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Thanks to the tractability of their likelihood, several deep generative models show promise for seemingly straightforward but important applications like anomaly detection, uncertainty estimation, and active learning. However, the…

Machine Learning · Computer Science 2022-01-19 Charline Le Lan , Laurent Dinh

Abstraction is a powerful idea widely used in science, to model, reason and explain the behavior of systems in a more tractable search space, by omitting irrelevant details. While notions of abstraction have matured for deterministic…

Artificial Intelligence · Computer Science 2020-01-14 Vaishak Belle

It was shown that if in Quantum Theory a fundamental length exists and a well-known measurement procedure is used, then the density matrix at the Planck scale cannot be defined in the usual way, because in this case density matrix trace is…

General Relativity and Quantum Cosmology · Physics 2016-08-31 A. E. Shalyt-Margolin , A. Ya. Tregubovich

Probabilistic models help us encode latent structures that both model the data and are ideally also useful for specific downstream tasks. Among these, mixture models and their time-series counterparts, hidden Markov models, identify…

Machine Learning · Computer Science 2021-10-29 Abhishek Sharma , Catherine Zeng , Sanjana Narayanan , Sonali Parbhoo , Finale Doshi-Velez

Word embeddings predict a word from its neighbours by learning small, dense embedding vectors. In practice, this prediction corresponds to a semantic score given to the predicted word (or term weight). We present a novel model that, given a…

Information Retrieval · Computer Science 2019-06-04 Casper Hansen , Christian Hansen , Stephen Alstrup , Jakob Grue Simonsen , Christina Lioma

The spectral representation is an effecient tool to explore electrical properties of material mixtures. It separates the contributions of geometrical topology and intrinsic properties of the constituents in the system. The aim of this paper…

Materials Science · Physics 2007-05-23 Enis Tuncer

The distributed and continuous representations used by neural networks are at odds with representations employed in linguistics, which are typically symbolic. Vector quantization has been proposed as a way to induce discrete neural…

Computation and Language · Computer Science 2021-09-17 Bertrand Higy , Lieke Gelderloos , Afra Alishahi , Grzegorz Chrupała

Word embeddings have gained significant attention as learnable representations of semantic relations between words, and have been shown to improve upon the results of traditional word representations. However, little effort has been devoted…

Information Retrieval · Computer Science 2019-05-23 Gloria Feher , Andreas Spitz , Michael Gertz

Word embeddings provide an unsupervised way to understand differences in word usage between discursive communities. A number of recent papers have focused on identifying words that are used differently by two or more communities. But word…

Computation and Language · Computer Science 2023-02-14 Thyge Enggaard , August Lohse , Morten Axel Pedersen , Sune Lehmann

Normalizing flows are objects used for modeling complicated probability density functions, and have attracted considerable interest in recent years. Many flexible families of normalizing flows have been developed. However, the focus to date…

Methodology · Statistics 2023-01-18 Tin Lok James Ng , Andrew Zammit-Mangion

It is shown that description of a nonpolarized neutron beam by density matrix is contradictory. Density matrix is invariant with respect to choice of quantization axis, while experimental devices can discriminate between different…

General Physics · Physics 2012-04-23 V. K. Ignatovich

In this paper we examine different meaning representations that are commonly used in different natural language applications today and discuss their limits, both in terms of the aspects of the natural language meaning they are modelling and…

Computation and Language · Computer Science 2021-09-13 Simon Dobnik , Robin Cooper , Adam Ek , Bill Noble , Staffan Larsson , Nikolai Ilinykh , Vladislav Maraev , Vidya Somashekarappa

Automatically creating the description of an image using any natural languages sentence like English is a very challenging task. It requires expertise of both image processing as well as natural language processing. This paper discuss about…

Computer Vision and Pattern Recognition · Computer Science 2018-10-03 Parth Shah , Vishvajit Bakarola , Supriya Pati

The histogram method is a powerful non-parametric approach for estimating the probability density function of a continuous variable. But the construction of a histogram, compared to the parametric approaches, demands a large number of…

Machine Learning · Statistics 2015-12-29 Hideaki Kim , Hiroshi Sawada

Energy is an abstract science concept, so the ways that we think and talk about energy rely heavily on ontological metaphors: metaphors for what kind of thing energy is. Two commonly used ontological metaphors for energy are energy as a…

Physics Education · Physics 2014-12-08 Benjamin W. Dreyfus , Ayush Gupta , Edward F. Redish

This work describes the task of metaphoric paraphrase generation, in which we are given a literal sentence and are charged with generating a metaphoric paraphrase. We propose two different models for this task: a lexical replacement…

Computation and Language · Computer Science 2020-03-02 Kevin Stowe , Leonardo Ribeiro , Iryna Gurevych

Distributional word representation methods exploit word co-occurrences to build compact vector encodings of words. While these representations enjoy widespread use in modern natural language processing, it is unclear whether they accurately…

Computation and Language · Computer Science 2017-06-01 Li Lucy , Jon Gauthier

We introduce a simple theoretical model that describes the interaction of light with optical metamaterials in terms of interfering optical plane waves. In this model, a metamaterial is considered to consist of planar arrays of densely…

Optics · Physics 2013-11-25 P. Grahn , A. Shevchenko , M. Kaivola

Matrix syntax is a formal model of syntactic relations in language. The purpose of this paper is to explain its mathematical foundations, for an audience with some formal background. We make an axiomatic presentation, motivating each axiom…

Computation and Language · Computer Science 2019-03-12 Roman Orus , Roger Martin , Juan Uriagereka

Probabilistic models of language understanding are valuable tools for investigating human language use. However, they need to be hand-designed for a particular domain. In contrast, large language models (LLMs) are trained on text that spans…

Computation and Language · Computer Science 2023-05-23 Ben Prystawski , Paul Thibodeau , Christopher Potts , Noah D. Goodman