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Recently, topic-grounded dialogue system has attracted significant attention due to its effectiveness in predicting the next topic to yield better responses via the historical context and given topic sequence. However, almost all existing…

Computation and Language · Computer Science 2022-10-18 Xiaofei Wen , Wei Wei , Xian-Ling Mao

In this paper, we present a novel approach to perform deep neural networks layer-wise weight initialization using Linear Discriminant Analysis (LDA). Typically, the weights of a deep neural network are initialized with: random values,…

Computer Vision and Pattern Recognition · Computer Science 2017-11-27 Michele Alberti , Mathias Seuret , Vinaychandran Pondenkandath , Rolf Ingold , Marcus Liwicki

Compositional Data Analysis (CoDa) has gained popularity in recent years. This type of data consists of values from disjoint categories that sum up to a constant. Both Dirichlet regression and logistic-normal regression have become popular…

Methodology · Statistics 2024-06-25 Joaquín Martínez-Minaya , Haavard Rue

Data allocation plays a critical role in federated large language model (LLM) and small language models (SLMs) reasoning collaboration. Nevertheless, existing data allocation methods fail to address an under-explored challenge in…

Artificial Intelligence · Computer Science 2026-02-24 Wei Guo , Siyuan Lu , Xiangdong Ran , Yiqi Tong , Yikun Ban , Zelong Xu , Jing Fan , Zixuan Huang , Xiao Zhang , Zhaojun Hu , Fuzhen Zhuang

This paper is concerned with the reliable inference of optimal tree-approximations to the dependency structure of an unknown distribution generating data. The traditional approach to the problem measures the dependency strength between…

Machine Learning · Computer Science 2007-07-16 Marco Zaffalon , Marcus Hutter

This paper presents an algorithm for the unsupervised learning of latent variable models from unlabeled sets of data. We base our technique on spectral decomposition, providing a technique that proves to be robust both in theory and in…

Machine Learning · Statistics 2017-04-05 Matteo Ruffini , Marta Casanellas , Ricard Gavaldà

Generative recommendation represents each item as a semantic ID, i.e., a sequence of discrete tokens, and generates the next item through autoregressive decoding. While effective, existing autoregressive models face two intrinsic…

Information Retrieval · Computer Science 2025-11-12 Teng Shi , Chenglei Shen , Weijie Yu , Shen Nie , Chongxuan Li , Xiao Zhang , Ming He , Yan Han , Jun Xu

We propose the supervised hierarchical Dirichlet process (sHDP), a nonparametric generative model for the joint distribution of a group of observations and a response variable directly associated with that whole group. We compare the sHDP…

Machine Learning · Statistics 2014-12-18 Andrew M. Dai , Amos J. Storkey

Using the 6,638 case descriptions of societal impact submitted for evaluation in the Research Excellence Framework (REF 2014), we replicate the topic model (Latent Dirichlet Allocation or LDA) made in this context and compare the results…

Computation and Language · Computer Science 2018-06-05 Tobias Hecking , Loet Leydesdorff

The rapid growth of large language model (LLM) services imposes increasing demands on distributed GPU inference infrastructure. Most existing scheduling systems follow a reactive paradigm, relying solely on the current system state to make…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-09-17 Chengze Du , Zhiwei Yu , Heng Xu , Haojie Wang , Bo liu , Jialong Li

The problem of searching for experts in a given academic field is hugely important in both industry and academia. We study exactly this issue with respect to a database of authors and their publications. The idea is to use Latent Semantic…

Social and Information Networks · Computer Science 2013-11-26 Charanpal Dhanjal , Stéphan Clémençon

Controlled generation imposes sequence-level constraints (syntax, style, safety) that depend on future tokens, making exact conditioning of an autoregressive LM intractable. Tractable surrogates such as HMMs can approximate continuation…

Computation and Language · Computer Science 2026-02-11 Gwen Yidou-Weng , Ian Li , Anji Liu , Oliver Broadrick , Yuchen Cui , Guy Van den Broeck , Benjie Wang

Stochastic variational inference (SVI) is emerging as the most promising candidate for scaling inference in Bayesian probabilistic models to large datasets. However, the performance of these methods has been assessed primarily in the…

Machine Learning · Statistics 2015-06-29 Amar Shah , David A. Knowles , Zoubin Ghahramani

We introduce a novel approach for estimating Latent Dirichlet Allocation (LDA) parameters from collapsed Gibbs samples (CGS), by leveraging the full conditional distributions over the latent variable assignments to efficiently average over…

Machine Learning · Statistics 2017-04-12 Yannis Papanikolaou , James R. Foulds , Timothy N. Rubin , Grigorios Tsoumakas

We define the beta diffusion tree, a random tree structure with a set of leaves that defines a collection of overlapping subsets of objects, known as a feature allocation. A generative process for the tree structure is defined in terms of…

Machine Learning · Statistics 2015-04-06 Creighton Heaukulani , David A. Knowles , Zoubin Ghahramani

Contention tree algorithm is initially invented as a solution to improve the stable throughput problem of Slotted ALOHA in multiple access schemes. Even though the throughput is stabilized in tree algorithms, the delay of requests may grow…

Information Theory · Computer Science 2017-08-01 Murat Gürsu , Alberto Martínez Alba , Wolfgang Kellerer

Topic models such as Latent Dirichlet Allocation (LDA) have been widely used in information retrieval for tasks ranging from smoothing and feedback methods to tools for exploratory search and discovery. However, classical methods for…

Distributed, Parallel, and Cluster Computing · Computer Science 2017-06-20 Rolf Jagerman , Carsten Eickhoff , Maarten de Rijke

Supervised topic models utilize document's side information for discovering predictive low dimensional representations of documents. Existing models apply the likelihood-based estimation. In this paper, we present a general framework of…

Machine Learning · Statistics 2013-04-09 Jun Zhu , Amr Ahmed , Eric P. Xing

Topic modeling has found wide application in many problems where latent structures of the data are crucial for typical inference tasks. When applying a topic model, a relatively standard pre-processing step is to first build a vocabulary of…

Computer Vision and Pattern Recognition · Computer Science 2020-01-17 Yuzhen Ding , Baoxin Li

The tremendous growth of social media content on the Internet has inspired the development of the text analytics to understand and solve real-life problems. Leveraging statistical topic modelling helps researchers and practitioners in…

Social and Information Networks · Computer Science 2016-08-09 Marina Sokolova , Kanyi Huang , Stan Matwin , Joshua Ramisch , Vera Sazonova , Renee Black , Chris Orwa , Sidney Ochieng , Nanjira Sambuli