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HOME News News Release List NRI Group to Launch “Private LLM” Generative AI Solution Designed to Minimize Data Leak Risks

NRI Group to Launch “Private LLM” Generative AI Solution Designed to Minimize Data Leak Risks

Jan. 11, 2024

Nomura Research Institute, Ltd.
NRI Digital, Ltd.

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Tokyo, January 11, 2024 – Nomura Research Institute, Ltd. (Headquarters: Chiyoda Ward, Tokyo, Chairman and President & CEO, Representative Director: Shingo Konomoto, “NRI”) and NRI Digital, Ltd. (Headquarters: Yokohama City, Kanagawa Prefecture, President & COO: Masakazu Amamiya, “NRI Digital”) intent to launch providing a generative AI solution called “Private LLM (Large Language Model)” to minimize the risk of data leaks in spring or later in 2024. This solution caters to institutions that require an especially high level of information security control.

Runs on private clouds and in on-premises environments, enabling confidential and sensitive information to be handled safely

When it comes to the use of generative AI, the extent to which confidential and sensitive information should be transmitted to public LLMs (as represented by OpenAI’s*1 GPT-4*2, for instance) has become a major concern. With this solution, open-source LLMs such as Meta’s*3 Llama 2*4 can be run on private cloud services being operated at NRI’s data centers or in on-premises environments involving information systems owned and managed by companies themselves. As a result, this solution stands as a bastion of security for confidential and sensitive information. It can even be adapted to high-level information security control requirements.

Tailored LLMs to meet business needs of individual companies

While Open-source LLMs such as Llama 2 may not yet match their public LLMs in performance, by being customized using a company’s proprietary data (pre-training*5, fine-tuning*6 etc.), such LLMs potentially can exhibit a business-ready level of performance depending on the nature of the task involved (see the in-house demonstration results and reference materials below). With this solution, LLMs can be customized in a way that both minimizes the risk of data leaks during training (which is even more confidential) and is most suited to a given company’s operations.

Expanding horizons with“Private voice recognition” and other peripheral modules

Combining voice recognition features with LLMs greatly expands the range of applications to include things like responding to inquiries at call centers or in-person, and thus peripheral modules will also be provided, including a “private voice recognition” module for minimizing the risk of leaks of audio data that can identify specific individuals.
The solution’s menu system is depicted in the graphic below.

Chart: “Private LLM” Solution Menu System

Text outlined in white indicates content provided by NRI.
GPU: Graphics Processing Unit. Required for running LLMs.
RAG: Retrieval Augment Generation. A method for getting LLMs to generate accurate responses with reference to external factual data.

Proven Efficiency in NRI’s in-house operations

To verify this solution’s performance capabilities, NRI applied it to its own in-house accounting administrative procedure support. Using a training set of 60,000 examples for customization, fine-tuning was performed on Llama 2 which was being run on a GPU installed at an NRI data center, and the experiment yielded a business-ready level of higher performance. As a result, some of the relevant operations were replaced by the solution, leading to a 60% reduction in the amount of time required for Q&A creation.
NRI and NRI Digital will continue to be proactively engaged in developing various services that enable the use of generative AI that is optimized to meet the needs of companies and individuals.

  • *1  

    OpenAI: a company that conducts AI research and deployment. For details, see the following website.

  • *2  

    GPT-4: one of the large language models developed and provided by OpenAI.

  • *3  

    Meta: for details, see the following website.

  • *4  

    Llama 2: a large language model developed by Meta. Publicly available for commercial use (including the base model).

  • *5  

    Pre-training: training an LLM with generic language patterns or knowledge.

  • *6  

    Fine-tuning: making fine adjustments to an LLM to tailor it for specific tasks.

For Reference

Table 1: Public LLM and NRI’s Solution “Private LLM”: A Feature Comparison

Table 2: Prospective Llama 2 Performance Improvements Through Customization

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Inquiries about this news release:

Kayano Umezawa, Miku Funayama
Corporate Communications Department
Nomura Research Institute, Ltd.
Tel: +81-3-5877-7100

Inquiries about the Solution:

Tomoyasu Okada
AI Solution Promotion Department
Nomura Research Institute, Ltd.

Hiroyuki Nakamura
DX Planning Unit
NRI Digital, Ltd.