Case Western Reserve University
Nengbo Wang

Nengbo Wang

PhD Student

Teaching Information

Instructor: Machine Learning and Artificial Intelligence; Marketing Analytics

Education

  • Ph.D., Computer Science and Marketing (Dual Field), Case Western Reserve University, 2028
  • M.S., Business Analytics, Case Western Reserve University, 2020
  • B.S., Industrial Engineering, Jiangsu University, 2018

Awards and Honors

  • Excellent Researcher Student Award (Top-20 university-wide), CWRU, 2024
  • Innovation Award and Scholarship, Yum R&D Center, 2021-2022
  • Excellent Graduate Award, Jiangsu University, 2018

Current Projects

CausalRAG

Introduced causality into large language model frameworks by incorporating causal graphs into the RAG pipeline, significantly improving answer faithfulness (+10.64%) and context precision (+19.16%) over state-of-the-art methods. Published at ACL 2025.

Related Publications:

HugRAG

Rethinks knowledge organization for graph-based RAG through causal gating across hierarchical modules, explicitly modeling causal relationships to suppress spurious correlations while enabling scalable reasoning over large-scale knowledge graphs. Under review at ICML 2026.

Related Publications:

AI for Sales

Developed a theory-driven framework (AGA typology) to bridge the gap between AI conceptualizations and real-world deployment, systematically coding 45 state-of-the-art applications across technical details. Published at the Journal of Personal Selling and Sales Management.

Related Publications:
Filter:

HugRAG: Hierarchical Causal Knowledge Graph Design for RAG

2026

HugRAG rethinks knowledge organization for graph-based RAG through causal gating across hierarchical modules. It explicitly models causal relationships to suppress spurious correlations while enabling scalable reasoning over large-scale knowledge graphs. Extensive experiments demonstrate that HugRAG consistently outperforms competitive graph-based RAG baselines across multiple datasets and evaluation metrics, establishing a principled foundation for structured, scalable, and causally grounded RAG systems.

Artificial Intelligence

Technological and Digitalization Forces Shaping B2B Sales: Confluence, Challenges, Promises, and Pitfalls

2026

Handbook of Interorganizational Relationships

This handbook chapter examines the technological and digitalization forces shaping B2B sales, analyzing the confluence of emerging technologies, the challenges they present, their promises for transforming sales processes, and potential pitfalls in implementation.

Artificial Intelligence

AI-Guided Detection of Persuasion Strategies in Internal Marketing Communications

2026

Seventh AI and Strategy Consortium

This work presents an AI-guided approach to detecting persuasion strategies in internal marketing communications, rethinking the dominant entity-centric paradigm in retrieval for large language models by introducing a novel reasoning-oriented perspective.

Artificial Intelligence

Unpacking Generative AI for B2B Sales: Definitional Perspectives, Multidimensional Framework, and Sales Roles

2026

Journal of Personal Selling and Sales Management

This paper develops a theory-driven framework (AGA typology) to bridge the gap between AI conceptualizations and real-world deployment in B2B sales. Through systematic coding of 45 state-of-the-art applications based on diverse developer guides, the study provides a multidimensional perspective on how generative AI reshapes sales roles. Published in the Journal of Personal Selling and Sales Management (special issue, 14% acceptance rate).

Artificial Intelligence

Recommendation Method, Device, and Electronic Apparatus Based on Multimodal Features

2024

Patent CN118093984A

A patent describing a recommendation method and device based on multimodal features, utilizing AI techniques for enhanced recommendation systems in commercial applications.

Artificial Intelligence

Image Processing Method and Apparatus

2024

Patent CN118053002A

A patent describing an image processing method and apparatus for automated visual data analysis and transformation.

Computer Vision

Image Color Recognition and Recommendation Method and Device

2024

Patent CN118053001A

A patent describing a method and device for image color recognition and recommendation, applying computer vision techniques for automated color analysis.

Computer Vision

Image Generation Method and Apparatus Based on Artificial Intelligence

2022

Patent CN114723855A

A patent describing a method and apparatus for AI-based image generation, leveraging artificial intelligence techniques for automated visual content creation.

Computer Vision Artificial Intelligence

Method and Device for Determining and Evaluating Business Data Categories

2022

Patent CN114219037A

A patent describing a method and device for determining and evaluating business data categories, applying machine learning for automated business intelligence and data classification.

Artificial Intelligence

Business Classification Method and Device Based on Machine Learning

2022

Patent CN115018405A

A patent describing a business classification method and device based on machine learning, applying ML algorithms for automated business categorization and analysis.

Artificial Intelligence