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The brain-age gap is one of the most investigated risk markers for brain changes across disorders. While the field is progressing towards large-scale models, recently incorporating uncertainty estimates, no model to date provides the…

Topic models, such as latent Dirichlet allocation (LDA), can be useful tools for the statistical analysis of document collections and other discrete data. The LDA model assumes that the words of each document arise from a mixture of topics,…

Applications · Statistics 2009-09-29 David M. Blei , John D. Lafferty

When sample data are governed by an unknown sequence of independent but possibly non-identical distributions, the data-generating process (DGP) in general cannot be perfectly identified from the data. For making decisions facing such…

Theoretical Economics · Economics 2022-05-11 Xiaoyu Cheng

Background: Psychedelic drugs facilitate profound changes in consciousness and have potential to provide insights into the nature of human mental processes and their relation to brain physiology. Yet published scientific literature reflects…

Quantitative Methods · Quantitative Biology 2012-06-05 Jeremy R. Coyle , David E. Presti , Matthew J. Baggott

This article is concerned with automated complexity analysis of term rewrite systems. Since these systems underlie much of declarative programming, time complexity of functions defined by rewrite systems is of particular interest. Among…

Logic in Computer Science · Computer Science 2011-06-02 Nao Hirokawa , Georg Moser

Dialogue act (DA) classification has been studied for the past two decades and has several key applications such as workflow automation and conversation analytics. Researchers have used, to address this problem, various traditional machine…

Computation and Language · Computer Science 2019-08-07 Ozan İrsoy , Rakesh Gosangi , Haimin Zhang , Mu-Hsin Wei , Peter Lund , Duccio Pappadopulo , Brendan Fahy , Neophytos Nephytou , Camilo Ortiz

Accurately assessing a patient's risk of a given event is essential in making informed treatment decisions. One approach is to stratify patients into two or more distinct risk groups with respect to a specific outcome using both clinical…

Methodology · Statistics 2015-03-17 Karen Lostritto , Robert Strawderman , Annette Molinaro

Word clouds became a standard tool for presenting results of natural language processing methods such as topic modelling. They exhibit most important words, where word size is often chosen proportional to the relevance of words within a…

Computation · Statistics 2023-02-14 Peter Winker

For organizing large text corpora topic modeling provides useful tools. A widely used method is Latent Dirichlet Allocation (LDA), a generative probabilistic model which models single texts in a collection of texts as mixtures of latent…

Computation and Language · Computer Science 2020-04-02 Jonas Rieger , Lars Koppers , Carsten Jentsch , Jörg Rahnenführer

Spurious correlations threaten the validity of statistical classifiers. While model accuracy may appear high when the test data is from the same distribution as the training data, it can quickly degrade when the test distribution changes.…

Machine Learning · Computer Science 2020-12-21 Zhao Wang , Aron Culotta

In recent times, more and more people are posting about their mental states across various social media platforms. Leveraging this data, AI-based systems can be developed that help in assessing the mental health of individuals, such as…

Human-Computer Interaction · Computer Science 2024-12-20 Chayan Tank , Shaina Mehta , Sarthak Pol , Vinayak Katoch , Avinash Anand , Raj Jaiswal , Rajiv Ratn Shah

Deep Probabilistic Programming (DPP) allows powerful models based on recursive computation to be learned using efficient deep-learning optimization techniques. Additionally, DPP offers a unified perspective, where inference and learning…

Machine Learning · Computer Science 2022-03-31 Jonathan Warrell , Mark Gerstein

We develop a Gaussian process ("GP") framework for modeling mortality rates and mortality improvement factors. GP regression is a nonparametric, data-driven approach for determining the spatial dependence in mortality rates and jointly…

Methodology · Statistics 2018-04-13 Mike Ludkovski , Jimmy Risk , Howard Zail

We consider models for which it is important, early in processing, to estimate some variables with high precision, but perhaps at relatively low rates of recall. If some variables can be identified with near certainty, then they can be…

Computer Vision and Pattern Recognition · Computer Science 2009-07-03 Andrew Kae , Gary B. Huang , Erik Learned-Miller

Data-driven forecasts of air quality have recently achieved more accurate short-term predictions. Despite their success, most of the current data-driven solutions lack proper quantifications of model uncertainty that communicate how much to…

Machine Learning · Computer Science 2021-12-07 Abdulmajid Murad , Frank Alexander Kraemer , Kerstin Bach , Gavin Taylor

In this paper I present ongoing work on the data-oriented parsing (DOP) model. In previous work, DOP was tested on a cleaned-up set of analyzed part-of-speech strings from the Penn Treebank, achieving excellent test results. This left,…

cmp-lg · Computer Science 2008-02-03 Rens Bod

Depression is the most common psychological disorder and is considered as a leading cause of disability and suicide worldwide. An automated system capable of detecting signs of depression in human speech can contribute to ensuring timely…

Sound · Computer Science 2023-02-21 Mashrura Tasnim , Jekaterina Novikova

Speech datasets for identifying Alzheimer's disease (AD) are generally restricted to participants performing a single task, e.g. describing an image shown to them. As a result, models trained on linguistic features derived from such…

Machine Learning · Computer Science 2018-11-30 Aparna Balagopalan , Jekaterina Novikova , Frank Rudzicz , Marzyeh Ghassemi

When evaluating the performance of automatic speech recognition models, usually word error rate within a certain dataset is used. Special care must be taken in understanding the dataset in order to report realistic performance numbers. We…

Computation and Language · Computer Science 2021-05-21 Aashish Agarwal , Torsten Zesch

Single-channel deep speech enhancement approaches often estimate a single multiplicative mask to extract clean speech without a measure of its accuracy. Instead, in this work, we propose to quantify the uncertainty associated with clean…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-16 Huajian Fang , Timo Gerkmann