about the author

Keiji Kamigusa is an authority on AI, machine learning, and text mining, bringing over 16 years of hands-on industry experience. As the former CTO of a text mining company, he has led engineering and sales teams, accumulated deep technical and practical business expertise, and directly managed large-scale AI deployments for both cloud-based and local systems. He has deployed local language models for over 50 companies and is also a prolific educator, with over 60,000 students, primarily in Japan. Kamigusa has published more than 50 books on AI and machine learning, holds three patents in text analytics, and is the founder of AIGYM Co., Ltd., which focuses on AI-driven corporate training and agent management platforms. His diverse experience bridges technical mastery, real-world application, and accessible teaching, uniquely qualifying him to guide beginners and professionals alike in local AI development.