scholarly journals Hierarchy in language interpretation: evidence from behavioural experiments and computational modelling

2021 ◽  
pp. 1-20
Author(s):  
Cas W. Coopmans ◽  
Helen de Hoop ◽  
Karthikeya Kaushik ◽  
Peter Hagoort ◽  
Andrea E. Martin
Keyword(s):  
Computational Modelling ◽  
Language Interpretation ◽  
Behavioural Experiments

scholarly journals A lateralised design for the interaction of visual memories and heading representations in navigating ants

2020 ◽  
Author(s):  
Antoine Wystrach ◽  
Florent Le Moël ◽  
Leo Clement ◽  
Sebastian Schwarz
Keyword(s):  
Brain Area ◽  
Computational Modelling ◽  
Motor Command ◽  
Central Complex ◽  
Stage Process ◽  
Celestial Compass ◽  
Left And Right ◽  
Behavioural Experiments ◽  
New Perspective

AbstractThe navigational skills of ants, bees and wasps represent one of the most baffling examples of the powers of minuscule brains. Insects store long-term memories of the visual scenes they experience 1, and they use compass cues to build a robust representation of directions 2,3. We know reasonably well how long-term memories are formed, in a brain area called the Mushroom Bodies (MB) 4–8, as well as how heading representations are formed in another brain area called the Central Complex (CX) 9–12. However, how such memories and heading representations interact to produce powerful navigational behaviours remains unclear 7,13,14. Here we combine behavioural experiments with computational modelling that is strictly based on connectomic data to provide a new perspective on how navigation might be orchestrated in these insects. Our results reveal a lateralised design, where signals about whether to turn left or right are segregated in the left and right hemispheres, respectively. Furthermore, we show that guidance is a two-stage process: the recognition of visual memories – presumably in the MBs – does not directly drive the motor command, but instead updates a “desired heading” – presumably in the CX – which in turn is used to control guidance using celestial compass information. Overall, this circuit enables ants to recognise views independently of their body orientation, and combines terrestrial and celestial cues in a way that produces exceptionally robust navigation.

Discourse Analysis: Contextualism and Reductionism

2014 ◽  
Vol 4 (3) ◽  
pp. 440-447
Author(s):  
Setareh Majidi
Keyword(s):  
Discourse Analysis ◽  
Contextual Factors ◽  
Relevance Theory ◽  
The Past ◽  
Language Interpretation

For the past twenty to thirty years, a good part of the domain of linguistics has been occupied by what has been called discourse analysis. Whereas syntax and semantics are concerned by the sentence and the units from which the sentence is built, discourse analysis claims that interpretation cannot accounted for at the level of the sentence and that a bigger unit, such as discourse should be used to account for language interpretation. We want to show here that discourse is not, in any sense, a well defined object and that, though it is certainly necessary to analyze how a given sequence of sentences is processed and understood, the notion of discourse,  A and related notions such as coherence does not have much to say about it. We rely on epistemological considerations about the necessity of a moderate reductionism and sketch on account of linguistic interpretation which accounts for contextual factors in linguistic interpretation through the notion of utterance (vs. sentence) and a development of Sperber & Wilsons Relevance Theory.

SAMPL7 TrimerTrip Host-Guest Binding Poses and Binding Affinities from Spherical-Coordinates-Biased Simulations

2020 ◽  
Author(s):  
Zhaoxi Sun
Keyword(s):  
Free Energy ◽  
Computational Modelling ◽  
Free Energy Calculations ◽  
Energy Estimates ◽  
Binding Affinities ◽  
Spherical Coordinates ◽  
Collective Variables ◽  
Guest Binding ◽  
Starting Point ◽  
Sampl Challenge

Host-guest binding remains a major challenge in modern computational modelling. The newest 7<sup>th</sup> statistical assessment of the modeling of proteins and ligands (SAMPL) challenge contains a new series of host-guest systems. The TrimerTrip host binds to 16 structurally diverse guests. Previously, we have successfully employed the spherical coordinates as the collective variables coupled with the enhanced sampling technique metadynamics to enhance the sampling of the binding/unbinding event, search for possible binding poses and predict the binding affinities in all three host-guest binding cases of the 6<sup>th</sup> SAMPL challenge. In this work, we employed the same protocol to investigate the TrimerTrip host in the SAMPL7 challenge. As no binding pose is provided by the SAMPL7 host, our simulations initiate from randomly selected configurations and are proceeded long enough to obtain converged free energy estimates and search for possible binding poses. The predicted binding affinities are in good agreement with the experimental reference, and the obtained binding poses serve as a nice starting point for end-point or alchemical free energy calculations.

Pollutants in Organic Chemistry and Medicinal Chemistry Education Laboratory. Experimental and Machine Learning Studies

2020 ◽  
Vol 20 (9) ◽  
pp. 720-730
Author(s):  
Iker Montes-Bageneta ◽  
Urtzi Akesolo ◽  
Sara López ◽  
Maria Merino ◽  
Eneritz Anakabe ◽  
...  
Keyword(s):  
Organic Chemistry ◽  
Machine Learning ◽  
Chemistry Education ◽  
Organic Waste ◽  
Computational Modelling ◽  
University Education ◽  
Academic Factors ◽  
Academic Year ◽  
Statistical Analysis Software

Aims: Computational modelling may help us to detect the more important factors governing this process in order to optimize it. Background: The generation of hazardous organic waste in teaching and research laboratories poses a big problem that universities have to manage. Methods: In this work, we report on the experimental measurement of waste generation on the chemical education laboratories within our department. We measured the waste generated in the teaching laboratories of the Organic Chemistry Department II (UPV/EHU), in the second semester of the 2017/2018 academic year. Likewise, to know the anthropogenic and social factors related to the generation of waste, a questionnaire has been utilized. We focused on all students of Experimentation in Organic Chemistry (EOC) and Organic Chemistry II (OC2) subjects. It helped us to know their prior knowledge about waste, awareness of the problem of separate organic waste and the correct use of the containers. These results, together with the volumetric data, have been analyzed with statistical analysis software. We obtained two Perturbation-Theory Machine Learning (PTML) models including chemical, operational, and academic factors. The dataset analyzed included 6050 cases of laboratory practices vs. practices of reference. Results: These models predict the values of acetone waste with R2 = 0.88 and non-halogenated waste with R2 = 0.91. Conclusion: This work opens a new gate to the implementation of more sustainable techniques and a circular economy with the aim of improving the quality of university education processes.

Bengali geminates

2017 ◽  
Author(s):  
Sandra Kotzor ◽  
Allison Wetterlin ◽  
Aditi Lahiri
Keyword(s):  
Native Speakers ◽  
Lexical Representation ◽  
Real Word ◽  
Behavioural Experiments ◽  
Phonological System

Bengali has a robust medial geminate/singleton contrast across oral stops and nasals in five places of articulation. This chapter presents a synchronic account of the phonological system involving the consonantal length contrast, which supports an asymmetric moraic representation of geminates. Based on these representational assumptions, two EEG and two behavioural experiments were conducted to investigate the processing of this geminate/singleton contrast by Bengali native speakers. The results reveal a processing asymmetry for the duration contrast: the processing of the duration contrast is indeed asymmetric: a geminate mispronunciation is accepted for a singleton real word, while the reverse is not the case. This provides evidence that the lexical representation of the duration contrast must be asymmetric and thus privative rather than equipollent.

Enriched Meanings

2020 ◽  
Author(s):  
Ash Asudeh ◽  
Gianluca Giorgolo
Keyword(s):  
Cognitive Science ◽  
Programming Languages ◽  
Category Theory ◽  
Worst Case ◽  
Disciplinary Boundaries ◽  
Semantics Of Programming Languages ◽  
Basic Meaning ◽  
Language Interpretation ◽  
Major Branch ◽  
Compositional Properties

This book presents a theory of enriched meanings for natural language interpretation. Certain expressions that exhibit complex effects at the semantics/pragmatics boundary live in an enriched meaning space while others live in a more basic meaning space. These basic meanings are mapped to enriched meanings just when required compositionally, which avoids generalizing meanings to the worst case. The theory is captured formally using monads, a concept from category theory. Monads are also prominent in functional programming and have been successfully used in the semantics of programming languages to characterize certain classes of computation. They are used here to model certain challenging linguistic computations at the semantics/pragmatics boundary. Part I presents some background on the semantics/pragmatics boundary, informally presents the theory of enriched meanings, reviews the linguistic phenomena of interest, and provides the necessary background on category theory and monads. Part II provides novel compositional analyses of the following phenomena: conventional implicature, substitution puzzles, and conjunction fallacies. Part III explores the prospects of combining monads, with particular reference to these three cases. The authors show that the compositional properties of monads model linguistic intuitions about these cases particularly well. The book is an interdisciplinary contribution to Cognitive Science: These phenomena cross not just the boundary between semantics and pragmatics, but also disciplinary boundaries between Linguistics, Philosophy and Psychology, three of the major branches of Cognitive Science, and are here analyzed with techniques that are prominent in Computer Science, a fourth major branch. A number of exercises are provided to aid understanding, as well as a set of computational tools (available at the book's website), which also allow readers to develop their own analyses of enriched meanings.

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