Sajjad NAJAFI

Associate Professor

Information Systems and Operations Management

Biography

Sajjad Najafi is an Associate Professor of Information Systems and Operations Management. He holds a Ph.D. in Operations Research from the University of Toronto. Prior to joining HEC Paris, he was a Research Fellow at Ross School of Business, the University of Michigan, Ann Arbor. Sajjad's current research revolves around dynamic pricing, revenue management, assortment optimization, and operations analytics in the retail and hospitality industries.

His work has been published in top-tier journals, including Management Science, Operations Research, Manufacturing & Service Operations Management, and Production and Operations Management. He serves as an Associate Editor for the Decision Sciences journal and has been a Judge for the 2024 and 2025 MSOM Student Paper Competitions.

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Scientific articles

Assortment and Price Optimization Under a Multi-Attribute (Contextual) Choice Model

Operations Research, Forthcoming, (in coll. with S. JASIN, J. UICHANCO, J. ZHAO)

Group Warranty Contracts to Coordinate Assembly Supply Chains with Nontestable Components

Production and Operations Management, June 2024, vol. 33, n° 2, pp 475-493, (in coll. with I. DUENYAS, S. IRAVANI, L. LI)

Multiproduct Dynamic Pricing with Limited Inventories Under a Cascade Click Model

Manufacturing & Service Operations Management, March - April 2024, vol. 26, n° 2, pp 554-572, (in coll. with I. Duenyas, S. Jasin, J. Uichanco)

Assortment Optimization with Multi-Item Basket Purchase under Multivariate MNL Model

Manufacturing & Service Operations Management, January - February 2024, vol. 26, n° 1, pp 215-232, (in coll. with S. JASIN, C. LYU, H. ZHANG)

Joint Learning and Optimization for Multi-product Pricing (and Ranking) under a General Cascade Click Model

Management Science, June 2022, vol. 68, n° 10, pp 7362-7382, (in coll. with X. GAO, S. JASIN, H. ZHANG)

Working papers

Power of Waste-Aware Display Policies in Online Grocery Retail: A Unified Framework

Cahier de Recherche du Groupe HEC , 2025

Pricing and Assortment Optimization under an MNL Model with Default Specific Consideration

Cahier de Recherche , 2025

Assortment and Price Optimization Under a Multi-Attribute (Contextual) Choice Model

SSRN Electronic Journal , 2023

Price Markdowns to Induce Customers to Opt Out of Free Returns

SSRN Electronic Journal , 2018

How Freemium Gets Consumers to Pay a Premium: The Role of Loss-Aversion

SSRN Electronic Journal , 2017

Dynamic Pricing Under Consumer's Sequential Search

SSRN Electronic Journal , 2016