LARCA - Laboratori d'Algorísmia Relacional, Complexitat i Aprenentatge
LARCA és un grup de recerca de nivell internacional en temes d'aprenentatge i mineria de dades, anàlisi de dades i lingüística matemàtica. Típicament, abordem els problemes des de principis matemàtics sòlids, usant eines de modelització i tècniques de l'algorísmia, complexitat computacional, teoria d'autòmats, lògica, matemàtica discreta, estadística, i sistemes dinàmics. Estem iniciant
col·laboracions amb empreses i altres institucions per tal d'aplicar les nostres solucions al problemes del món real.
LARCA es un grupo de investigación de nivel internacional en temas de aprendizaje y minería de datos, análisis de datos y lingüística matemática. Típicamente, abordamos los problemas desde principios matemáticos sólidos, usando técnicas de modelización de la algoritmia, la complejidad computacional, teoría de autómatas, lógica, matemática discreta, estadística y sistemas dinámicos. Estamos iniciando colaboraciones con empresas e instituciones para la aplicación de nuestras soluciones a contextos reales.
LARCA is an international research group working on data mining, machine learning, data analysis, and mathematical linguistics. We typically approach problems from sound mathematical principles, using modelling tools and techniques from algorithmics, computational complexity, automata theory, logic, discrete mathematics, statistics, and dynamic systems. We are also starting partnerships with companies and other institutions to apply our solutions to real-world problems.
LARCA is an international research group working on data mining, machine learning, data analysis, and mathematical linguistics. We typically approach problems from sound mathematical principles, using modelling tools and techniques from algorithmics, computational complexity, automata theory, logic, discrete mathematics, statistics, and dynamic systems. We are also starting partnerships with companies and other institutions to apply our solutions to real-world problems.
Collections
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Articles de revista [104]
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Capítols de llibre [12]
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Reports de recerca [36]
Recent Submissions
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Zipf's law of abbreviation as a language universal
(University of Tübingen, 2016)
Conference report
Open AccessWords that are used more frequently tend to be shorter. This statement is known as Zipf’s law of abbreviation. Here we perform the widest investigation of the presence of the law to date. In a sample of 1262 texts and 986 ... -
Long-distance dependencies are not uniquely human
(World Scientific Publishing, 2008)
Conference report
Restricted access - publisher's policyIt is widely assumed that long-distance dependencies between elements are a unique feature of human language. Here we review recent evidence of long-distance correlations in sequences produced by non-human species and ... -
Measuring investment opportunities under uncertainty
(Springer, 2019)
Conference report
Open AccessIn order to make sound economic decisions it is important to measure the possibilities offered by a market in relation to investments. Provided an investment scheme S = (r; R1, . . . , Rn), where r is a lower bound on the ... -
Refining the imprecise meaning of non-determinism in the Web by strategic games
(Springer, 2019)
Conference report
Open AccessNowadays interactions with the World Wide Web are ubiquitous. Users interact through a number of steps consisting of site calls and handling results that can be automatized as orchestrations. Orchestration results have ... -
Portfolio optimization in incomplete markets and price constraints determined by maximum entropy in the mean
(2019-12-12)
Article
Restricted access - publisher's policyA solution to a portfolio optimization problem is always conditioned by constraints on the initial capital and the price of the available market assets. If a risk neutral measure is known, then the price of each asset is ... -
A stronger null hypothesis for crossing dependencies
(2014-12-04)
Article
Open AccessThe syntactic structure of a sentence can be modeled as a tree where vertices are words and edges indicate syntactic dependencies between words. It is well known that those edges normally do not cross when drawn over the ... -
The challenges of statistical patterns of language: the case of Menzerath's law in genomes
(2013-01)
Article
Open AccessThe importance of statistical patterns of language has been debated over decades. Although Zipf's law is perhaps the most popular case, recently, Menzerath's law has begun to be involved. Menzerath's law manifests in ... -
¿Es el habla una señal crítica auto-organizada?
(Universidad Nacional Autónoma de México, 2020-01-01)
Article
Restricted access - publisher's policyA lo largo del siglo XX, los estudios en lingüística cuantitativa han ido mostrando la aparición de leyes potenciales en las lenguas, primero en textos escritos y posteriormente en el habla. Son leyes que parecen ubicuas ... -
A statistical model from information theory to explain Zipf's law of brevity
(Basque Center on Cognition, Brain and Language, 2019)
Conference lecture
Restricted access - publisher's policyBrevity and frequency are two crucial factors in the processes of statistical learning. The compression principle had already been used previously to explain the origin of Zipf’s law for the frequency of words. Here we use ... -
Log-normal distribution in acoustic linguistic units
(Basque Center on Cognition, Brain and Language, 2019)
Conference lecture
Restricted access - publisher's policyIn this work we verify with accuracy that acoustically transcribed durations of linguistic units at several scales (phonemes, words and Breath Groups) comply with log-normal distribution. To do this we have used a very ... -
Linguistic laws in speech: the case of Catalan and Spanish
(2019-11-26)
Article
Open AccessIn this work we consider Glissando Corpus—an oral corpus of Catalan and Spanish—and empirically analyze the presence of the four classical linguistic laws (Zipf’s law, Herdan’s law, Brevity law, and Menzerath–Altmann’s ... -
On the physical origin of linguistic laws and lognormality in speech
(2019-08-21)
Article
Open AccessPhysical manifestations of linguistic units include sources of variability due to factors of speech production which are by definition excluded from counts of linguistic symbols. In this work, we examine whether linguistic ...
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