We develop fraud detection and user authentication classifiers for mobile keystroke and haptic patterns, achieving 84% accuracy, 90% recall, and 81% precision within one model architecture, and 99% recall and 83% precision across all models. In addition to proposing these models that outperform existing touch dynamics authentication models, we present a secure, space-efficient, and extensible f...

Abstract The model describes an EOQ model with time-varying deterioration, partial backlogging which depends on the length of the waiting time for the next replenishment, linearly time-varying demand function over a finite time horizon and variable replenishment cycle. The model is solved analytically to obtain the optimal solution of the problem. It is illustrated with the help of a numerical ...

In this paper, the authors attempted to develop a deterministic inventory model for deteriorating item under a very realistic and practical demand rate which depends upon power of time (Power demand pattern). Also in this study we consider that the item deteriorate after a fixed time period called life time and taking incremental holding cost. Effect of partial backlogging also taken in account...

This article analyzes a supply chain management system (SCM), with two echelons. We consider a perishable inventory with Poisson demand, exponential life time and positive lead time at distribution center (DC) and retailer. Partial backlogging at retailer node is assumed with limited quantity. (s, S) policy at retailer and (M-1, M) policy at DC are assumed to get a tractable analytic solution. ...

An Optimization Framework for Solving Capacitated Multi-level Lot-sizing Problems with Backlogging Tao Wu†, Leyuan Shi†,>, Joseph Geunes‡, Kerem Akartunalı∗ † Department of Industrial and Systems Engineering, University of Wisconsin-Madison, Madison, WI 53706 ‡ Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL 32611 ∗ Department of Management Science, Univ...

In this paper, we present an inventory model for perishable items with freshness-dependent demand rate and partial backlogging. Because the customers prefer to purchasing fresh items for given price, the demand rate is assumed to be decreasing in the age of the items. The existence and uniqueness of the optimal solution of the profit per unit time are examined although the profit function is no...

This paper proposes a mixed integer programming formulation for modeling the capacitated multi-level lot sizing problem with both backlogging and setup carryover. Based on the model formulation, a progressive time-oriented decomposition heuristic framework is then proposed, where improvement and construction heuristics are effectively combined, therefore efficiently avoiding the weaknesses asso...

This study proposes an EOQ inventory mathematical model for deteriorating items with exponentially decreasing demand. In the model, the shortages are allowed and partially backordered. The backlogging rate is variable and dependent on the waiting time for the next replenishment. Further, we show that the minimized objective cost function is jointly convex and derive the optimal solution. A nume...