Causal Modelling Based on Bayesian Networks for Preliminary Design of Buildings

Bayesian networks are a very general and powerful tool that can be used for a large number of problems involving uncertainty: reasoning, learning, planning and perception. They provide a language that supports efficient algorithms for the automatic construction of expert systems in several different contexts. The range of applications of Bayesian networks currently extends over almost all fields including engineering, biology and medicine, information and communication technologies and finance. This book is a collection of original contributions to the methodology and applications of Bayesian networks. It contains recent developments in the field and illustrates, on a sample of applications, the power of Bayesian networks in dealing the modeling of complex systems. Readers that are not familiar with this tool, but have some technical background, will find in this book all necessary theoretical and practical information on how to use and implement Bayesian networks in their own work. There is no doubt that this book constitutes a valuable resource for engineers, researchers, students and all those who are interested in discovering and experiencing the potential of this major tool of the century

Node Classification in Uncertain Graphs

In many real applications that use and analyze networked data, the links in the network graph may be erroneous, or derived from probabilistic techniques. In such cases, the node classification problem can be challenging, since the unreliability of the links may affect the final results of the classification process. If the information about link reliability is not used explicitly, the classification accuracy in the underlying network may be affected adversely. In this paper, we focus on situations that require the analysis of the uncertainty that is present in the graph structure. We study the novel problem of node classification in uncertain graphs, by treating uncertainty as a first-class citizen. We propose two techniques based on a Bayes model and automatic parameter selection, and show that the incorporation of uncertainty in the classification process as a first-class citizen is beneficial. We experimentally evaluate the proposed approach using different real data sets, and study the behavior of the algorithms under different conditions. The results demonstrate the effectiveness and efficiency of our approach

Bayesian Non-Exhaustive Classification A Case Study: Online Name Disambiguation using Temporal Record Streams

The name entity disambiguation task aims to partition the records of multiple real-life persons so that each partition contains records pertaining to a unique person. Most of the existing solutions for this task operate in a batch mode, where all records to be disambiguated are initially available to the algorithm. However, more realistic settings require that the name disambiguation task be performed in an online fashion, in addition to, being able to identify records of new ambiguous entities having no preexisting records. In this work, we propose a Bayesian non-exhaustive classification framework for solving online name disambiguation task. Our proposed method uses a Dirichlet process prior with a Normal * Normal * Inverse Wishart data model which enables identification of new ambiguous entities who have no records in the training data. For online classification, we use one sweep Gibbs sampler which is very efficient and effective. As a case study we consider bibliographic data in a temporal stream format and disambiguate authors by partitioning their papers into homogeneous groups. Our experimental results demonstrate that the proposed method is better than existing methods for performing online name disambiguation task.Comment: to appear in CIKM 201

Towards combining deep learning and statistical relational learning for reasoning on graphs

Cette thèse se focalise sur l'analyse de données structurées en graphes, un format de données répandu dans le monde réel. Le raisonnement dans ces données est un enjeu clé en apprentissage automatique, avec des applications allant de la classification de nœuds à la prédiction de liens. On distingue deux approches majeures pour le raisonnement dans les données en graphes : l'apprentissage relationnel statistique et l'apprentissage profond. L'apprentissage relationnel statistique construit des modèles graphiques probabilistes, efficaces pour capturer des dépendances complexes et intégrer des connaissances préexistantes, comme les règles logiques. Des méthodes notables incluent les réseaux logiques de Markov et les champs aléatoires conditionnels. L'apprentissage profond, quant à lui, se base sur l'apprentissage de représentations pertinentes des données observées pour une compréhension et un raisonnement rapides. Les réseaux neuronaux pour graphes (GNN) représentent un outil de pointe dans ce domaine. La combinaison de l'apprentissage relationnel statistique et de l'apprentissage profond offre une perspective enrichie sur le raisonnement, promettant un cadre plus robuste et efficace. Cette thèse explore cette combinaison, en développant des méthodes qui intègrent les deux approches. L'apprentissage profond renforce l'efficacité de l'apprentissage et de l'inférence dans l'apprentissage relationnel statistique, tandis que ce dernier affine les prédictions de l'apprentissage profond. Ce cadre intégré est appliqué à un éventail de tâches de raisonnement sur les graphes, démontrant son efficacité et ouvrant la voie à des recherches futures pour des cadres de raisonnement encore plus robustes.This thesis centers on the analysis of graph-structured data, a ubiquitous data format in the real world. Reasoning within graph-structured data has long been a fundamental problem in machine learning, with applications spanning from node classification to link prediction. There are two principal approaches to tackle reasoning within graph-structured data: statistical relational learning and deep learning. Statistical relational learning techniques construct probabilistic graphical models based on observed data, excelling at capturing intricate dependencies of available evidence while accommodating prior knowledge, such as logic rules. Notable methods include Markov logic networks (MLNs) and conditional random fields (CRFs). In contrast, deep learning models harness the capability to learn meaningful representations from observed data, using these representations to rapidly comprehend and reason over the data. Graph neural networks (GNNs) have emerged as prominent tools in the realm of deep learning, achieving state-of-the-art results across a spectrum of tasks. Statistical relational learning and deep learning offer distinct perspectives on reasoning. Intuitively, combining these paradigms promises to create a more robust framework that inherits expressive power, efficiency, and the ability to model joint dependencies while simultaneously acquiring representations for more effective reasoning. In pursuit of this vision, this thesis explores the concept, developing methods that seamlessly integrate deep learning and statistical relational learning. Specifically, deep learning enhances the efficiency of learning and inference within statistical relational learning, while statistical relational learning, in turn, refines the predictions generated by deep learning to improve the accuracy. This integrated paradigm is applied across a diverse range of reasoning tasks on graphs. Empirical results demonstrate the effectiveness of this paradigm, encouraging further exploration to yield more robust reasoning frameworks