One-Armed Scientists?

One-armed oscillations in Be star discs

Aims. In this paper we study the effect of the quadrupole-term in the gravitational potential of a rotationally deformed central Be star on one armed density waves in the circumstellar disc. The aim is to explain the observed long-term violet over red (V/R) intensity variations of the double peaked Balmer emission-lines, not only in cool Be star systems, but also in the hot systems like γ Cas. ...

Ramsey Games Against a One-Armed Bandit

We study the following one-person game against a random graph: the Player’s goal is to 2-colour a random sequence of edges e1, e2, . . . of a complete graph on n vertices, avoiding a monochromatic triangle for as long as possible. The game is over when a monochromatic triangle is created. The online version of the game requires that the Player should colour each edge when it comes, before looki...

Woodroofe ’ S One - Armed Bandit Problem Revisited

We consider the one-armed bandit problem of Woodroofe [J. Amer. Statist. Assoc. 74 (1979) 799–806], which involves sequential sampling from two populations: one whose characteristics are known, and one which depends on an unknown parameter and incorporates a covariate. The goal is to maximize cumulative expected reward. We study this problem in a minimax setting, and develop rate-optimal police...

Risk Aversion, Road Choice, and the One-Armed Bandit Problem

Be My Guinea Pig: Information Spillovers in a One-Armed

This paper tests the Nash equilibrium predictions of a two-period, two-player one-armed bandit problem with information spillovers. Public information allows individuals to learn from their own private outcomes and/or from the other player’s outcomes, creating an incentive to free-ride. The results from our experiment suggest players undervalue information, yet they also behave strategically ba...