Technical Journal

Technical journals that introduce new technologies, services and R&D activities at NTT DOCOMO and Group companies.

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Latest issue

VOL.26 NO.4
Apl.2025

Special Articles on the Potential of LLM Technologies to Support Business

Technical Initiatives Supporting LLM Value-added Platform

Since the appearance of ChatGPT, LLMs have been attracting attention throughout the world and their use in business has been accelerating. NTT DOCOMO has developed an “LLM value-added ... Read more

AI Customer Service Enabled by Communication AI

Existing chatbots and AI for customer service have been problematic because they cannot respond in a way tailored to individuals and their situations. Solving this problem necessitates understanding ... Read more

Personalized Dialogue Technology toward Human-centered AI

Thanks to the appearance of LLMs, dialogue systems have improved significantly in performance, and today, they are being used in a wide variety of fields including customer support. There are also great ... Read more

LLM Utilization—Centered on “tsuzumi”—for Creating Next-generation Machine Translation Experiences

Next-generation machine translation experiences created by using LLMs are described in this article. First, it is shown that an LLM developed by NTT—called “tsuzumi”—has two key ... Read more

Special Articles on Evolution of Lifestyle-supporting Estimation Services

Immunity Estimation AI for Immunity Self-care Using Smartphone Logs

After the COVID-19 pandemic and other events, people's interest in and awareness of immunity has increased. Although the importance of enhancing immunity is generally known, it is difficult to assess immunity ... Read more

Technology for Estimating the Number of Rail Passengers Using Mobile Network Mechanisms for Rail Advertising

In the advertising business, the number of people viewing an advertisement (impressions) is measured to visualize the effectiveness of the advertisement. However, for advertisements in railcars, it is necessary to ... Read more

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