Analyzing Visual Mappings of Traditional and Alternative Music Notation

In this paper, we postulate that combining the domains of information visualization and music studies paves the ground for a more structured analysis of the design space of music notation, enabling the creation of alternative music notations that are tailored to different users and their tasks. Hence, we discuss the instantiation of a design and visualization pipeline for music notation that follows a structured approach, based on the fundamental concepts of information and data visualization. This enables practitioners and researchers of digital humanities and information visualization, alike, to conceptualize, create, and analyze novel music notation methods. Based on the analysis of relevant stakeholders and their usage of music notation as a mean of communication, we identify a set of relevant features typically encoded in different annotations and encodings, as used by interpreters, performers, and readers of music. We analyze the visual mappings of musical dimensions for varying notation methods to highlight gaps and frequent usages of encodings, visual channels, and Gestalt laws. This detailed analysis leads us to the conclusion that such an under-researched area in information visualization holds the potential for fundamental research. This paper discusses possible research opportunities, open challenges, and arguments that can be pursued in the process of analyzing, improving, or rethinking existing music notation systems and techniques.Comment: 5 pages including references, 3rd Workshop on Visualization for the Digital Humanities, Vis4DH, IEEE Vis 201

Stress Testing German Industry Sectors: Results from a Vine Copula Based Quantile Regression

Measuring interdependence between probabilities of default (PDs) in different industry sectors of an economy plays a crucial role in financial stress testing. Thereby, regression approaches may be employed to model the impact of stressed industry sectors as covariates on other response sectors. We identify vine copula based quantile regression as an eligible tool for conducting such stress tests as this method has good robustness properties, takes into account potential nonlinearities of conditional quantile functions and ensures that no quantile crossing effects occur. We illustrate its performance by a data set of sector specific PDs for the German economy. Empirical results are provided for a rough and a fine-grained industry sector classification scheme. Amongst others, we confirm that a stressed automobile industry has a severe impact on the German economy as a whole at different quantile levels whereas e.g., for a stressed financial sector the impact is rather moderate. Moreover, the vine copula based quantile regression approach is benchmarked against both classical linear quantile regression and expectile regression in order to illustrate its methodological effectiveness in the scenarios evaluated.Comment: 12 page

L’approche néo-institutionnelle et ses implications pour le management des relations avec les stakeholders en phase start-up

Les approches néo-institutionnelles et surtout la théorie de l’agence et la théorie des coûts de transaction ont fait leurs preuves dans divers domaines (en marketing, en GRH, etc.). Cependant, jusqu’à présent, peu de recherches en création d’entreprise se sont appuyées sur ces approches. Le but de la présente contribution est d’analyser la création d’entreprise sous l’angle de la Nouvelle Économie institutionnelle. Cet angle souligne le rôle crucial de la relation stakeholder-créateur. En effet, le succès d’une jeune entreprise dépend directement de l’acceptation et du soutien des parties prenantes. Les relations dans la phase de création sont caractérisées par des incertitudes particulièrement fortes dues à la nouveauté (liability of newness). Dans le processus d’évaluation et de jugement de la relation d’échange, le stakeholder est confronté à l’incertitude des promesses du créateur d’entreprise ; ces incertitudes influencent la décision du stakeholder d’entrer dans la relation d’échange avec la jeune entreprise. L’aptitude à gérer ces incertitudes augmente la probabilité de succès du projet de création. L’approche MUT (Management of Uncertainties and Trust) que nous présenterons ici est un outil pragmatique et normatif qui a pour but de structurer et de résoudre la problématique d’incertitude. De cette façon, il peut favoriser le succès de nouvelles entreprises en aidant l’entrepreneur à créer des relations stables avec les parties prenantes.Institutional Economics, especially the Principal-Agent Approach and Transaction Cost Economics, has proven of value in various disciplines (e.g. marketing, personnel management). However, so far they have hardly expanded into entrepreneurship research. In this paper, we strive to analyse the establishment of new ventures from the perspective of Institutional Economics. This highlights the decisive role of the relationship between the founder and the stakeholders. The success of a new venture strongly depends on the acceptance and the support of the stakeholders. At the same time, the relationships to the stakeholders are burdened with particularly high uncertainties, because of the “liability of newness.” When evaluating the offered transaction, the stakeholder is confronted by the founder’s insecure promises. These insecurities influence the potential stakeholders’ decision whether or not to establish a transaction relationship with the newly founded company. With the rising capability to handle such insecurities, the success of the new venture becomes more likely. As a pragmatic-normative tool to structure and handle the insecurities identified, the MUT-Approach presented in this paper can foster the success of new ventures by helping the founder to establish stable relationships with stakeholders.Los enfoques de la Economía Institucional, en particular la teoría del Agente-Principal y la de los costos de la transacción, han demostrado ser muy útiles en diversas disciplinas (por ejemplo marketing, gestión de personal). Sin embargo, hasta ahora no se han ampliado tanto en la investigación de la iniciativa empresarial. En este artículo nos esforzamos en analizar la creación de nuevas empresas desde la perspectiva de la Economía Institucional. Esto pone de relieve el papel decisivo de la relación entre el fundador y los interesados. El éxito de una nueva empresa depende en gran medida de la aceptación y el apoyo de las partes interesadas. Al mismo tiempo, estas relaciones son particularmente cargadas de grandes incertidumbres debido a la novedad (liability of newness). Al evaluar la transacción ofrecida, el interesado es confrontado con las promesas inseguras del fundador. Estas inseguridades influyen en la decisión de las potenciales partes interesadas de establecer o no una relación de intercambio con la recién creada empresa. El éxito de la nueva empresa se hace más probable con el aumento de la capacidad de manejar esas inseguridades. El MUT-Enfoque (Management of Uncertainties and Trust) presentado en este documento es un instrumento pragmático y normativo para estructurar y manejar el problema de las inseguridades identificadas. De esta forma puede favorecer el éxito de nuevas empresas, ayudando al fundador a establecer relaciones estables con las partes interesadas.Die Ansätze der Institutional Economics insbesondere Prinzipal-Agent-Theorie und Transaktionskostentheorie haben sich in unterschiedlichsten Fachbereichen (z.B. Marketing, Personalmanagement, etc.) bewährt. Haben. In der Entrepreneurship-Forschung haben diese Ansätze aber bislang wenig Eingang gefunden. Dieser Beitrag setzt sich zum Ziel, die Unternehmensgründung aus der Perspektive der Institutional Economics zu analysieren. Dies eröffnet den Blick auf die erfolgskritische Rolle der Stakeholder-Gründer-Beziehung. Die Beziehungen in der Gründungsphase sind aufgrund der liability of newness mit besonders hohen Unsicherheiten behaftet. Mit der Kompetenz, die Unsicherheiten zu handhaben, steigt die Erfolgswahrscheinlichkeit der Gründung. Der hier präsentierte MUT-Ansatz (Management of Uncertaintites and Trust) ist ein pragmatisch-normativer Ansatz zur Strukturierung und Lösung der Unsicherheitsproblematik

A metriplectic formulation of polarized radiative transfer

We present a metriplectic formulation of the radiative transfer equation with polarization and varying refractive index and show that this formulation automatically satisfies the first two laws of thermodynamics. In particular, the derived antisymmetric bracket enjoys the Jacobi identity. To obtain this formulation we suitably transform the equation and show that important physical quantities derived from the solution remain invariant under such a transformation

Transformations of Stabilizer States in Quantum Networks

Stabilizer states and graph states find application in quantum error correction, measurement-based quantum computation and various other concepts in quantum information theory. In this work, we study party-local Clifford (PLC) transformations among stabilizer states. These transformations arise as a physically motivated extension of local operations in quantum networks with access to bipartite entanglement between some of the nodes of the network. First, we show that PLC transformations among graph states are equivalent to a generalization of the well-known local complementation, which describes local Clifford transformations among graph states. Then, we introduce a mathematical framework to study PLC equivalence of stabilizer states, relating it to the classification of tuples of bilinear forms. This framework allows us to study decompositions of stabilizer states into tensor products of indecomposable ones, that is, decompositions into states from the entanglement generating set (EGS). While the EGS is finite up to $3$ parties [Bravyi et al., J. Math. Phys. {\bf 47}, 062106~(2006)], we show that for $4$ and more parties it is an infinite set, even when considering party-local unitary transformations. Moreover, we explicitly compute the EGS for $4$ parties up to $10$ qubits. Finally, we generalize the framework to qudit stabilizer states in prime dimensions not equal to $2$, which allows us to show that the decomposition of qudit stabilizer states into states from the EGS is unique.Comment: 37 pages, 7 figures, final versio

Development of a Trust-Aware User Simulator for Statistical Proactive Dialog Modeling in Human-AI Teams

The concept of a Human-AI team has gained increasing attention in recent years. For effective collaboration between humans and AI teammates, proactivity is crucial for close coordination and effective communication. However, the design of adequate proactivity for AI-based systems to support humans is still an open question and a challenging topic. In this paper, we present the development of a corpus-based user simulator for training and testing proactive dialog policies. The simulator incorporates informed knowledge about proactive dialog and its effect on user trust and simulates user behavior and personal information, including socio-demographic features and personality traits. Two different simulation approaches were compared, and a task-step-based approach yielded better overall results due to enhanced modeling of sequential dependencies. This research presents a promising avenue for exploring and evaluating appropriate proactive strategies in a dialog game setting for improving Human-AI teams.Comment: Preprint Version submitted to ACM UMA