Results 11 to 20 of about 84,467 (191)

Recurrence Quantification Analysis for Scene Change Detection and Foreground/Background Segmentation in Videos [PDF]

open access: yesJournal of Imaging
This paper presents the mathematical framework of Recurrence Quantification Analysis (RQA) for dynamic video processing, exploring its applications in two primary tasks: scene change detection and adaptive foreground/background segmentation.
Theodora Kyprianidi   +2 more
doaj   +2 more sources

Recurrence quantification analysis of heart rate variability to detect both ventilatory thresholds. [PDF]

open access: yesPLoS ONE, 2021
Aims of this study were: to verify if Recurrence Quantification Analysis (RQA) of Heart Rate Variability (HRV) time series could determine both ventilatory thresholds in individuals with different fitness levels, and to assess the validity of RQA method ...
Giovanna Zimatore   +7 more
doaj   +2 more sources

Identifying OSPF Anomalies Using Recurrence Quantification Analysis [PDF]

open access: green, 2018
Open Shortest Path First (OSPF) is one of the most widely used routing protocol to manage intra-domain routing. OSPF has been identified with many serious security issues. LSA falsification is one of the most critical vulnerability that can cause route loop and black hole. Network operators need to rapidly identity such anomalies.
Bahaa Al-Musawi, Philip Branch
openalex   +3 more sources

Cross-Recurrence Quantification Analysis of Behavioral Streams: An R Package [PDF]

open access: goldFrontiers in Psychology, 2014
This paper describes the R package crqa to perform cross-recurrence quantification analysis of two time series of either a categorical or continuous nature.
Moreno I. Coco, Rick eDale
doaj   +2 more sources

Recurrence Quantification Analysis of Sentence-Level Speech Kinematics. [PDF]

open access: yesJ Speech Lang Hear Res, 2016
PurposeCurrent approaches to assessing sentence-level speech variability rely on measures that quantify variability across utterances and use normalization procedures that alter raw trajectory data. The current work tests the feasibility of a less restrictive nonlinear approach—recurrence quantification analysis (RQA)—via a procedural example and ...
Jackson ES   +3 more
europepmc   +4 more sources

Recurrence Quantification Analysis of F-Waves and the Evaluation of Neuropathies [PDF]

open access: yesNeurology Research International, 2015
Electrodiagnostic (EDX) patterns of neuropathic dysfunction have been based on axonal/demyelinating criteria requiring prior assumptions. This has not produced classifications of desired sensitivity or specificity.
Morris A. Fisher   +2 more
doaj   +2 more sources

Investigation of nonlinear pupil dynamics by recurrence quantification analysis. [PDF]

open access: yesBiomed Res Int, 2013
Pupil is controlled by the autonomous nervous system (ANS). It shows complex movements and changes of size even in conditions of constant stimulation. The possibility of extracting information on ANS by processing data recorded during a short experiment using a low cost system for pupil investigation is studied.
Mesin L, Monaco A, Cattaneo R.
europepmc   +5 more sources

Nonlinear Multiscale Entropy and Recurrence Quantification Analysis of Foreign Exchange Markets Efficiency [PDF]

open access: yesEntropy, 2017
The regularity of price fluctuations in exchange rates plays a crucial role in foreign exchange (FX) market dynamics. In this paper, we quantify the multiply irregular fluctuation behaviors of exchange rates in the last 10 years (November 2006–November ...
Hongli Niu, Lin Zhang
doaj   +2 more sources

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