In the past recent years, I have been using string diagrams to teach basic category theory (adjunctions, Kan extensions, but also limits and Yoneda embedding). Using graphical notations is undoubtedly joyful, and brings us close to other graphical syntaxes of circuits, interaction nets, etc... It saves us from laborious verifications of naturality, which is built-in in string diagrams. On the o...

Copulas have become a popular tool in multivariate modeling successfully applied in many fields. A good open-source implementation of copulas is much needed for more practitioners to enjoy the joy of copulas. This article presents the design, features, and some implementation details of the R package copula. The package provides a carefully designed and easily extensible platform for multivaria...

A dungeon role playing game intended to induce emotions such as boredom, surprise, joy, anger and disappointment is introduced. From the preliminary study, facial expressions indicating boredom and anger were observed. Individual differences were found on appraisal and facial expression of surprise, joy and disappointment.

We report on a study that shows plausible emotion dynamics for joy, distress, hope and fear, emerging in an adaptive agent that uses Reinforcement Learning (RL) to adapt to a task. Joy/distress is a signal that is derived from the RL update signal, while hope/fear is derived from the utility of the current state. Agent-based simulation experiments replicate psychological and behavioral dynamics...

© Papyrus Design and Evaluation of a Dual Display Notebook PC Form Factor enabling Writing/Annotation and Parallel Tasking Rahul Ajmera, Shekhar Borgaonkar, Sriganesh Madhvanath, Joy Amulya, Ramesh Kozhissery