scispace - formally typeset
Open AccessJournal ArticleDOI

Learning in the presence of concept drift and hidden contexts

TLDR
A family of learning algorithms that flexibly react to concept drift and can take advantage of situations where contexts reappear are described, including a heuristic that constantly monitors the system's behavior.
Abstract
On-line learning in domains where the target concept depends on some hidden context poses serious problems. A changing context can induce changes in the target concepts, producing what is known as concept drift. We describe a family of learning algorithms that flexibly react to concept drift and can take advantage of situations where contexts reappear. The general approach underlying all these algorithms consists of (1) keeping only a window of currently trusted examples and hypotheses; (2) storing concept descriptions and reusing them when a previous context re-appears; and (3) controlling both of these functions by a heuristic that constantly monitors the system's behavior. The paper reports on experiments that test the systems' perfomance under various conditions such as different levels of noise and different extent and rate of concept drift.

read more

Content maybe subject to copyright    Report

Citations
More filters
Book ChapterDOI

A Comparison of Batch and Incremental Supervised Learning Algorithms

TL;DR: It is claimed that incremental learning might be more suitable for learning from frequently updated databases than batch learning, although a number of issues remain to be resolved.
Book ChapterDOI

Towards Hierarchical Classification of Data Streams

TL;DR: This paper proposes an incremental method for hierarchical classification of data streams and experimentally shows that this stream hierarchical classifier present advantages to the traditional online setting in three real-world problems related to entomology, ichthyology, and audio processing.
Proceedings Article

Matchmaker: Data Drift Mitigation in Machine Learning for Large-Scale Systems

TL;DR: The proposed Matchmaker is the first scalable, adaptive, and adaptive solution to the data drift problem in large-scale production systems and introduces a novel similarity metric to address multiple types of data drifts while only incurring limited overhead.
Journal Article

Experiments with two approaches for tracking drifting concepts

TL;DR: This paper addresses the task of learning classiers from streams of labelled data and studies two mechanisms based on the time window idea, which can be used with any learning algorithm to deal with changing concepts.

Forecasting in Database Systems

TL;DR: A novel approach is introduced that seamlessly integrates time series forecasting into an existing database management system and supports a new query type — a forecast query — that enables forecasting of time series data for any user and is automatically processed by the core engine of an existing DBMS.
References
More filters
Proceedings ArticleDOI

A theory of the learnable

TL;DR: This paper regards learning as the phenomenon of knowledge acquisition in the absence of explicit programming, and gives a precise methodology for studying this phenomenon from a computational viewpoint.
Journal ArticleDOI

Instance-Based Learning Algorithms

TL;DR: This paper describes how storage requirements can be significantly reduced with, at most, minor sacrifices in learning rate and classification accuracy and extends the nearest neighbor algorithm, which has large storage requirements.
Book

Machine Learning: An Artificial Intelligence Approach

TL;DR: This book contains tutorial overviews and research papers on contemporary trends in the area of machine learning viewed from an AI perspective, including learning from examples, modeling human learning strategies, knowledge acquisition for expert systems, learning heuristics, discovery systems, and conceptual data analysis.
Journal ArticleDOI

Learnability and the Vapnik-Chervonenkis dimension

TL;DR: This paper shows that the essential condition for distribution-free learnability is finiteness of the Vapnik-Chervonenkis dimension, a simple combinatorial parameter of the class of concepts to be learned.
Journal ArticleDOI

Queries and Concept Learning

TL;DR: This work considers the problem of using queries to learn an unknown concept, and several types of queries are described and studied: membership, equivalence, subset, superset, disjointness, and exhaustiveness queries.