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Automatic Speech Recognition (ASR) systems have been gaining popularity in the recent years for their widespread usage in smart phones and speakers. Building ASR systems for task-specific scenarios is subject to the availability of…

Computation and Language · Computer Science 2021-10-22 Saurav Jha

Automata admitting at most one accepting run per structure, known as unambiguous automata, find applications in verification of reactive systems as they extend the class of deterministic automata whilst maintaining some of their desirable…

Formal Languages and Automata Theory · Computer Science 2026-03-03 Anton Chernev , Corina Cîrstea , Helle Hvid Hansen , Clemens Kupke

This work attempts to explain the types of computation that neural networks can perform by relating them to automata. We first define what it means for a real-time network with bounded precision to accept a language. A measure of network…

Computation and Language · Computer Science 2021-01-06 William Merrill

In this paper we consider the class of lambda-nondeterministic linear automata as a model of the class of linear languages. As usual in other automata models, lambda-moves do not increase the acceptance power. The main contribution of this…

Formal Languages and Automata Theory · Computer Science 2016-12-01 Benjamín Bedregal

Due to the limitation on computational power of existing computers, the polynomial time does not works for identifying the tractable problems in big data computing. This paper adopts the sublinear time as the new tractable standard to…

Computational Complexity · Computer Science 2019-12-06 Xiangyu Gao , Jianzhong Li , Dongjing Miao , Xianmin Liu

Low-latency sliding window algorithms for regular and context-free languages are studied, where latency refers to the worst-case time spent for a single window update or query. For every regular language $L$ it is shown that there exists a…

Formal Languages and Automata Theory · Computer Science 2022-10-03 Moses Ganardi , Louis Jachiet , Markus Lohrey , Thomas Schwentick

We present two restricted versions of one-tape Turing machines. Both characterize the class of context-free languages. In the first version, proposed by Hibbard in 1967 and called limited automata, each tape cell can be rewritten only in…

Formal Languages and Automata Theory · Computer Science 2015-07-31 Giovanni Pighizzini

The performance of modern language models (LMs) has been improved by chain-of-thought (CoT) reasoning, i.e., the process of generating intermediate results that guide the model towards a final answer. A possible explanation for this…

Computation and Language · Computer Science 2025-01-27 Franz Nowak , Anej Svete , Alexandra Butoi , Ryan Cotterell

While neural methods for text-to-speech (TTS) have shown great advances in modeling multiple speakers, even in zero-shot settings, the amount of data needed for those approaches is generally not feasible for the vast majority of the world's…

Computation and Language · Computer Science 2022-10-25 Florian Lux , Julia Koch , Ngoc Thang Vu

We investigate the minimum cases for realtime probabilistic machines that can define uncountably many languages with bounded error. We show that logarithmic space is enough for realtime PTMs on unary languages. On binary case, we follow the…

Computational Complexity · Computer Science 2017-05-05 Maksims Dimitrijevs , Abuzer Yakaryılmaz

Savitch showed in $1970$ that nondeterministic logspace (NL) is contained in deterministic $\mathcal{O}(\log^2 n)$ space but his algorithm requires quasipolynomial time. The question whether we can have a deterministic algorithm for every…

Computational Complexity · Computer Science 2016-06-16 Vivek Anand T Kallampally , Raghunath Tewari

A condition characterizing the class of regular languages which have several nonisomorphic minimal reversible automata is presented. The condition concerns the structure of the minimum automaton accepting the language under consideration.…

Formal Languages and Automata Theory · Computer Science 2016-11-22 Giovanna J. Lavado , Giovanni Pighizzini , Luca Prigioniero

We introduce layered automata, a subclass of alternating parity automata that generalises deterministic automata. Assuming a consistency property, these automata are history deterministic and 0-1 probabilistic. We show that every…

Formal Languages and Automata Theory · Computer Science 2026-01-23 Antonio Casares , Christof Löding , Igor Walukiewicz

In this paper, we consider Turing machines based on unsharp quantum logic. For a lattice-ordered quantum multiple-valued (MV) algebra E, we introduce E-valued non-deterministic Turing machines (ENTMs) and E-valued deterministic Turing…

Logic in Computer Science · Computer Science 2012-10-04 Yun Shang , Xian Lu , Ruqian Lu

Language Models (LMs) such as BERT, have been shown to perform well on the task of identifying Named Entities (NE) in text. A BERT LM is typically used as a classifier to classify individual tokens in the input text, or to classify spans of…

Computation and Language · Computer Science 2024-03-04 Edward Whittaker , Ikuo Kitagishi

Trained on the large corpus, pre-trained language models (PLMs) can capture different levels of concepts in context and hence generate universal language representations. They can benefit multiple downstream natural language processing…

Computation and Language · Computer Science 2021-10-15 Nankai Lin , Yingwen Fu , Chuwei Chen , Ziyu Yang , Shengyi Jiang

We investigate the correspondence between the time and space recognition complexity of languages. For this purpose, we will code the long-continued computations of deterministic two-tape Turing machines by the relatively short-length…

Computational Complexity · Computer Science 2024-12-24 Ivan V. Latkin

We show that for any monoid M, the family of languages accepted by M-automata (or equivalently, generated by regular valence grammars over M) is completely determined by that part of M which lies outside the maximal ideal. Hence, every such…

Rings and Algebras · Mathematics 2007-08-08 Elaine Render , Mark Kambites

The notion of Reactive Turing machine (RTM) was proposed as an orthogonal extension of Turing machines with interaction. RTMs are used to define the notion of executable transition system in the same way as Turing machines are used to…

Logic in Computer Science · Computer Science 2017-02-21 Bas Luttik , Fei Yang

The store language of a machine of some arbitrary type is the set of all store configurations (state plus store contents but not the input) that can appear in an accepting computation. New algorithms and characterizations of store languages…

Formal Languages and Automata Theory · Computer Science 2020-10-02 Oscar H. Ibarra , Ian McQuillan