نتایج جستجو برای: causality

تعداد نتایج: 51794  

Journal: :Headache: The Journal of Head and Face Pain 2013

Journal: :Physical Review Research 2019

Journal: :Physical Review Letters 2021

Information causality is a physical principle which states that the amount of randomly accessible data over classical communication channel cannot exceed its capacity, even if sender and receiver have access to source nonlocal correlations. This can be used bound nonlocality quantum mechanics without resorting full formalism, with notable example reproducing Tsirelson's Clauser-Horne-Shimony-Ho...

Journal: :تحقیقات اقتصادی 0
حسین اصغرپور دانشیار دانشگاه تبریز، گروه اقتصاد علی مهدیلو دانشجوی دکتری، دانشگاه تبریز، گروه اقتصاد

the relationship between financial development and economic growth in order to give priority to policies that will lead to financial development or addressing other economic priorities to achieve economic growth has attracted the attention of many economics. nonlinear models of causality and causal relationships between variables in the modification of variables in different regimes exist, why ...

2011
Jan Åslund A. Bregon Mattias Krysander Erik Frisk B. Pulido Anibal Bregon Belarmino Pulido

This work is focused on structural approaches to studying diagnosability properties given a system model taking into account, both simultaneously or separately, integral and differential causal interpretations for differential constraints. We develop a model characterization and corresponding algorithms, for studying system diagnosability using a structural decomposition that avoids generating ...

Journal: :J. Artif. Intell. Res. 2012
Kira Radinsky Sagie Davidovich Shaul Markovitch

Given a current news event, we tackle the problem of generating plausible predictions of future events it might cause. We present a new methodology for modeling and predicting such future news events using machine learning and data mining techniques. Our Pundit algorithm generalizes examples of causality pairs to infer a causality predictor. To obtain precisely labeled causality examples, we mi...

2017
Chia-Lin Chang Michael McAleer Marc S. Paolella

An early development in testing for causality (technically, Granger non-causality) in the conditional variance (or volatility) associated with financial returns was the portmanteau statistic for non-causality in the variance of Cheng and Ng (1996). A subsequent development was the Lagrange Multiplier (LM) test of non-causality in the conditional variance by Hafner and Herwartz (2006), who provi...

Journal: :NeuroImage 2013
Qiang Luo Wenlian Lu Wei Cheng Pedro A. Valdes-Sosa Xiaotong Wen Mingzhou Ding Jianfeng Feng

That physiological oscillations of various frequencies are present in fMRI signals is the rule, not the exception. Herein, we propose a novel theoretical framework, spatio-temporal Granger causality, which allows us to more reliably and precisely estimate the Granger causality from experimental datasets possessing time-varying properties caused by physiological oscillations. Within this framewo...

Journal: :Journal of neuroscience methods 2003
Wolfram Hesse Eva Möller Matthias Arnold Bärbel Schack

Understanding of brain functioning requires the investigation of activated cortical networks, in particular the detection of interactions between different cortical sites. Commonly, coherence and correlation are used to describe interrelations between EEG signals. However, on this basis, no statements on causality or the direction of their interrelations are possible. Causality between two sign...

2017
Aditi Kathpalia Nithin Nagaraj

Causality testing, the act of determining cause and effect from measurements, is widely used in physics, climatology, neuroscience, econometrics and other disciplines. As a result, a large number of causality testing methods based on various principles have been developed. Causal relationships in complex systems are typically accompanied by entropic exchanges which are encoded in patterns of dy...

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