TECHNOLOGY
Technology & Data
Our core asset is Korean language education data normalized for direct use by AI. Follow the process of building this data.
THE PROBLEM
We initially used GPT-4o to create lesson plans
The generated lesson content often did not match learners’ proficiency levels. We measured level classification accuracy using an evaluation dataset built against the National Institute of Korean Language’s standard curriculum.
Existing data lacked sufficient level information structured for use by AI. We therefore decided to build the data we needed ourselves.
SOURCE
Research papers, Korean textbooks, and standard curricula.
This is where we began
Researchers specializing in Korean language education organized the data by domain
STEP 1 · VOCABULARY
0headwordsVocabulary
All levels, 1–6 · 26,574 vocabulary instances · 26,574 semantic category mappings
STEP 2 · GRAMMAR
0rowsGrammar
660 grammar items + 24,418 inflected forms · Automatically validated using patented technology
STEP 3 · TOPIC
0categoriesTopics
2,766 unit mappings · 341 level-sequence entries
STEP 4 · FUNCTION
0categoriesFunctions
Communicative function categories · 5,875 unit mappings · 205 level-sequence entries
STEP 5 · CROSS MAPPING
0rowsCross-mapping
Vocabulary × grammar · Vocabulary × functions · Vocabulary × topics · Functions × grammar, and more. Individual lists connect to form a single graph
TOTAL
0rowsNormalized Korean language education data
INTELLECTUAL PROPERTY
Intellectual property
Method for Assessing Pronunciation Accuracy Based on Korean Phoneme Similarity
No. 10-2966195
Registered on 2026.05.13
Method and System for Automatic Validation of Korean Grammar Data
No. 10-2999681
Registered on 2026.07.30
MCP SERVER
Delivering integrated data to each service
Connecting vocabulary, grammar, curricula, and other domains enables us to provide Korean language education data suited to learners’ levels and goals. The integrated data is delivered to each service through an MCP server and used to generate content for learners of Korean as a second language.