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Generative diffusion models showed high success in many fields with a powerful theoretical background. They convert the data distribution to noise and remove the noise back to obtain a similar distribution. Many existing reviews focused on…

机器学习 · 计算机科学 2024-09-19 Melike Nur Yeğin , Mehmet Fatih Amasyalı

To understand the origin of bursty dynamics in natural and social processes we provide a general analysis framework, in which the temporal process is decomposed into sub-processes and then the bursts in sub-processes, called contextual…

物理与社会 · 物理学 2013-06-21 Hang-Hyun Jo , Raj Kumar Pan , Juan I. Perotti , Kimmo Kaski

When analyzing data from multiple sources, it is often convenient to strike a careful balance between two goals: capturing the heterogeneity of the samples and sharing information across them. We introduce a novel framework to model a…

统计方法学 · 统计学 2026-03-02 Laura D'Angelo , Bernardo Nipoti , Andrea Ongaro

In this work, we present a method to generate probability distributions and classes of probability distributions, which broadens a process of probability distribution construction. In this method, distribution classes are built from…

Automatic question generation can benefit many applications ranging from dialogue systems to reading comprehension. While questions are often asked with respect to long documents, there are many challenges with modeling such long documents.…

计算与语言 · 计算机科学 2019-10-24 Luu Anh Tuan , Darsh J Shah , Regina Barzilay

Class-labeled datasets, particularly those common in scientific domains, are rife with internal structure, yet current class-conditional diffusion models ignore these relationships and implicitly diffuse on all classes in a flat fashion. To…

机器学习 · 计算机科学 2024-02-05 Alex M. Tseng , Max Shen , Tommaso Biancalani , Gabriele Scalia

We investigate statistical properties of a likelihood approach to nonparametric estimation of a singular distribution using deep generative models. More specifically, a deep generative model is used to model high-dimensional data that are…

机器学习 · 统计学 2023-03-29 Minwoo Chae , Dongha Kim , Yongdai Kim , Lizhen Lin

Diffusion models have been successful on a range of conditional generation tasks including molecular design and text-to-image generation. However, these achievements have primarily depended on task-specific conditional training or…

机器学习 · 统计学 2024-11-26 Luhuan Wu , Brian L. Trippe , Christian A. Naesseth , David M. Blei , John P. Cunningham

Writers generally rely on plans or sketches to write long stories, but most current language models generate word by word from left to right. We explore coarse-to-fine models for creating narrative texts of several hundred words, and…

计算与语言 · 计算机科学 2019-06-18 Angela Fan , Mike Lewis , Yann Dauphin

Many complex generative systems use languages to create structured objects. We consider a model of random languages, defined by weighted context-free grammars. As the distribution of grammar weights broadens, a transition is found from a…

无序系统与神经网络 · 物理学 2019-04-03 E. DeGiuli

Diffusion models have become a powerful family of deep generative models, with record-breaking performance in many applications. This paper first gives an overview and derivation of the basic theory of diffusion models, then reviews the…

计算与语言 · 计算机科学 2023-03-15 Yuansong Zhu , Yu Zhao

Generating realistic images from scene graphs asks neural networks to be able to reason about object relationships and compositionality. As a relatively new task, how to properly ensure the generated images comply with scene graphs or how…

计算机视觉与模式识别 · 计算机科学 2019-01-17 Subarna Tripathi , Anahita Bhiwandiwalla , Alexei Bastidas , Hanlin Tang

Generating temporally coherent high fidelity video is an important milestone in generative modeling research. We make progress towards this milestone by proposing a diffusion model for video generation that shows very promising initial…

计算机视觉与模式识别 · 计算机科学 2022-06-24 Jonathan Ho , Tim Salimans , Alexey Gritsenko , William Chan , Mohammad Norouzi , David J. Fleet

Stochastic models for collections of interacting populations have crucial roles in scientific fields such as epidemiology and ecology, yet the standard approach to extending an ordinary differential equation model to a Markov chain does not…

统计方法学 · 统计学 2022-10-04 Ning Ning , Edward L. Ionides

Equipping the probability space with a local Dirichlet form with square field operator $\Gamma$ and generator $A$ allows to improve Monte Carlo computations of expectations, densities, and conditional expectations, as soon as we are able to…

概率论 · 数学 2007-05-23 Nicolas Bouleau

Context modeling is essential to generate coherent and consistent translation for Document-level Neural Machine Translations. The widely used method for document-level translation usually compresses the context information into a…

计算与语言 · 计算机科学 2019-11-22 Zhengxin Yang , Jinchao Zhang , Fandong Meng , Shuhao Gu , Yang Feng , Jie Zhou

Cryptography and simulation of systems require that events of pre-defined probability be generated. This paper presents methods to generate target probability events based on the oblivious transfer protocol and target probabilistic…

密码学与安全 · 计算机科学 2013-02-07 Vaignana Spoorthy Ella

Text generation is a fundamental building block in natural language processing tasks. Existing sequential models performs autoregression directly over the text sequence and have difficulty generating long sentences of complex structures.…

计算与语言 · 计算机科学 2018-08-16 Qipeng Guo , Xipeng Qiu , Xiangyang Xue , Zheng Zhang

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,…

应用统计 · 统计学 2009-09-29 David M. Blei , John D. Lafferty

In formal concept analysis, it is well-known that the number of formal concepts can be exponential in the worst case. To analyze the average case, we introduce a probabilistic model for random formal contexts and prove that the average…

人工智能 · 计算机科学 2021-08-02 Taro Sakurai