Associate Professor, Department of Logistics and Operations Management, HEC Montréal
It is my pleasure to be part of GERAD, a large and diverse research center, where I can learn from and have an opportunity to collaborate with great researchers in the areas of optimization and data science. My early research, when I was a PhD student, focused on an integrated planning system in supply chains to efficiently determine the decisions in production, inventory and distribution simultaneously. The framework, later extended, to include the case of uncertain demand. My postdoctoral research served to further examined the decomposition techniques for stochastic and robust vehicle routing problems. At the same time, I have expanded my interests to multi-agent systems in artificial intelligence as well as sequential decision process under uncertainty. Before returning back to academia, I worked at JDA Innovation Labs in Montreal as a data scientist to develop data-driven tools in several applications including retail analytics and supply chain planning using various machine learning and optimization techniques.
My recent interest in research lies in the applications of decision and data analytics in supply chain management. In terms of methodologies, I am particularly interested in the algorithmic developments of large-scale stochastic and robust optimization as well as sequential decision algorithms with possible enhancements from data analytics.
One of my focuses is to enable new capabilities at the beginning of the supply chain planning process, namely demand forecast and inventory planning. I wish to explore general forms of demand uncertainty predictions that can be used to better describe non-regular items with a number of zero demand observations and lumpy patterns, and investigate how they can be embedded directly into the inventory optimization frameworks as well as subsequent planning processes.
Another relevant area of focus is the optimization of a multi-stage manufacturing and distribution plan under uncertainty in the context of material requirements planning (MRP) and distribution resource planning (DRP). In an uncertain environment, the plan determined by using deterministic optimization (where demand and lead time are assumed to be known) could become infeasible or result in poor performance. In addition to this, we would like to explore learning algorithms that can be used to anticipate disruptions and recommend a set of actions that should be put in place to neutralize impact of the disruptions. These applications would allow us to bridge the gap between planning and execution in supply chain operations.
Member of GERAD since February 2017
Title: Stochastic lot sizing problems with service level constraints
The Institute for Data Valorization (IVADO) has released the details of its Strategic Research Funding Program in artificial intelligence (AI). The research program " Integrated Machine Learning and Optimization for Decision Making under Uncertainty: Towards Robust and Sustainable Supply Chains " led by the members Erick Delage and Yossiri Adulyasak from HEC Montréal will receive a $1.2 million grant.
Said Salim Rahal – HEC Montréal
Yossiri Adulyasak – Associate Professor, Department of Logistics and Operations Management, HEC Montréal
Karim Pérez Martinez – HEC Montréal
Cahiers du GERAD
Optimizing freight procurement for transportation-inventory systems under supply and demand uncertainty
The procurement of freight services is an important element for the supply chain management of a shipper (i.e., a manufacturer or retailer) that sources tran...BibTeX reference
Production yield can be highly volatile and uncertain, especially in industries where exogenous and environmental factors such as the climate or raw material...BibTeX reference
Binary quadratic programming (BQP) is a class of combinatorial optimization problems comprising binary variables, quadratic objective functions and linear/no...BibTeX reference