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1704 Publications visible to you, out of a total of 1704
The CODI-CRAC 2021 Shared Task on Anaphora, Bridging, and Discourse Deixis in Dialogue

Abstract (Expand)

In this paper, we provide an overview of the CODI-CRAC 2021 Shared-Task: Anaphora Resolution in Dialogue. The shared task focuses on detecting anaphoric relations in different genres of conversations. … Using five conversational datasets, four of which have been newly annotated with a wide range of anaphoric relations: identity, bridging references and discourse deixis, we defined multiple subtasks focusing individually on these key relations. We discuss the evaluation scripts used to assess the system performance on these subtasks, and provide a brief summary of the participating systems and the results obtained across ?? runs from 5 teams, with most submissions achieving significantly better results than our baseline methods.

Authors: Sopan Khosla, Juntao Yu, Ramesh Manuvinakurike, Vincent Ng, Massimo Poesio, Michael Strube, Carolyn Rosé

Date Published: 10th Nov 2021

Publication Type: InProceedings

Proceedings of the 2nd Workshop on Computational Approaches to Discourse, Punta Cana, Dominican Repbulich and Online

Abstract

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Authors: Chloé Braud, Christian Hardmeier, Junyi Jessy Li, Annie Louis, Michael Strube, Amir Zeldes

Date Published: 10th Nov 2021

Publication Type: Proceedings

Large-scale geometry of the saddle connection graph

Abstract

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Authors: Valentina Disarlo, Huiping Pan, Anja Randecker, Robert Tang

Date Published: 1st Nov 2021

Publication Type: Journal

Curvature formulas related to a family of stable Higgs bundles

Abstract

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Authors: Zhi Hu, Pengfei Huang

Date Published: 1st Nov 2021

Publication Type: Journal

Testing the evolution theory of massive binary systems

Abstract

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Authors: L. Mahy, H. Sana, F. Martins, G. Rauw, M. Abdul-Masih, L. A. Almeida, N. Langer, K. Sen, T. Shenar, A. de Koter, S. E. de Mink, C. J. Evans, A. F. J. Moffat, S. Simón-Dı́az, F. R. N. Schneider, R. Barbá, J. S. Clark, M. Fabry, P. Crowther, G. Gräfener, D. J. Lennon, F. Tramper, J. S. Vink

Date Published: 1st Nov 2021

Publication Type: InProceedings

Empirical Numerical Properties of Maximum Likelihood Phylogenetic Inference

Abstract (Expand)

Phylogenetic trees represent hypothetical evolutionary relationships between organisms. Approaches for inferring phylogenetic trees include the Maximum Likelihood (ML) method. This method relies on … numerical optimization routines that use internal numerical thresholds. We analyze the influence of these thresholds on the likelihood scores and runtimes of tree inferences for the ML inference tools RAxML-NG, IQ-Tree, and FastTree. We analyze 22 empirical datasets and show that we can speed up the tree inference in RAxML-NG and IQ-Tree by changing the default values of two such numerical thresholds. Using 15 additional simulated datasets, we show that these changes do not affect the accuracy of the inferred phylogenetic trees. For RAxML-NG, increasing the likelihood thresholds lh_epsilon and spr_lh_epsilon to 10 and 103 respectively results in an average speedup of 1.9 ± 0.6. Increasing the likelihood threshold lh_epsilon in IQ-Tree results in an average speedup of 1.3 ± 0.4. In addition to the numerical analysis, we attempt to predict the difficulty of datasets, with the aim of preventing an unnecessarily large number of tree inferences for datasets that are easy to analyze. We present our prediction experiments and discuss why this task proved to be more challenging than anticipated.

Author: Julia Haag

Date Published: 31st Oct 2021

Publication Type: Master's Thesis

Disentangling the optical AGN and host-galaxy luminosity with a probabilistic flux variation gradient

Abstract

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Authors: N. Gianniotis, F. Pozo Nuñez, K. L. Polsterer

Date Published: 29th Oct 2021

Publication Type: Journal

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