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- abstractSeptember 2023
- posterSeptember 2023
Fruits Detections Using Single Shot MultiBox Detector
BSCI '23: Proceedings of the 5th ACM International Symposium on Blockchain and Secure Critical InfrastructureJuly 2023, Pages 140–144https://doi.org/10.1145/3594556.3594619Object detection, specifically, deals with the computer vision task of detecting instances of an object such as humans, animals, or cars in the form of digital images. Single Shot multiBox Detector (SSD) MobileNet model provides confidence values for a ...
- research-articleNovember 2022
Debiasing In-Sample Policy Performance for Small-Data, Large-Scale Optimization
Operations Research (OPRH), Volume 72, Issue 2March-April 2024, Pages 848–870https://doi.org/10.1287/opre.2022.2377In many modern large-scale decision-making problems, data can be scarce. As a result, traditional methods such as cross-validation perform poorly in evaluating the performance of decision-making policies. In “Debiasing In-Sample Policy Performance for ...
Motivated by the poor performance of cross-validation in settings where data are scarce, we propose a novel estimator of the out-of-sample performance of a policy in data-driven optimization. Our approach exploits the optimization problem’s sensitivity ...
- research-articleAugust 2022
Group Activity Recognition in Restaurants to Address Underlying Needs: A Case Study
2022 31st IEEE International Conference on Robot and Human Interactive Communication (RO-MAN)Aug 2022, Pages 236–243https://doi.org/10.1109/RO-MAN53752.2022.9900691Enabling robots to identify when humans need assistance is key to being able to provide help that is both proactive and efficient. This challenge is particularly difficult for humans eating a meal in a restaurant, a context which is dense with interlaced ...
- research-articleJanuary 2021
Dynamic Server Assignment in Multiclass Queues with Shifts, with Applications to Nurse Staffing in Emergency Departments
Operations Research (OPRH), Volume 69, Issue 6November-December 2021, Pages 1936–1959https://doi.org/10.1287/opre.2020.2050Dynamic Scheduling Under the Shift Constraint
Many service systems operate with staff who work in shifts. In “Dynamic Server Assignment in Multiclass Queues with Shifts, with Application to Nurse Staffing in Emergency Departments,” C. W. Chan, M. Huang, and V. Sarhangian study the dynamic assignment ...
Many service systems are staffed by workers who work in shifts. In this article, we study the dynamic assignment of servers to different areas of a service system at the beginning of discrete time intervals, namely, shifts. The ability to reassign servers ...
- research-articleNovember 2018
CalcuCafé: Designing for Collaboration Among Coffee Farmers to Calculate Costs of Production
Proceedings of the ACM on Human-Computer Interaction (PACMHCI), Volume 2, Issue CSCWArticle No.: 149, Pages 1–26https://doi.org/10.1145/3274418Many smallholder coffee farmers in Latin America join cooperatives for increased access to global markets. This requires them to understand their costs relative to a complex sustainable coffee production process. To that end, we designed CalcuCafé, a web-...
- abstractApril 2018
Designing for Transparency of Coffee Production Costs
CHI EA '18: Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing SystemsApril 2018, Paper No.: LBW529, Pages 1–6https://doi.org/10.1145/3170427.3188508Smallholder coffee farmers in Latin America depend on global supply chains for their livelihood, and many join certified cooperatives to increase access to fair prices. In order to find out what a fair price is, we designed CalcuCafé, a tool for coffee ...
- research-articleApril 2017
A unique failure mechanism induced by chip to board interaction on fan-out wafer level package
2017 IEEE International Reliability Physics Symposium (IRPS)Apr 2017, Pages 4A-6.1–4A-6.4https://doi.org/10.1109/IRPS.2017.7936306Despite many fatigue mechanisms published for Fan-out Wafer Level Package (FOWLP), most merely focused on stand-alone package reliability or solder joint capability. Only a few explored the failures of Chip to Board Interaction (CBI) due to the difficulty ...
- articleOctober 2016
Worst-case performance analysis of some approximation algorithms for minimizing makespan and flowtime
Journal of Scheduling (KLU-JOSH), Volume 19, Issue 5October 2016, Pages 547–561https://doi.org/10.1007/s10951-015-0467-4In 1976, Coffman and Sethi conjectured that a natural extension of LPT list scheduling to the bicriteria scheduling problem of minimizing makespan over flowtime-optimal schedules, called the LD algorithm, has a simple worst-case performance bound: $$\...
- articleApril 2003
Design and evaluation of a multi-agent collaborative Web mining system
Decision Support Systems (DSSY), Volume 35, Issue 101 April 2003, Pages 167–183https://doi.org/10.1016/S0167-9236(02)00103-3Most existing Web search tools work only with individual users and do not help a user benefit from previous search experiences of others. In this paper, we present the Collaborative Spider, a multi-agent system designed to provide post-retrieval ...