Results 31 to 40 of about 618 (183)
[Retracted] Estimation of International Gold Price by Fusing Deep/Shallow Machine Learning
Journal of Advanced Transportation, Volume 2022, Issue 1, 2022., 2022 In this work, we propose a new method that combines the support vector machine (SVM) and the long short‐term memory (LSTM) model utilizing the theory of quotient space to predict the price of gold by leveraging the price factors that have supposedly an impact on the gold price.
Wenjing Chen, Muhammad Arif
wiley +1 more source
Research on Dynamic Characteristics of Stock Market Based on Big Data Analysis
Discrete Dynamics in Nature and Society, Volume 2022, Issue 1, 2022., 2022 The stock market is a real and continuously evolving extremely complex dynamic system. This paper analyzes the change of stock market efficiency from the perspective of dynamic evolution, and the recursive graph method is used to obtain the dynamic characteristics of stock price time series.
Ping Yang, Xiaohong Hou, Gengxin Sun
wiley +1 more source
Journal of Hydroinformatics, 2023 Due to the influences of geological structures, many confined ascending springs occur in North China's karst area. The electrical conductivity (EC) of karst spring flow is a fundamental variable in characterizing karst systems.
Miao Yu +5 more
doaj +1 more source
Design and application of electrocardiograph diagnosis system based on multifractal theory
网络与信息安全学报, 2017 An automatic segmentation algorithm for ECG data using differential threshold method was designed,which could identify the various ECG cycles of continuous ECG data.And it could obtain the multifractal features of multiple fractal and generalize hurst ...
Chun-kai ZHANG,Ao,ZHANGJing-wang YIN,Pan-bo TIAN,Ying ZHOU,Chang-qing QI
doaj +3 more sources
Sign Retention in Classical MF-DFA
Fractal and Fractional, 2022 In this paper, we propose a one-dimensional (1D) multifractal sign retention detrending fluctuation analysis algorithm (MF-S-DFA). The proposed method is based on conventional multifractal detrending fluctuation analysis (MF-DFA).
Mengdie Yang, Yudong Zhang, Jian Wang
doaj +1 more source
Cognitive Science, Volume 45, Issue 6, June 2021., 2021 Abstract Gestures and speech are clearly synchronized in many ways. However, previous studies have shown that the semantic similarity between gestures and speech breaks down as people approach transitions in understanding. Explanations for these gesture–speech mismatches, which focus on gestures and speech expressing different cognitive strategies ...
Lisette De Jonge‐Hoekstra +3 more
wiley +1 more source
, 2021 Main updates are: EMD is now an extra feature, thus by standard only numpy is needed for MFDFA to work.
Galib Hassan, Rydin
core +1 more source
Modeling Dynamic Multifractal Efficiency of US Electricity Market
Energies, 2021 The dramatic deregulatory reforms in US electricity markets increased competition, resulting in more complex prices compared to other commodities. This paper aims to investigate and compare the overall and time-varying multifractality and efficiency of ...
Haider Ali, Faheem Aslam, Paulo Ferreira
doaj +1 more source
International Journal of Climatology, Volume 41, Issue S1, Page E1531-E1552, January 2021., 2021 A comparison has been performed for Poland using meteorological time series from 35 synoptic stations of the Institute of Meteorology and Water Management (IMGW‐PIB) and the nearest grid points of the Modern‐Era Retrospective Analysis for Research and Applications (MERRA‐2). High similarity of time series coming from those two data sources confirmed by
Magdalena Gos +4 more
wiley +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 This paper proposes a new factor model, which is built upon the marriage of the Fama and French five‐factor model and a long memory factor based on the monthly data of the A‐share market in the Chinese stock market from January 2010 to July 2020. We first examine the explanatory power of the Fama and French five‐factor model.
Yicun Li +4 more
wiley +1 more source