Problem definition: We study the dynamic fulfillment problem in e-commerce, which incoming (multi-item) customer orders must be immediately dispatched to (a combination of) centers that have required inventory. Methodology/results: A prevailing approach this problem, pioneered by Jasin and Sinha 2015 , has been write a “deterministic” linear program dictates, for each item an multi-item order f...

BACKGROUND A growing number of positive airway pressure (PAP) device users will develop physical/sensory impairments such as arthritis. For these individuals, the usability of their PAP devices (e.g., efficiency and satisfaction) may impact the frequency and safety of device usage. Questionnaires to assess PAP usability are unavailable; therefore, we developed the Usability of Sleep Apnea Equip...

Frequent item set mining is a major data mining research area. Generalising from the standard single table case to a multirelational setting is simple in principle, but hard in practice. That is, it is simple to define frequent item sets in the multirelational setting, as well as extending the A-Priori algorithm. It is hard, because the well-known frequent pattern explosion at low min-sup setti...