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Recent work of Acharya et al. (NeurIPS 2019) showed how to estimate the entropy of a distribution $\mathcal D$ over an alphabet of size $k$ up to $\pm\epsilon$ additive error by streaming over $(k/\epsilon^3) \cdot…

数据结构与算法 · 计算机科学 2022-05-23 Maryam Aliakbarpour , Andrew McGregor , Jelani Nelson , Erik Waingarten

As the usage of large language models for problems outside of simple text understanding or generation increases, assessing their abilities and limitations becomes crucial. While significant progress has been made in this area over the last…

计算与语言 · 计算机科学 2025-01-14 Mykyta Syromiatnikov , Victoria Ruvinskaya , Anastasiya Troynina

The quality of image encryption is commonly measured by the Shannon entropy over the ciphertext image. However, this measurement does not consider to the randomness of local image blocks and is inappropriate for scrambling based image…

密码学与安全 · 计算机科学 2016-11-27 Yue Wu , Joseph P. Noonan , Sos Agaian

We study how the Shannon entropy of sequences produced by an information source converges to the source's entropy rate. We synthesize several phenomenological approaches to applying information theoretic measures of randomness and memory to…

统计力学 · 物理学 2007-05-23 James P. Crutchfield , David P. Feldman

To address the challenge of quantifying uncertainty in the outputs generated by language models, we propose a novel measure of semantic uncertainty, semantic spectral entropy, that is statistically consistent under mild assumptions. This…

计算与语言 · 计算机科学 2025-05-27 Yi Liu

There is growing interest in studying the languages that emerge when neural agents are jointly trained to solve tasks requiring communication through a discrete channel. We investigate here the information-theoretic complexity of such…

计算与语言 · 计算机科学 2020-06-29 Eugene Kharitonov , Rahma Chaabouni , Diane Bouchacourt , Marco Baroni

We compared entropy for texts written in natural languages (English, Spanish) and artificial languages (computer software) based on a simple expression for the entropy as a function of message length and specific word diversity. Code text…

计算与语言 · 计算机科学 2015-12-03 Gerardo Febres , Klaus Jaffe , Carlos Gershenson

Shannon entropy was defined for probability distributions and then its using was expanded to measure the uncertainty of knowledge for systems with complete information. In this article, it is proposed to extend the using of Shannon entropy…

信息论 · 计算机科学 2017-09-15 Vasile Patrascu

The uniform information density (UID) hypothesis states that humans tend to distribute information roughly evenly across an utterance or discourse. Early evidence in support of the UID hypothesis came from Genzel & Charniak (2002), which…

计算与语言 · 计算机科学 2023-10-19 Vivek Verma , Nicholas Tomlin , Dan Klein

Using the concept of discrete noiseless channels, it was shown by Shannon in A Mathematical Theory of Communication that the ultimate performance of an encoder for a constrained system is limited by the combinatorial capacity of the system…

信息论 · 计算机科学 2008-09-09 Georg Böcherer , Valdemar Cardoso da Rocha , Cecilio Pimentel

The Shannon entropy is used as a basis for applying different lemmas and conjectures concerning the set of gaps between prime numbers G_p , thus estimating several measures of it. The same procedures are applied to artificially created…

综合数学 · 数学 2016-06-28 Arturo Ortiz Tapia , Hans Henrik Støleum

We estimate the $n$-gram entropies of natural language texts in word-length representation and find that these are sensitive to text language and genre. We attribute this sensitivity to changes in the probability distribution of the lengths…

We consider the problem of finite sample corrections for entropy estimation. New estimates of the Shannon entropy are proposed and their systematic error (the bias) is computed analytically. We find that our results cover correction…

统计力学 · 物理学 2009-11-10 Thomas Schürmann

Kolmogorov complexity of a finite binary word reflects both algorithmic structure and the empirical distribution of symbols appearing in the word. Words with symbol frequencies far from one half have smaller combinatorial richness and…

统计计算 · 统计学 2025-12-25 Brani Vidakovic

We revisit the well-studied problem of estimating the Shannon entropy of a probability distribution, now given access to a probability-revealing conditional sampling oracle. In this model, the oracle takes as input the representation of a…

密码学与安全 · 计算机科学 2022-06-03 Priyanka Golia , Brendan Juba , Kuldeep S. Meel

We introduce the problem of \emph{entropy equivalence testing} for probability distributions, a relaxation of the well-studied closeness testing problem, where the distribution testing algorithm is now only required to distinguish, given…

数据结构与算法 · 计算机科学 2026-05-25 Clément L. Canonne , Yash Pote , Jonathan Scarlett , Joy Qiping Yang

Shannon's fundamental bound for perfect secrecy says that the entropy of the secret message cannot be larger than the entropy of the secret key initially shared by the sender and the legitimate receiver. Massey gave an information theoretic…

信息论 · 计算机科学 2016-11-17 Siu-Wai Ho , Terence H. Chan , Alex Grant , Chinthani Uduwerelle

In question-answering tasks, determining when to trust the outputs is crucial to the alignment of large language models (LLMs). Kuhn et al. (2023) introduces semantic entropy as a measure of uncertainty, by incorporating linguistic…

人工智能 · 计算机科学 2025-07-30 Meilin Zhu , Gaojie Jin , Xiaowei Huang , Lijun Zhang

Given a sequence composed of a limit number of characters, we try to "read" it as a "text". This involves to segment the sequence into "words". The difficulty is to distinguish good segmentation from enormous number of random ones.Aiming at…

生物物理 · 物理学 2009-11-06 Bin Wang

In this paper, we present a new multi-scale information content calculation method based on Shannon information (and Shannon entropy). The original method described by Claude E. Shannon and based on the logarithm of the probability of…

信息论 · 计算机科学 2023-05-23 Zsolt Pocze