Pingping Z.

Key Skills

Software

Other

Top Subject Matter

AI Language Models (LLMs)

Financial Services & Compliance

Professional Workflows & Operations

Top Data Types

Text

Document

Top Task Types

RLHF

Classification

Freelancer Overview

AI Model Trainer (Self-Directed Learning). Brings 19+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other, Internal, and Proprietary Tooling. Education includes Vocational High School Diploma, 职业高中. AI-training focus includes data types such as Text and Document and labeling workflows including RLHF and Classification.

Labeling Experience

Content Creator/Streamer (AI Tagging & Annotation)

OtherTextClassification

This experience centered on real-time annotation of multimodal social media and game stream chat data. The primary focus was tagging user expressions and intentions to enhance AI's contextual understanding for natural language processing models. I systematically categorized and labeled user intents in dynamic digital environments. • Comprehensive tagging of user intent • Managed large-scale, diverse real-time data streams • Applied refined social media annotation frameworks • Improved AI contextual understanding for chat and language models

2021

Founder & General Manager (Domain Expert Annotation for AI)

DocumentClassification

As founder and general manager, I created domain-expert annotations and strict QA SOPs for business datasets. The work included annotating complex commercial documents and generating zero-defect labeled datasets for AI training. I also authored detailed guidelines for consistent, rule-based annotation in business use cases. • Provided expert data labeling for contracts and business plans • Designed and enforced rigorous SOPs for annotation quality • Ensured zero-defect output through multi-step QA processes • Specialized in commercial document classification and markup

2020

AI Model Trainer (Self-Directed Learning)

OtherTextRLHF

This experience involved self-directed AI training with emphasis on Prompt Engineering and RLHF evaluation. The work included testing prompts and ranking and grading model responses using platforms like ChatGPT, Gemini, and Hermes. I developed expert skills in optimizing model output and evaluating LLM behaviors for quality improvement. • Led independent research into prompt engineering techniques • Conducted detailed RLHF evaluations and rankings • Regularly tested and refined prompt strategies for LLMs • Enhanced model response quality through targeted annotation

2019

Education

Work History