Stable Learning via Sample Reweighting. (arXiv:1911.12580v1 [cs.LG])

We consider the problem of learning linear prediction models with model misspecification bias. In such case, the collinearity among input variables may inflate the error of parameter estimation, resulting in instability of prediction results when training and test distributions do not match. In this paper we theoretically analyze this fundamental problem and propose a sample…

FairPrep: Promoting Data to a First-Class Citizen in Studies on Fairness-Enhancing Interventions. (arXiv:1911.12587v1 [cs.LG])

The importance of incorporating ethics and legal compliance into machine-assisted decision-making is broadly recognized. Further, several lines of recent work have argued that critical opportunities for improving data quality and representativeness, controlling for bias, and allowing humans to oversee and impact computational processes are missed if we do not consider the lifecycle stages upstream from…

Understand Dynamic Regret with Switching Cost for Online Decision Making. (arXiv:1911.12595v1 [cs.LG])

As a metric to measure the performance of an online method, dynamic regret with switching cost has drawn much attention for online decision making problems. Although the sublinear regret has been provided in many previous researches, we still have little knowledge about the relation between the dynamic regret and the switching cost. In the paper,…

A Generalization Theory based on Independent and Task-Identically Distributed Assumption. (arXiv:1911.12603v1 [cs.LG])

Existing generalization theories analyze the generalization performance mainly based on the model complexity and training process. The ignorance of the task properties, which results from the widely used IID assumption, makes these theories fail to interpret many generalization phenomena or guide practical learning tasks. In this paper, we propose a new Independent and Task-Identically Distributed…

The Weighted Tsetlin Machine: Compressed Representations with Weighted Clauses. (arXiv:1911.12607v1 [cs.LG])

The Tsetlin Machine (TM) is an interpretable mechanism for pattern recognition that constructs conjunctive clauses from data. The clauses capture frequent patterns with high discriminating power, providing increasing expression power with each additional clause. However, the resulting accuracy gain comes at the cost of linear growth in computation time and memory usage. In this paper,…

A lifestyle-based model of household neighbourhood location and individual travel mode choice behaviours. (arXiv:1902.01986v2 [econ.GN] UPDATED)

Issues such as urban sprawl, congestion, oil dependence, climate change and public health, are prompting urban and transportation planners to turn to land use and urban design to rein in automobile use. One of the implicit beliefs in this effort is that the right land-use policies will, in fact, help to reduce automobile use and…

Optimal stopping for the exponential of a Brownian bridge. (arXiv:1904.00075v2 [math.PR] UPDATED)

In this paper we study the problem of stopping a Brownian bridge $X$ in order to maximise the expected value of an exponential gain function. In particular, we solve the stopping problem $$\sup_{0\le \tau\le 1}\mathsf{E}[\mathrm{e}^{X_\tau}]$$ which was posed by Ernst and Shepp in their paper [Commun. Stoch. Anal., 9 (3), 2015, pp. 419–423] and was…

Clearing price distributions in call auctions. (arXiv:1904.07583v2 [q-fin.TR] UPDATED)

We propose a model for price formation in financial markets based on clearing of a standard call auction with random orders, and verify its validity for prediction of the daily closing price distribution statistically. The model considers random buy and sell orders, placed following demand- and supply-side valuation distributions; an equilibrium equation then leads to…

Perceived Advantage in Perspective Application of Integrated Choice and Latent Variable Model to Capture Electric Vehicles Perceived Advantage from Consumers Perspective. (arXiv:1905.11606v2 [econ.GN] UPDATED)

Relative advantage, or the degree to which a new technology is perceived to be better over the existing technology it supersedes, has a significant impact on individuals decision of adopting to the new technology. This paper investigates the impact of electric vehicles perceived advantage over the conventional internal combustion engine vehicles, from consumers perspective, on…

An intelligent financial portfolio trading strategy using deep Q-learning. (arXiv:1907.03665v4 [q-fin.PM] UPDATED)

Portfolio traders strive to identify dynamic portfolio allocation schemes so that their total budgets are efficiently allocated through the investment horizon. This study proposes a novel portfolio trading strategy in which an intelligent agent is trained to identify an optimal trading action by using deep Q-learning. We formulate a Markov decision process model for the…