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Evaluating L2 speech intelligibility is crucial for effective computer-assisted language learning (CALL). Conventional ASR-based methods often focus on native-likeness, which may fail to capture the actual intelligibility perceived by human…

音频与语音处理 · 电气工程与系统科学 2025-06-02 Haopeng Geng , Daisuke Saito , Nobuaki Minematsu

The size and structure of spatial molecular and atomic clustering can significantly impact material properties and is therefore important to accurately quantify. Ripley's K-function (K(r)), a measure of spatial correlation, can be used to…

材料科学 · 物理学 2020-11-26 Galen B. Vincent , Andrew P. Proudian , Jeramy D. Zimmerman

Speaker embeddings (x-vectors) extracted from very short segments of speech have recently been shown to give competitive performance in speaker diarization. We generalize this recipe by extracting from each speech segment, in parallel with…

音频与语音处理 · 电气工程与系统科学 2020-11-09 Anna Silnova , Niko Brümmer , Johan Rohdin , Themos Stafylakis , Lukáš Burget

Speaker diarisation systems often cluster audio segments using speaker embeddings such as i-vectors and d-vectors. Since different types of embeddings are often complementary, this paper proposes a generic framework to improve performance…

计算与语言 · 计算机科学 2019-02-11 Guangzhi Sun , Chao Zhang , Phil Woodland

K-means algorithm is a very popular clustering algorithm which is famous for its simplicity. Distance measure plays a very important rule on the performance of this algorithm. We have different distance measure techniques available. But…

机器学习 · 计算机科学 2014-05-30 Mr. Dibya Jyoti Bora , Dr. Anil Kumar Gupta

The deployment of large language models (LLMs) is often hindered by the extensive memory requirements of the Key-Value (KV) cache, especially as context lengths increase. Existing approaches to reduce the KV cache size involve either…

计算与语言 · 计算机科学 2024-11-05 Alessio Devoto , Yu Zhao , Simone Scardapane , Pasquale Minervini

In this paper we formulate in general terms an approach to prove strong consistency of the Empirical Risk Minimisation inductive principle applied to the prototype or distance based clustering. This approach was motivated by the Divisive…

机器学习 · 统计学 2010-04-20 Vladimir Nikulin , Geoffrey J. McLachlan

We study the fundamental and timely problem of learning long sequences in autoregressive modeling and next-token prediction under model misspecification, measured by the joint Kullback--Leibler (KL) divergence. Our goal is to characterize…

机器学习 · 计算机科学 2026-05-13 Yunbei Xu , Yuzhe Yuan , Ruohan Zhan

Agglomerative hierarchical clustering (AHC) requires only the similarity between objects to be known. This is attractive when clustering signals of varying length, such as speech, which are not readily represented in fixed-dimensional…

机器学习 · 计算机科学 2018-10-31 Lerato Lerato , Thomas Niesler

Deep learning models have become widely adopted in various domains, but their performance heavily relies on a vast amount of data. Datasets often contain a large number of irrelevant or redundant samples, which can lead to computational…

音频与语音处理 · 电气工程与系统科学 2023-09-22 Boris Bergsma , Marta Brzezinska , Oleg V. Yazyev , Milos Cernak

Speaker diarization determines who spoke and when? in an audio stream. In this study, we propose a model-based approach for robust speaker clustering using i-vectors. The ivectors extracted from different segments of same speaker are…

声音 · 计算机科学 2019-07-15 Harishchandra Dubey , Abhijeet Sangwan , John Hansen

This paper establishes asymptotic results for the maximum likelihood and restricted maximum likelihood (REML) estimators of the parameters in the nested error regression model for clustered data when both of the number of independent…

统计理论 · 数学 2021-01-25 Ziyang Lyu , A. H. Welsh

The state-of-art approach to speaker verification involves the extraction of discriminative embeddings like x-vectors followed by a generative model back-end using a probabilistic linear discriminant analysis (PLDA). In this paper, we…

音频与语音处理 · 电气工程与系统科学 2020-02-10 Shreyas Ramoji , Prashant Krishnan , Prachi Singh , Sriram Ganapathy

Automatic pronunciation evaluation plays an important role in pronunciation training and second language education. This field draws heavily on concepts from automatic speech recognition (ASR) to quantify how close the pronunciation of…

音频与语音处理 · 电气工程与系统科学 2018-07-06 Ming Tu , Anna Grabek , Julie Liss , Visar Berisha

In this paper, we consider the problem of improving the inference latency of language model-based dense retrieval systems by introducing structural compression and model size asymmetry between the context and query encoders. First, we…

计算与语言 · 计算机科学 2023-06-05 Daniel Campos , Alessandro Magnani , ChengXiang Zhai

Measuring similarity between two objects is the core operation in existing clustering algorithms in grouping similar objects into clusters. This paper introduces a new similarity measure called point-set kernel which computes the similarity…

机器学习 · 计算机科学 2022-01-07 Kai Ming Ting , Jonathan R. Wells , Ye Zhu

We present a general statistical framework for describing the effect of sample variance in the number counts of virialized objects and examine its effect on cosmological parameter estimation. Specifically, we consider effects of sample…

天体物理学 · 物理学 2010-04-06 Wayne Hu , Andrey V. Kravtsov

Distance-based clustering and classification are widely used in various fields to group mixed numeric and categorical data. In many algorithms, a predefined distance measurement is used to cluster data points based on their dissimilarity.…

机器学习 · 计算机科学 2024-10-14 Jesse S. Ghashti , John R. J. Thompson

When comparing speech sounds across languages, scholars often make use of feature representations of individual sounds in order to determine fine-grained sound similarities. Although binary feature systems for large numbers of speech sounds…

计算与语言 · 计算机科学 2024-05-08 Arne Rubehn , Jessica Nieder , Robert Forkel , Johann-Mattis List

We consider the problem of clustering noisy finite-length observations of stationary ergodic random processes according to their nonparametric generative models without prior knowledge of the model statistics and the number of generative…

机器学习 · 统计学 2016-11-18 Michael Tschannen , Helmut Bölcskei