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The statistical properties of the density map (DM) approach to counting microbiological objects on images are studied in detail. The DM is given by U$^2$-Net. Two statistical methods for deep neural networks are utilized: the bootstrap and…

计算机视觉与模式识别 · 计算机科学 2022-07-07 Krzysztof M. Graczyk , Jaroslaw Pawlowski , Sylwia Majchrowska , Tomasz Golan

We perform a systematic analysis of the quality of fit of the stochastic block model (SBM) for 275 empirical networks spanning a wide range of domains and orders of size magnitude. We employ posterior predictive model checking as a…

物理与社会 · 物理学 2022-06-01 Felipe Vaca-Ramírez , Tiago P. Peixoto

Understanding complex systems by inferring trajectories from sparse sample snapshots is a fundamental challenge in a wide range of domains, e.g., single-cell biology, meteorology, and economics. Despite advancements in Bridge and Flow…

The stochastic block model (SBM) is a fundamental tool for community detection in networks, yet the finite-sample performance of inference methods remains underexplored. We evaluate key algorithms-spectral methods, variational inference,…

社会与信息网络 · 计算机科学 2024-12-06 Tianjun Ke , Zhiyu Xu

We propose a novel deep neural network (DNN) based approximation architecture to learn estimates of measurements. We detail an algorithm that enables training of the DNN. The DNN estimator only uses measurements, if and when they are…

机器学习 · 计算机科学 2022-09-13 Shivangi Agarwal , Sanjit K. Kaul , Saket Anand , P. B. Sujit

Continuous-time Bayesian Networks (CTBNs) represent a compact yet powerful framework for understanding multivariate time-series data. Given complete data, parameters and structure can be estimated efficiently in closed-form. However, if…

机器学习 · 统计学 2019-11-04 Dominik Linzner , Michael Schmidt , Heinz Koeppl

This paper introduces a new framework of fast and efficient sensing matrices for practical compressive sensing, called Structurally Random Matrix (SRM). In the proposed framework, we pre-randomize a sensing signal by scrambling its samples…

信息论 · 计算机科学 2015-05-28 Thong T. Do , Lu Gan , Nam H. Nguyen , Trac D. Tran

With the advancement of sensing and communication in power networks, high-frequency real-time data from a power network can be used as a resource to develop better monitoring capabilities. In this work, a systematic approach based on…

系统与控制 · 电气工程与系统科学 2020-03-12 Subhrajit Sinha , Sai Pushpak Nandanoori , Enoch Yeung

In this paper, we propose the Deep Structured self-Driving Network (DSDNet), which performs object detection, motion prediction, and motion planning with a single neural network. Towards this goal, we develop a deep structured energy based…

计算机视觉与模式识别 · 计算机科学 2020-08-14 Wenyuan Zeng , Shenlong Wang , Renjie Liao , Yun Chen , Bin Yang , Raquel Urtasun

An antithetical concept, adaptive symmetry, to conservative symmetry in physics is proposed to understand the deep neural networks (DNNs). It characterizes the invariance of variance, where a biotic system explores different pathways of…

机器学习 · 计算机科学 2022-01-21 Shawn W. M. Li

Short-term traffic forecasting based on deep learning methods, especially long short-term memory (LSTM) neural networks, has received much attention in recent years. However, the potential of deep learning methods in traffic forecasting has…

机器学习 · 计算机科学 2019-11-26 Zhiyong Cui , Ruimin Ke , Ziyuan Pu , Yinhai Wang

Network data are often sampled with auxiliary information or collected through the observation of a complex system over time, leading to multiple network snapshots indexed by a continuous variable. Many methods in statistical network…

统计方法学 · 统计学 2024-07-16 Peter W. MacDonald , Elizaveta Levina , Ji Zhu

Dynamic Mode Decomposition (DMD) and its variants, such as extended DMD (EDMD), are broadly used to fit simple linear models to dynamical systems known from observable data. As DMD methods work well in several situations but perform poorly…

动力系统 · 数学 2024-08-06 George Haller , Bálint Kaszás

Performing multiple experiments is common when learning internal mechanisms of complex systems. These experiments can include perturbations to parameters or external disturbances. A challenging problem is to efficiently incorporate all…

系统与控制 · 计算机科学 2020-08-25 Zuogong Yue , Johan Thunberg , Wei Pan , Lennart Ljung , Jorge Goncalves

We consider a blind identification problem in which we aim to recover a statistical model of a network without knowledge of the network's edges, but based solely on nodal observations of a certain process. More concretely, we focus on…

机器学习 · 计算机科学 2020-05-08 Michael T. Schaub , Santiago Segarra , John N. Tsitsiklis

The deep Boltzmann machine (DBM) has been an important development in the quest for powerful "deep" probabilistic models. To date, simultaneous or joint training of all layers of the DBM has been largely unsuccessful with existing training…

神经与进化计算 · 计算机科学 2012-03-21 Guillaume Desjardins , Aaron Courville , Yoshua Bengio

Traffic Matrix estimation has always caught attention from researchers for better network management and future planning. With the advent of high traffic loads due to Cloud Computing platforms and Software Defined Networking based tunable…

网络与互联网体系结构 · 计算机科学 2018-11-07 Sameer Qazi , Syed Muhammad Atif , Muhammad Bilal Kadri

We propose employing a high-dimensional generalized method of moments (GMM) estimator, regularized for dimension reduction and subsequently debiased to correct for shrinkage bias (referred to as a debiased-regularized estimator), for…

计量经济学 · 经济学 2025-07-03 Victor Chernozhukov , Chen Huang , Weining Wang

Identifying a coupled dynamical system out of many plausible candidates, each of which could serve as the underlying generator of some observed measurements, is a profoundly ill posed problem that commonly arises when modelling real world…

神经元与认知 · 定量生物学 2019-09-17 Amirhossein Jafarian , Peter Zeidman , Vladimir Litvak , Karl Friston

This paper investigates a fully distributed cooperation scheme for networked mobile manipulators. To achieve cooperative task allocation in a distributed way, an adaptation-based estimation law is established for each robotic agent to…

机器人学 · 计算机科学 2020-01-31 Yi Ren , Sandra Hirche