Graph Databases and Libraries: A Practical Comparison

Posted on Sat 13 June 2026 in Knowledge Graphs • Tagged with graph-databases, neo4j, kuzu, networkx, rdflib, cypher, sparql

Choosing a graph backend is less about finding the "best" tool and more about matching the tool to your scale, query style, and deployment constraints. This is a survey of the main options across three tiers: in-process libraries, embedded file-based engines, and full graph database servers. Each entry below gives …


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GraphRAG for Mainframe Abend Troubleshooting with AgentScope

Posted on Fri 12 June 2026 in GenAI • Tagged with GenAI, RAG, KnowledgeGraph, AgentScope, Mainframe, GraphRAG, Python, COBOL

Most mainframe troubleshooting RAGs fail at the same place: retrieval. An abend code like S0C7 is a near-exact lookup, not a fuzzy semantic match — but vector search happily returns the S0C4 chunk because the embeddings sit close together. And job dependencies are graph-shaped: an abend in step 3 cascades to …


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How Pepper Failed — SoftBank's $100M Emotional Robot That a Tablet Could Replace

Posted on Tue 09 June 2026 in AI Practice • Tagged with robotics, pepper, softbank, aldebaran, hardware-startups, failure-analysis, product-market-fit

In 2014, Masayoshi Son stood on a Tokyo stage and unveiled Pepper — a wide-eyed white humanoid he called the world's first robot that could read human emotions. He was not pitching a gadget. He was pitching a new era, one where SoftBank would lead the way as robots moved from …


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Rise and Fall of the Great Indian Mitra Robot

Posted on Tue 09 June 2026 in AI Practice • Tagged with robotics, mitra, invento-robotics, hardware-startups, failure-analysis, product-market-fit

In November 2017, a five-foot robot named Mitra greeted Ivanka Trump and chatted with Narendra Modi at the Global Entrepreneurship Summit in Hyderabad. It was the kind of moment a founder cannot buy — national press, a viral clip, India's own humanoid robot sharing a stage with world leaders.

Nine years …


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Sashiko — The AI That Catches Kernel Bugs Humans Already Missed

Posted on Mon 08 June 2026 in GenAI Engineering • Tagged with agentic-ai, linux-kernel, code-review, rust, llm, sashiko

Sashiko (刺し子, "little stabs") borrows its name from a Japanese reinforcement-stitching technique — fabric repaired and strengthened at its points of wear. The metaphor is the whole pitch: an agentic system that stitches over the weak spots in proposed Linux kernel patches before they land. It's written in Rust …


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100 Real GenAI Engineer Interview Questions

Posted on Wed 03 June 2026 in GenAI • Tagged with genai, interview, llm, rag, agents, mlops, compliance

Training & Adaptation Strategy

  1. What approaches exist for training or adapting an LLM? — Pretraining, fine-tuning, instruction tuning, prompt engineering, RAG.

  2. Base model vs instruction-tuned model? — Pure next-token predictor vs one aligned to follow instructions.

  3. When would you choose fine-tuning over RAG? — Stable domain knowledge, style/format control, latency sensitivity.

  4. When would …


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50 Basic GenAI Engineer Interview Questions

Posted on Tue 02 June 2026 in GenAI • Tagged with genai, interview, llm, rag, fine-tuning, mlops

A starter question bank for screening entry-level GenAI engineers. Grouped by theme, covering fundamentals through production concerns.

Fundamentals

  1. What is generative AI vs discriminative AI? — Generative models learn to produce new data; discriminative models learn decision boundaries to classify or predict.

  2. What is a large language model (LLM)? — A neural …


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