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Retrieval-Augmented Generation (RAG) systems combine Large Language Models (LLMs) with external knowledge, and their performance depends heavily on how that knowledge is represented. This study investigates how different Knowledge Graph…

Information Retrieval · Computer Science 2025-11-11 Tiago da Cruz , Bernardo Tavares , Francisco Belo

The knowledge representation community has built general-purpose ontologies which contain large amounts of commonsense knowledge over relevant aspects of the world, including useful visual information, e.g.: "a ball is used by a football…

Artificial Intelligence · Computer Science 2017-05-25 Rodrigo Toro Icarte , Jorge A. Baier , Cristian Ruz , Alvaro Soto

We define an inference system to capture explanations based on causal statements, using an ontology in the form of an IS-A hierarchy. We first introduce a simple logical language which makes it possible to express that a fact causes another…

Artificial Intelligence · Computer Science 2010-05-02 Philippe Besnard , Marie-Odile Cordier , Yves Moinard

This survey provides an analysis of current methodologies integrating legal and logical specifications into the perception, prediction, and planning modules of automated driving systems. We systematically explore techniques ranging from…

Robotics · Computer Science 2025-10-30 Kumar Manas , Mert Keser , Alois Knoll

The SemanticWeb emerged as an extension to the traditional Web, towards adding meaning to a distributed Web of structured and linked data. At its core, the concept of ontology provides the means to semantically describe and structure…

Artificial Intelligence · Computer Science 2021-05-03 Konstantinos Sikelis , George E Tsekouras , Konstantinos I Kotis

Organizing a large-scale knowledge graph into a typed property graph requires structural decisions -- which entities become nodes, which properties become edges, and what schema governs these choices. Existing approaches embed these…

Artificial Intelligence · Computer Science 2026-04-06 Yitao Li , Zhanlin Liu , Anuranjan Pandey , Muni Srikanth

This paper presents an idea of inductive learning use for rule generation from ontologies. The main purpose of the paper is to evaluate the possibility of inductive learning use in rule generation from ontologies and to develop the way how…

Artificial Intelligence · Computer Science 2015-02-18 Olegs Verhodubs

Nowadays, the video documents like educational courses available on the web increases significantly. However, the information retrieval systems today can not return to the users (students or teachers) of parts of those videos that meet…

Digital Libraries · Computer Science 2012-01-25 Ghalia Merzougui , Mahieddine Djoudi , Amel Behaz

Currently, the text document retrieval systems have many challenges in exploring the semantics of queries and documents. Each query implies information which does not appear in the query but the documents related with the information are…

Information Retrieval · Computer Science 2019-05-16 Ngo Minh Vuong

Automatic construction of ontologies from text is generally based on retrieving text content. For a much more rich ontology we extend these approaches by taking into account the document structure and some external resources (like thesaurus…

Information Retrieval · Computer Science 2010-02-02 Eric Kergosien , Mouna Kamel , Christian Sallaberry , Marie-Noëlle Bessagnet , Nathalie Aussenac- Gilles , Mauro Gaio

It is a long-standing question to discover causal relations among a set of variables in many empirical sciences. Recently, Reinforcement Learning (RL) has achieved promising results in causal discovery from observational data. However,…

Machine Learning · Computer Science 2021-09-16 Xiaoqiang Wang , Yali Du , Shengyu Zhu , Liangjun Ke , Zhitang Chen , Jianye Hao , Jun Wang

This article presents a concept model, and the associated tool to help advanced learners to find adapted bibliography. The purpose is the use of an IT representation as educational research software for newcomers in research. We use an…

Digital Libraries · Computer Science 2012-02-07 Gérald Kembellec , Imad Saleh , Catherine Sauvaget

This paper presents a mixed traffic control policy designed to optimize traffic efficiency across diverse road topologies, addressing issues of congestion prevalent in urban environments. A model-free reinforcement learning (RL) approach is…

Robotics · Computer Science 2025-01-29 Chuyang Xiao , Dawei Wang , Xinzheng Tang , Jia Pan , Yuexin Ma

Many real world problems can be expressed as optimisation problems. Solving this kind of problems means to find, among all possible solutions, the one that maximises an evaluation function. One approach to solve this kind of problem is to…

Artificial Intelligence · Computer Science 2012-04-24 Patrick Taillandier , Cécile Duchêne , Alexis Drogoul

Euclidean geometry has historically played a central role in cultivating logical reasoning and abstract thinking within mathematics education, but has experienced waning emphasis in recent curricula. The resurgence of interest, driven by…

History and Overview · Mathematics 2025-11-18 Michael Bouzinier , Sergey Trifonov , Matthew Chen , Tarun Venkatesh , Lielle Rifkin

The term legal research generally refers to the process of identifying and retrieving appropriate information necessary to support legal decision making from past case records. At present, the process is mostly manual, but some traditional…

Information Retrieval · Computer Science 2012-11-09 Mohamed Firdhous

Large language models (LLMs) have shown remarkable capabilities in natural language processing. However, in knowledge graph question answering tasks (KGQA), there remains the issue of answering questions that require multi-hop reasoning.…

Computation and Language · Computer Science 2025-08-22 Runxuan Liu , Bei Luo , Jiaqi Li , Baoxin Wang , Ming Liu , Dayong Wu , Shijin Wang , Bing Qin

Engineering projects for railway infrastructure typically involve many subsystems which need consistent views of the planned and built infrastructure and its underlying topology. Consistency is typically ensured by exchanging and verifying…

Artificial Intelligence · Computer Science 2021-10-05 Stefan Bischof , Gottfried Schenner

Use case specifications have successfully been used for requirements description. They allow joining, in the same modeling space, the expectations of the stakeholders as well as the needs of the software engineer and analyst involved in the…

Software Engineering · Computer Science 2014-04-04 Rui Couto , António Nestor Ribeiro , José Creissac Campos

Ontology-based approach to the Natural Language Understanding (NLU) processing allows to improve questions answering quality in dialogue systems. We describe our NLU engine architecture and evaluate its implementation. The engine transforms…

Software Engineering · Computer Science 2021-11-09 Sergey Gorshkov , Constantin Kondratiev , Roman Shebalov