using evidence-based decision-making. Machine learning Algorithms are created to gather, store, process, and analyse data to provide knowledge and guide decisions. A crucial part of any surveillance system is image analysis. The communities of computer vision and machine learning has ended up curious about it as of late. This study uses a variety of machine learning and image processing approaches to detect and forecast the malarial illness. In our research, we discovered the potential of deep learning techniques as smart tools with broader applicability for malaria detection, which benefits physicians by assisting in the diagnosis of the condition. We examine the common confinements of deep learning for computer frameworks and organising, counting need of preparing data, preparing overhead, realtime execution, and explain ability, and uncover future inquire about bearings focusing on these restrictions.
- Africa > Middle East > Tunisia > Kairouan Governorate > Kairouan (0.05)
- Africa > Middle East > Tunisia > Sidi Bouzid Governorate > Sidi Bouzid (0.04)
- Asia > Singapore (0.04)
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- Research Report > New Finding (0.66)
- Research Report > Experimental Study (0.46)
NADI 2020: The First Nuanced Arabic Dialect Identification Shared Task
Abdul-Mageed, Muhammad, Zhang, Chiyu, Bouamor, Houda, Habash, Nizar
We present the results and findings of the First Nuanced Arabic Dialect Identification Shared Task (NADI). This Shared Task includes two subtasks: country-level dialect identification (Subtask 1) and province-level sub-dialect identification (Subtask 2). The data for the shared task covers a total of 100 provinces from 21 Arab countries and are collected from the Twitter domain. As such, NADI is the first shared task to target naturally-occurring fine-grained dialectal text at the sub-country level. A total of 61 teams from 25 countries registered to participate in the tasks, thus reflecting the interest of the community in this area. We received 47 submissions for Subtask 1 from 18 teams and 9 submissions for Subtask 2 from 9 teams.
- Asia > Middle East > UAE > Abu Dhabi Emirate > Abu Dhabi (0.14)
- Africa > Middle East > Djibouti (0.14)
- North America > United States > Minnesota > Hennepin County > Minneapolis (0.14)
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Uncertain and Approximative Knowledge Representation to Reasoning on Classification with a Fuzzy Networks Based System
The approach described here allows to use the fuzzy Object Based Representation of imprecise and uncertain knowledge. This representation has a great practical interest due to the possibility to realize reasoning on classification with a fuzzy semantic network based system. For instance, the distinction between necessary, possible and user classes allows to take into account exceptions that may appear on fuzzy knowledge-base and facilitates integration of user's Objects in the base. This approach describes the theoretical aspects of the architecture of the whole experimental A.I. system we built in order to provide effective on-line assistance to users of new technological systems: the understanding of "how it works" and "how to complete tasks" from queries in quite natural languages. In our model, procedural semantic networks are used to describe the knowledge of an "ideal" expert while fuzzy sets are used both to describe the approximative and uncertain knowledge of novice users in fuzzy semantic networks which intervene to match fuzzy labels of a query with categories from our "ideal" expert.
- North America > United States > California > Los Angeles County > Los Angeles (0.05)
- Africa > Middle East > Tunisia > Kairouan Governorate > Kairouan (0.04)
- Information Technology > Artificial Intelligence > Representation & Reasoning > Object-Oriented Architecture (1.00)
- Information Technology > Artificial Intelligence > Representation & Reasoning > Semantic Networks (0.78)
- Information Technology > Artificial Intelligence > Representation & Reasoning > Uncertainty > Fuzzy Logic (0.35)