Results 21 to 30 of about 739,545 (283)

Novel Method for Speeding Up Time Series Processing in Smart City Applications

open access: yesSmart Cities, 2022
The huge amount of daily generated data in smart cities has called for more effective data storage, processing, and analysis technologies. A significant part of this data are streaming data (i.e., time series data).
Mohammad Bawaneh, Vilmos Simon
doaj   +1 more source

Mid-level Deep Pattern Mining [PDF]

open access: yes, 2015
Mid-level visual element discovery aims to find clusters of image patches that are both representative and discriminative. In this work, we study this problem from the prospective of pattern mining while relying on the recently popularized Convolutional ...
Hengel, Anton van den   +3 more
core   +1 more source

Mining Periodic-Frequent Patterns in Irregular Dense Temporal Databases Using Set Complements

open access: yesIEEE Access, 2023
Periodic-frequent patterns are a vital class of regularities in a temporal database. Most previous studies followed the approach of finding these patterns by storing the temporal occurrence information of a pattern in a list.
Pamalla Veena   +6 more
doaj   +1 more source

Human Activity Recognition through Weighted Finite Automata

open access: yesProceedings, 2018
This work addresses the problem of human activity identification in an ubiquitous environment, where data is collected from a wide variety of sources.
Sergio Salomón, Cristina Tîrnăucă
doaj   +1 more source

Non-Query-Based Pattern Mining and Sentiment Analysis for Massive Microblogging Online Texts

open access: yesIEEE Access, 2020
Pattern mining has been widely studied in the last decade given its great interest for research and its numerous applications in the real world. In this paper the definition of query and non-query based systems is proposed, highlighting the needs of non ...
Jose Angel Diaz-Garcia   +2 more
doaj   +1 more source

Data-driven structural synthesis of supercritical CO2 power cycles

open access: yesFrontiers in Chemical Engineering, 2023
With new materials, objectives or constraints, it becomes increasingly difficult to develop optimal processes using conventional heuristics-based or superstructure-based methods.
Tahar Nabil   +2 more
doaj   +1 more source

DESQ: Frequent Sequence Mining with Subsequence Constraints [PDF]

open access: yes, 2016
Frequent sequence mining methods often make use of constraints to control which subsequences should be mined. A variety of such subsequence constraints has been studied in the literature, including length, gap, span, regular-expression, and hierarchy ...
Beedkar, Kaustubh, Gemulla, Rainer
core   +1 more source

Efficient chain structure for high-utility sequential pattern mining [PDF]

open access: yes, 2020
High-utility sequential pattern mining (HUSPM) is an emerging topic in data mining, which considers both utility and sequence factors to derive the set of high-utility sequential patterns (HUSPs) from the quantitative databases.
Djenouri, Youcef   +4 more
core   +4 more sources

Flexible constrained sampling with guarantees for pattern mining [PDF]

open access: yes, 2017
Pattern sampling has been proposed as a potential solution to the infamous pattern explosion. Instead of enumerating all patterns that satisfy the constraints, individual patterns are sampled proportional to a given quality measure.
A Giacometti   +15 more
core   +3 more sources

Semantic-Geographic Trajectory Pattern Mining Based on a New Similarity Measurement

open access: yesISPRS International Journal of Geo-Information, 2017
Trajectory pattern mining is becoming increasingly popular because of the development of ubiquitous computing technology. Trajectory data contain abundant semantic and geographic information that reflects people’s movement patterns, i.e., who is ...
You Wan, Chenghu Zhou, Tao Pei
doaj   +1 more source

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