Reviewed English editions of ruah's field notes on LLMs, RAG, machine-learning systems, and AI agents.https://blog.ruahverce.com/enhttps://blog.ruahverce.com/en/posts/08-multilingual-korean-embedding/https://blog.ruahverce.com/en/posts/08-multilingual-korean-embedding/Train and evaluate Korean and multilingual embeddings across monolingual, cross-lingual, and code-mixed retrieval with balanced data and native benchmarks.Mon, 20 Jul 2026 00:00:00 GMTEmbeddingsMultilingualNLPKoreanNLPCrossLingualRetrievalEvaluationhttps://blog.ruahverce.com/en/posts/02-astro-railway-cloudflare-setup/https://blog.ruahverce.com/en/posts/02-astro-railway-cloudflare-setup/Build an Astro 5 blog, deploy each Git push through Railway, and connect Cloudflare DNS and CDN, with fixes for SPA fallback and broken Korean SVG text.Tue, 28 Apr 2026 00:00:00 GMTTechnicalBloggingPersonalDomainAstroRailwayCloudflarehttps://blog.ruahverce.com/en/posts/01-what-is-harness-engineering/https://blog.ruahverce.com/en/posts/01-what-is-harness-engineering/Harness engineering designs the rules, tools, memory, permissions, roles, and validation around an AI agent. Learn the agent loop and a seven-axis roadmap.Thu, 23 Apr 2026 00:00:00 GMTHarnessEngineeringAIAgentsClaudeCode