Quantifying predictability of sequential recommendation via logical constraints

E Xu, Z Yu, N Li, H Cui, L Yao, B Guo - Frontiers of Computer Science, 2023 - Springer
The sequential recommendation is a compelling technology for predicting users' next
interaction via their historical behaviors. Prior studies have proposed various methods to …

On predictability of time series

P Xu, L Yin, Z Yue, T Zhou - Physica A: Statistical Mechanics and its …, 2019 - Elsevier
The method to estimate the predictability of human mobility was proposed in Song et
al.(2010), which is extensively followed in exploring the predictability of disparate time …

Network analysis of the Shanghai stock exchange based on partial mutual information

T You, P Fiedor, A Hołda - Journal of Risk and Financial Management, 2015 - mdpi.com
Analyzing social systems, particularly financial markets, using a complex network approach
has become one of the most popular fields within econophysics. A similar trend is currently …

Characterizing complexity changes in Chinese stock markets by permutation entropy

Y Hou, F Liu, J Gao, C Cheng, C Song - Entropy, 2017 - mdpi.com
Financial time series analyses have played an important role in developing some of the
fundamental economic theories. However, many of the published analyses of financial time …

Upper bound on the predictability of rating prediction in recommender systems

E Xu, K Zhao, Z Yu, H Wang, S Ren, H Cui… - Information Processing …, 2025 - Elsevier
The task of rating prediction has undergone extensive scrutiny, employing diverse modeling
approaches to enhance accuracy. However, it remains uncertain whether a maximum …

Nonlinearity in stock networks

D Hartman, J Hlinka - Chaos: An Interdisciplinary Journal of Nonlinear …, 2018 - pubs.aip.org
Stock networks, constructed from stock price time series, are a well-established tool for the
characterization of complex behavior in stock markets. Following Mantegna's seminal paper …

Complexity changes in the US and China's stock markets: Differences, causes, and wider social implications

J Gao, Y Hou, F Fan, F Liu - Entropy, 2020 - mdpi.com
How different are the emerging and the well-developed stock markets in terms of efficiency?
To gain insights into this question, we compared an important emerging market, the Chinese …

Information-theoretic approach to lead-lag effect on financial markets

P Fiedor - The European Physical Journal B, 2014 - Springer
Recently the interest of researchers has shifted from the analysis of synchronous
relationships of financial instruments to the analysis of more meaningful asynchronous …

The Predictability of Stock Price: Empirical Study on Tick Data in Chinese Stock Market

Y Chen, X Xu, T Lan, S Zhang - Big Data Research, 2024 - Elsevier
Whether or not stocks are predictable has been a topic of concern for decades. The efficient
market hypothesis (EMH) says that it is difficult for investors to make extra profits by …

Time-dependent complexity measurement of causality in international equity markets: A spatial approach

S Lahmiri, S Bekiros, C Avdoulas - Chaos, solitons & fractals, 2018 - Elsevier
A nonlinear temporal complexity approach is proposed in order to properly model the
evolution of randomness, self-similarity and information transmission for thirty-four …