何轩 陈.

Key Skills

Software

Other

Top Subject Matter

Enterprise customer service automation

Open-domain question answering

Top Data Types

Text

Image

Top Task Types

Question Answering

Freelancer Overview

AI Training and Evaluation - Knowledge Base QA System. Brings 1+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. AI-training focus includes data types such as Text and labeling workflows including Question Answering.

Labeling Experience

AI Training and Evaluation - Knowledge Base QA System

OtherTextQuestion Answering

Built and evaluated a knowledge-based intelligent conversational system using local LLMs and vector databases. Constructed and curated a domain-specific FAQ knowledge base, split and embedded documents, and tested question-answering workflows for accuracy improvements. Performed iterative evaluation and prompt/parameter optimization based on simulated question sets and user interaction evaluation. • FAQ documents were parsed and embedded for effective retrieval. • Retrieval-augmented generation (RAG) techniques facilitated precise response generation. • Simulated 50 diverse question-answer pairs for benchmarking and quality assessment. • Achieved accuracy improvements from 75% to 90% through data labeling and iterative tuning.

2026 - 2026

Work History