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Spectral Statistics of Sample Block Correlation Matrices [PDF]

open access: greenThe Annals of Statistics, 2022
A fundamental concept in multivariate statistics, sample correlation matrix, is often used to infer the correlation/dependence structure among random variables, when the population mean and covariance are unknown. A natural block extension of it, {\it sample block correlation matrix}, is proposed to take on the same role, when random variables are ...
Zhigang Bao   +3 more
openalex   +3 more sources

Statistics of blocks in k-divisible non-crossing partitions [PDF]

open access: greenThe Electronic Journal of Combinatorics, 2012
We derive a formula for the expected number of blocks of a given size from a non-crossing partition chosen uniformly at random. Moreover, we refine this result subject to the restriction of having a number of blocks given.Furthermore, we generalize to $k$-divisible partitions.
Octavio Arizmendi
openalex   +5 more sources

Block Statistics in Subcritical Graph Classes

open access: green, 2020
© Dimbinaina Ralaivaosaona, Clément Requilé, and Stephan Wagner; licensed under Creative Commons License CC ...
Dimbinaina Ralaivaosaona   +2 more
openalex   +6 more sources

$K$ block set partition patterns and statistics [PDF]

open access: green, 2020
A set partition $ $ of $[n]=\{1,\cdots ,n\}$ contains another set partition $ $ if a standardized restriction of $ $ to a subset $S\subseteq[n]$ is equivalent to $ $. Otherwise, $ $ avoids $ $. Sagan and Goyt have determined the cardinality of the avoidance classes for all sets of patterns on partitions of $[3]$.
Amrita Acharyya   +2 more
openalex   +3 more sources

Block-Based Statistics for Robust Non-parametric Morphometry

open access: green, 2015
Automated algorithms designed for comparison of medical images are generally dependent on a sufficiently large dataset and highly accurate registration as they implicitly assume that the comparison is being made across a set of images with locally matching structures.
Geng Chen   +6 more
openalex   +5 more sources

Real-time detection of WeChat moments interface blocking behavior and generation of generational user personas based on YOLOv5 [PDF]

open access: yesScientific Reports
With the continuous expansion of user scale on social media platforms, WeChat Moments, as a core social scene for Chinese users, has become a key issue in privacy management and user experience optimization due to the dynamic monitoring of interface ...
Yiguo Yu, Ye Wang, Ruixiang Liu
doaj   +2 more sources

Possible Concussions Related to a Direct Head Kick Among College Taekwondo Athletes [PDF]

open access: yes운동과학, 2022
PURPOSE Executing a head kick (HK) in sparring-taekwondo (S-TKD) is a common, legal move and is promoted by competition rules by awarding higher points.
Hye-Jin Kim, Jae-Ok Koh
doaj   +1 more source

Arterial covered stent used in resection of complex carotid body tumor: a single-center retrospective study [PDF]

open access: yesWaike lilun yu shijian, 2022
Objective To evaluate arterial covered stent used in the resection of complex carotid body tumor (CBT) and postoperative adverse events. Methods Twelve patients with CBT Shamblin type Ⅱ 3 cases and type Ⅲ 9 cases from 2018 to 2020 who ...
YANG Shaofei, YANG Guanghua, PU Jiaxi, LU Minhao, ZHAO Zhiqing, ZHAO Bin
doaj   +1 more source

Forward and backward blocking in statistical learning [PDF]

open access: yesPLOS ONE, 2022
AbstractPrediction errors have a prominent role in many forms of learning. For example, in reinforcement learning, agents learn by updating the association between states and outcomes as a function of the prediction error elicited by the event. One paradigm often used to study error-driven learning is blocking.
İlayda Nazlı   +3 more
openaire   +4 more sources

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