Problem 1: rewards from a small interval. Consider a version of the problem in which all the realized rewards are in the interval [12 , 1 2 + ] for some ∈ (0, 1 2). Define versions of UCB1 and Successive Elimination attain improved regret bounds (both logarithmic and root-T) that depend on the . Hint: Use a more efficient version of Hoeffding Inequality in the slides from the first lecture. It ...

Instructors create classroom environments that have the potential to impact learning by affecting student motivation, resistance, and self-efficacy. However, despite the critical importance of the learning environment in increasing conceptual understanding, little research has investigated what instructors say and do to create learning environments in college biology classrooms. We systematical...

We propose a model of firm reputation in which a firm can invest or disinvest in product quality and the firm’s reputation is defined as the market’s belief about this quality. We analyze the relationship between a firm’s reputation and its investment incentives, and derive implications for reputational dynamics. Reputational incentives depend on the specification of market learning. When consu...

The current design of BGP implicitly assumes the existence of trust between ASes with respect to exchanging valid BGP updates. This assumption of complete trust is problematic given the frequent announcement of invalid — inaccurate or unnecessary — updates. This paper presents AS-CRED, a reputation service for ASes which quantifies the level of trust one can have with respect to its announcing ...

In this paper, we present a hero recommendation engine for the popular computer game Dota 2. We detail previous efforts at hero recommendation, building on these to provide a more complete exploration of machine learning algorithms applied to this problem. In addition to discussing the details behind the machine learning algorithms we use, we also provide insight into our method of data collect...

Successful analysis of player skills in video games has important impacts on the process of enhancing player experience without undermining their continuous skill development. Moreover, player skill analysis becomes more intriguing in team-based video games because such form of study can help discover useful factors in effective team formation. In this paper, we consider the problem of skill de...

Team teaching has long been thought to have positive benefits for learners and teachers in a variety of educational settings. Using an action research model the authors describe the outcomes of team teaching an online graduate level disaster research and statistics course. Separated geographically, two online instructors taught at a distance over the course of five semesters using an interactiv...

student concept learning in pulmonary physiology. Pathfinder scaling is used to derive concept maps for medical and veterinary students and their physiology instructors at Northwestern University and the University of Wisconsin, respectively. The concept maps are evaluated for coherence (internal consistency), student-instructor similarity, and correlation of similarity with final examination s...

When, as teenagers, we visited the historic site of Vaison-la-Romaine in Southern France, the discovery of Roman capitals buried under the foundations of a mediaeval church was really astounding. How, besides reusing full blocks of the antique architecture, the builders dared reduce the most worked Roman stones to the humble function of backfill? Have new builders become totally disrespectful t...

Reputations that are transmitted from person to person can deter moral hazard and discourage entry by bad types in markets where players repeat transactions but rarely with the same player. On the Internet, information about past transactions may be both limited and potentially unreliable, but it can be distributed far more systematically than the informal gossip among friends that characterize...