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We propose a novel approach to the problem of semantic heterogeneity where data are organized into a set of stratified and independent representation layers, namely: conceptual(where a set of unique alinguistic identifiers are connected…

Databases · Computer Science 2021-05-21 Fausto Giunchiglia , Alessio Zamboni , Mayukh Bagchi , Simone Bocca

Semantic Heterogeneity is conventionally understood as the existence of variance in the representation of a target reality when modelled, by independent parties, in different databases, schemas and/ or data. We argue that the mere encoding…

Artificial Intelligence · Computer Science 2022-07-05 Fausto Giunchiglia , Mayukh Bagchi

The real-world data usually exhibits heterogeneous properties such as modalities, views, or resources, which brings some unique challenges wherein the key is Heterogeneous Representation Learning (HRL) termed in this paper. This brief…

Machine Learning · Computer Science 2020-05-01 Joey Tianyi Zhou , Xi Peng , Yew-Soon Ong

Academic networks in the real world can usually be described by heterogeneous information networks composed of multi-type nodes and relationships. Some existing research on representation learning for homogeneous information networks lacks…

Information Retrieval · Computer Science 2023-11-03 Junfu Wang , Yawen Li , Zhe Xue , Ang Li

In this paper, we frame homogeneous-feature multi-task learning (MTL) as a hierarchical representation learning problem, with one task-agnostic and multiple task-specific latent representations. Drawing inspiration from the information…

Machine Learning · Computer Science 2022-10-04 João Machado de Freitas , Sebastian Berg , Bernhard C. Geiger , Manfred Mücke

This paper contains analysis of concept of a class within different object-oriented knowledge representation models. The main attention is paid to structure of the class and its efficiency in the context of data storage, using…

Artificial Intelligence · Computer Science 2018-11-02 Dmytro Terletskyi

This work analyses main features that should be present in knowledge representation. It suggests a model for representation and a way to implement this model in software. Representation takes care of both low-level sensor information and…

Artificial Intelligence · Computer Science 2007-05-23 Mikalai Birukou

Expert finding is an important task in both industry and academia. It is challenging to rank candidates with appropriate expertise for various queries. In addition, different types of objects interact with one another, which naturally forms…

Information Retrieval · Computer Science 2018-03-12 Huan Gui , Qi Zhu , Liyuan Liu , Aston Zhang , Jiawei Han

There are many real-world knowledge based networked systems with multi-type interacting entities that can be regarded as heterogeneous networks including human connections and biological evolutions. One of the main issues in such networks…

Social and Information Networks · Computer Science 2019-11-05 Soheila Molaei , Hadi Zare , Hadi Veisi

Textual information is considered as significant supplement to knowledge representation learning (KRL). There are two main challenges for constructing knowledge representations from plain texts: (1) How to take full advantages of sequential…

Computation and Language · Computer Science 2016-09-23 Jiawei Wu , Ruobing Xie , Zhiyuan Liu , Maosong Sun

We show state-of-the-art word representation learning methods maximize an objective function that is a lower bound on the mutual information between different parts of a word sequence (i.e., a sentence). Our formulation provides an…

Computation and Language · Computer Science 2019-11-27 Lingpeng Kong , Cyprien de Masson d'Autume , Wang Ling , Lei Yu , Zihang Dai , Dani Yogatama

In language processing, training data with extremely large variance may lead to difficulty in the language model's convergence. It is difficult for the network parameters to adapt sentences with largely varied semantics or grammatical…

Computation and Language · Computer Science 2022-05-26 Yunhao Yang , Zhaokun Xue

An essential design decision for multilingual Neural Text-To-Speech (NTTS) systems is how to represent input linguistic features within the model. Looking at the wide variety of approaches in the literature, two main paradigms emerge,…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-05 Ariadna Sanchez , Alessio Falai , Ziyao Zhang , Orazio Angelini , Kayoko Yanagisawa

An information-theoretic framework is introduced to analyze last-layer embedding, focusing on learned representations for regression tasks. We define representation-rate and derive limits on the reliability with which input-output…

Information Theory · Computer Science 2026-05-27 Deborah Pereg , Michael Wand

The paper introduces an extension of the proposal according to which conceptual representations in cognitive agents should be intended as heterogeneous proxytypes. The main contribution of this paper is in that it details how to reconcile,…

Artificial Intelligence · Computer Science 2019-09-05 Antonio Lieto

Understanding learning materials (e.g. test questions) is a crucial issue in online learning systems, which can promote many applications in education domain. Unfortunately, many supervised approaches suffer from the problem of scarce human…

Machine Learning · Computer Science 2019-05-28 Yu Yin , Qi Liu , Zhenya Huang , Enhong Chen , Wei Tong , Shijin Wang , Yu Su

Since real-world objects and their interactions are often multi-modal and multi-typed, heterogeneous networks have been widely used as a more powerful, realistic, and generic superclass of traditional homogeneous networks (graphs).…

Social and Information Networks · Computer Science 2020-12-18 Carl Yang , Yuxin Xiao , Yu Zhang , Yizhou Sun , Jiawei Han

Lifelong learning aims to preserve knowledge acquired from previous tasks while incorporating knowledge from a sequence of new tasks. However, most prior work explores only streams of homogeneous tasks (\textit{e.g.}, only classification…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Xuerui Zhang , Xuehao Wang , Zhan Zhuang , Linglan Zhao , Ziyue Li , Xinmin Zhang , Zhihuan Song , Yu Zhang

The purpose of the paper is to propose models to reduce the semantic complexity in heterogeneous DLs. The aim is to introduce value-added services (treatment of term vagueness and document re-ranking) that gain a certain quality in DLs if…

Digital Libraries · Computer Science 2019-01-15 Philipp Mayr , Peter Mutschke , Vivien Petras

Most existing word embedding approaches do not distinguish the same words in different contexts, therefore ignoring their contextual meanings. As a result, the learned embeddings of these words are usually a mixture of multiple meanings. In…

Computation and Language · Computer Science 2016-12-04 Jian Tang , Meng Qu , Qiaozhu Mei
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