Results 11 to 20 of about 13,606,645 (327)
Language Time Series Analysis [PDF]
Physica A: Statistical Mechanics and its Applications, 2006 We use the Detrended Fluctuation Analysis (DFA) and the Grassberger-Proccacia analysis (GP) methods in order to study language characteristics. Despite that we construct our signals using only word lengths or word frequencies, excluding in this way huge ...
Abrams +41 more
core +4 more sources
TimesNet: Temporal 2D-Variation Modeling for General Time Series Analysis [PDF]
International Conference on Learning Representations, 2022 Time series analysis is of immense importance in extensive applications, such as weather forecasting, anomaly detection, and action recognition. This paper focuses on temporal variation modeling, which is the common key problem of extensive analysis ...
Haixu Wu +5 more
semanticscholar +1 more source
Self-Supervised Learning for Time Series Analysis: Taxonomy, Progress, and Prospects [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2023 Self-supervised learning (SSL) has recently achieved impressive performance on various time series tasks. The most prominent advantage of SSL is that it reduces the dependence on labeled data.
Kexin Zhang +10 more
semanticscholar +1 more source
Trend analysis of the airborne fraction and sink rate of anthropogenically released CO2 [PDF]
Biogeosciences, 2019 Is the fraction of anthropogenically released CO2 that remains in the atmosphere (the airborne fraction) increasing? Is the rate at which the ocean and land sinks take up CO2 from the atmosphere decreasing?
M. Bennedsen +5 more
doaj +1 more source
The Role of Low Temperature Waste Heat Recovery in Achieving 2050 Goals: A Policy Positioning Paper
Energies, 2020 Urban waste heat recovery, in which low temperature heat from urban sources is recovered for use in a district heat network, has a great deal of potential in helping to achieve 2050 climate goals.
Edward Wheatcroft +4 more
doaj +1 more source
Investor sentiment and foreign financial flows: Evidence from South Africa [PDF]
Zbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu, 2019 Foreign financial flows to emerging markets have increasingly become important following the opening of financial markets globally. These financial flows are a function of a country’s fundamentals related to future productivity.
Hilary Tinotenda Muguto +2 more
doaj +1 more source
Econometrics, 2022 We construct a parsimonious test of constancy of the correlation matrix in the multivariate conditional correlation GARCH model, where the GARCH equations are time-varying. The alternative to constancy is that the correlations change deterministically as
Jian Kang +4 more
doaj +1 more source
A Three-Stage Nonparametric Kernel-Based Time Series Model Based on Fuzzy Data
Mathematics, 2023 In this paper, a nonlinear time series model is developed for the case when the underlying time series data are reported by LR fuzzy numbers. To this end, we present a three-stage nonparametric kernel-based estimation procedure for the center as well as ...
Gholamreza Hesamian +2 more
doaj +1 more source
Efficient Bayesian inference for natural time series using ARFIMA processes [PDF]
Nonlinear Processes in Geophysics, 2015 Many geophysical quantities, such as atmospheric temperature, water levels in rivers, and wind speeds, have shown evidence of long memory (LM). LM implies that these quantities experience non-trivial temporal memory, which potentially not only enhances ...
T. Graves +3 more
doaj +1 more source