Speaking & Community

Talks

Selected highlights first, followed by the full speaking archive.

Conference and technical community activity

Speaking Themes

Talks focus on making relationships, provenance, and knowledge changes visible in practical systems.

Knowledge Graphs & GraphRAG

Designing knowledge structures that keep context, relationships, and provenance visible.

Neo4j, SQL/PGQ & GQL

Connecting graph thinking with practical query languages, databases, and open standards.

Open Source Data Tools

Connecting communities, tools, and workflows for sustainable data systems.

Real-World Data Modeling

Using graph models to clarify dependencies, migration risks, and business relationships.

Upcoming Talks

Confirmed upcoming sessions and appearances.

2026-09-02

FOSS4G 2026 Hiroshima

From Map Layers to Knowledge Models: Extending Open GIS

Scheduled

Hiroshima, Japan

Speaker

2026-08-09

COSCUP 2026

From SPY×FAMILY to Evolving Knowledge Graph: Analysis of Wikipedia with Neo4j and LLMs

Scheduled

Taipei, Taiwan

Speaker

2026-08-09

COSCUP 2026

Underwater Heritage as an Open Knowledge Graph with Neo4j

Scheduled

Taipei, Taiwan

Speaker

2026-08-08

COSCUP 2026

From JOINs to Graph Thinking: Practical SQL/PGQ in PostgreSQL

Scheduled

Taipei, Taiwan

Speaker

Yearly Archive

2026

2026-06-20

LibreOffice Kaigi 2026

Handling Business Card Connections with LibreOffice(Base + PostgreSQL + SQL/PGQ)

Tokyo, Japan

Speaker

2026-03-13

PGConf India 2026

Fair Coffee, Fair Data: Practical Bias Detection in Coffee Supply Chains with PostgreSQL

Bengaluru, India

Speaker

2026-03-09

FOSSASIA Summit 2026

Fair Coffee, Fair Data: Bias Detection in Coffee Supply Chains with PostgreSQL SQL/PGQ and GQL

Bangkok, Thailand

Speaker

2026-02-28

Neo4j Users Group Meetup #55

From the Ocean Floor to the Future — Underwater Heritage and Knowledge Integrity in the Age of AI

Fukuoka, Japan

Speaker

2026-02-10

Neo4j Users Group Meetup #54

Beginner-Friendly Introduction to Cypher and Practical Usage: From Fundamental Concepts to Performance and RDB Integration (Cypher 5 / 25)

Tokyo, Japan

Speaker

2026-02-06

AGI Fukuoka #9

LLMs Change. Knowledge Shouldn’t. So Where Should Knowledge Live?

Fukuoka, Japan

LT

2025

2025-11-06

NODES 2025

From Sushi to Semantics: A GraphRAG-Powered Japanese Food Explorer with Neo4j and MCP

Online

Speaker

2025-09-05

LibreOffice Conference 2025

Creating University-Specific Thesis Templates in LibreOffice: A Step Toward Wider Use in Japan and Asia

Budapest, Hungary

Speaker

2025-08-09

COSCUP 2025

Japanese Food Knowledge Graph for Taiwanese.

Taipei, Taiwan

Speaker

2025-03-14

FOSSASIA Summit 2025

Vector Impact on Similarity Extraction: Movie Data Analysis

Online

Speaker

2024

2024-11-16

Open Source Conference 2024 Ehime

データ取得変換(ETL)が簡単なApache Hopワークショップ。 - グラフデータベースNeo4jワークショップ。

Ehime, Japan

Speaker

2024-11-07

NODES 2024

Earthquake Knowledge Graph in Japan

Online

Speaker

2024-11-03

COSCon'24

Analyzing the Relationship Between Open Source Communities and Books Using Vector and Graph Theory

Online

Speaker

2024-09-29

Open Source Conference 2024 Hiroshima

グラフデータベースNeo4jワークショップ。 - データ取得変換(ETL)が簡単なApache Hopワークショップ。

Hiroshima, Japan

Speaker

2024-09-07

Open Developers Conference(ODC)2024

グラフデータベースNeo4jワークショップ。 - データ取得変換(ETL)が簡単なApache Hopワークショップ。

Tokyo, Japan

Speaker

2024-08-04

COSCUP 2024

Enhancing Comic Search with Vector Index

Taipei, Taiwan

Speaker

2024-05-25

Open Source Conference 2024 Nagoya

LLMをNeo4jで使った知識グラフ(Knowledge Graph)の使い方。 - LibreOffice + Apache Hop + ChatGPT / Gemini

Nagoya, Japan

Speaker

2023

2023-12-09

Open Source Conference 2023 Fukuoka

Neo4j入門と最近の話題 - Apache Hopを使ったデータオーケストレーション:とにかくデータ収集を自動化してみよう。

Fukuoka, Japan

Speaker

2023-11-12

Open Source Conference 2023 Hiroshima

Neo4jで広がる知識の世界:ナレッジグラフと大規模言語モデル(LLM)で遊んでみよう。 - Apache Hopを使ったデータオーケストレーション:とにかくデータ収集を自動化してみよう。

Hiroshima, Japan

Speaker

2023-07-29

COSCUP 2023

Let's create a family tree of SPY×FAMILY using a graph database!

Taipei, Taiwan

Speaker

2022

2022-11-26

Open Source Conference 2022 Online Fukuoka

Apache Hopデータオーケストレーション入門(データ収集を自動化しよう) - Neo4jグラフデータベースに日本全国の駅データを取り込んでみよう)

Online

Speaker

2022-11-17

NODES 2022

Coffee Knowledge Graph

Online

Speaker

2022-10-29

Open Source Conference 2022 Online Fall

Apache Hopデータオーケストレーション入門(データ収集を自動化しよう) - Neo4jグラフデータベース入門(Neo4j 5.1を使って入門してみよう)

Online

Speaker

2022-10-01

Open Source Conference 2022 Online Hiroshima

データ統合プラットフォーム Apache Hop 2.0のご紹介 - Neo4jグラフデータベースのNeoDash 2.0でOpenStreetMapを使ったダッシュボードを作ろう。

Online

Speaker

2022-09-29

LibreOffice Conference 2022

Using graph theory, let's look at the addition, modification, and removal of features in all versions of LibreOffice. - Let's calculate with Math using MathType and Mathematica

Milan, Italy

Speaker

2022-07-30

COSCUP 2022

Exploring the Secrets of Star Trek "Stardate" with Apache Hop and Neo4j - Importing data from multiple resources into Spreadsheet is easy with Apache Hop

Online

Speaker

2022-07-30

Open Source Conference 2022 Online Kyoto

データ統合プラットフォーム Apache Hop 2.0のご紹介 - グラフデータベース Neo4j、新しいツール、問い合わせ言語GQLの話

Online

Speaker

2022-07-16

LibreOffice Kaigi 2022

CalcにApache Hopを使ってさまざまなデータを簡単に取り込もう

Online

Speaker

2022-06-19

JJUG CCC 2022 Spring

Javaのビルドやバージョンの違いをグラフデータベースで理解する。

Online

Speaker

2022-03-25

Neo4j Users Group Meetup #41

「RDB/CSVからNeo4jへのバッチ移行をいろいろ試してみる」Data Importer, Apache Hopの紹介

Tokyo, Japan

Speaker

2021

2021-11-18

db tech showcase 2021

Neo4jのKeyMakerを使ってデータ分析をしてみよう。

Tokyo, Japan

Speaker

2021-10-23

Open Source Conference 2021 Online/Fall

GRANDstackを使ってハリーポッターの人物相関図を見てみよう - Apache HOP (Incubating) の入門ワークショップ

Online

Speaker

2021-06-17

NODES 2021

Controlling Cypher Queries with Voice

Online

Speaker

2020

2020-11-04

db tech showcase 2020

ストリームデータ処理 Apache KafkaにNeo4jデータベースを使った統合システム

Tokyo, Japan

Speaker

2020-08-02

COSCUP 2020

Graph Powered COVID-19 Japan Tracker

Online

Speaker

2019

2019-12-09

Fukuoka.LT

グラフデータベースは如何に自然言語を理解するか?

Fukuoka, Japan

LT

2019-12-08

SocioInfo#19

データ分析をNeo4jで知識にする

Japan

Speaker

2019-09-25

db tech showcase 2019

グラフデータベースは如何に自然言語を理解するか?

Tokyo, Japan

Speaker

2019-08-18

COSCUP 2019

Graph-Powered Translation Model

Taipei, Taiwan

Speaker

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