WHAT I CAN DO FOR YOU

AI productcapability model

I break down business scenarios from a product manager's perspective, judge AI feasibility, turn solutions into product workflows, and close the loop through evaluation and iteration.

Understand the capability boundaries and limitations of mainstream large models, and judge which business scenarios are suitable for AI.

Combine user research and competitive analysis to identify where AI can replace or enhance real business workflows, then turn the judgment into executable product solutions.

Translate scenario judgment into concrete AI workflow design, choosing the right solution based on task complexity.

Break down requirements, write PRDs, build prototypes, and use Vibe Coding tools to quickly validate ideas and iterate product form.

Design quantitative evaluation systems for AI output and use LLM-as-Judge to improve output reliability.

Analyze Bad Cases, trace root causes, locate the problem, and iterate with targeted improvements.

Yichen Huang

Product

Manager

Hiryan Hang
Hiryan Hang

About me

I am a product manager transitioning from traditional internet products into AI product management. I am building practical AI product capabilities through real projects, including AI scenario judgment, Agent workflow design, and model evaluation and optimization. Rather than simply calling a model, I care more about how to land an AI product that is verifiable, controllable, and iterative, then keep improving it through testing and feedback.

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Featured AI Projects

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Version Iterations

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Evaluation Samples

Call Today

15958155750

Email

hiryanhang@gmail.com

I focus on turning ambiguous AI opportunities into real scenarios, product workflows, runnable prototypes, and case studies that can be reviewed.

RAGAgentPromptVibe Coding

Featured projects

AI product projects

Starting from problems and pain points I encountered myself, and alongside my AI learning journey, I independently vibe coded and completed the following projects:

Revive illustration

RAG + Memory Workflow

Revive

A historical-saved-content reuse tool for knowledge workers, helping past collections become usable again when writing proposals, reviewing work, or preparing reports, while gradually adapting to task preferences.

Live

RAGTask Preference MemoryEvidence CitationStructured GenerationKnowledge Reuse

Problem

Many knowledge workers save articles, cases, methods, and experience-based content for years, but when writing proposals, doing retrospectives, or preparing reports, they still need to search, reread, filter, and summarize everything manually. The problem is not only that content is hard to find; saved materials rarely turn into directly usable work output at the moment a real task appears.

Target Users

Product managers, operators, marketers, consultants, and content workers who keep long-term collections and need to turn external information into proposals, reviews, reports, planning materials, or communication drafts.

Existing Alternatives

Users usually rely on platform bookmarks, read-it-later tools, knowledge bases, or manual research combined with general AI. These tools can store or generate content, but they require high upfront organization effort, provide unclear evidence for results, and rarely adapt to a user's own output habits over time.

Product Solution

Revive is not a general second brain or a heavy knowledge-management system. It focuses on reusing saved content when a task happens. Users import a batch of content, then start from a concrete task. The system generates structured output that can be copied, edited, and traced back to supporting evidence.

AI Workflow

The system is built on a RAG workflow: imported content is parsed, chunked, and indexed. When users submit a task, the system retrieves relevant passages from the current content set and generates structured results. Key conclusions are connected to citation evidence that shows original text snippets, not only source titles.

Memory System

On top of RAG, Revive adds task preference memory to remember how users apply knowledge to complete work. It captures preferred output structures, citation habits, writing style, and negative preferences, then uses them as soft constraints during generation so results gradually fit real work habits.

REFINE illustration

AI Trend Agent

REFINE

An AI trend-generation Agent for the AI industry, designed to filter high-value content from noisy information streams and turn it into structured outputs that can be reviewed over time.

MVP completed

Multi-AgentLLM-as-JudgeInformation FilteringEvaluation SystemPrompt Iteration

Problem

AI product managers need to continuously track model, product, technology, and business updates, but daily information sources mix promotional content, SEO articles, and repetitive summaries. The signal-to-noise ratio is low, and traditional reading often leads to information being consumed and forgotten instead of becoming reusable product judgment.

Target Users

AI product managers, operators, and knowledge workers who need to follow AI industry updates every day and turn external information into competitor observations, product judgment, and topic inputs.

Existing Alternatives

Newsletters, social platforms, X, tech media, and Perplexity can help users access information, but they still rely heavily on manual filtering and lack stable quality judgment, structured accumulation, and continuous tracking around personal focus areas.

Product Solution

Refine is not simply an AI tool that automatically writes trending topics. It is an information-filtering and trusted-accumulation system for AI PM workflows. The product aggregates technology media RSS content, then uses Agents to judge, distill, and integrate the information into a low-noise, reviewable AI industry daily brief.

AI Workflow

The workflow is designed as a four-step Agent chain: search, judge, distill, and write. Search handles content recall, judge handles quality scoring, distill creates structured summaries, and write integrates the daily brief. With modular decomposition, recall gaps, misjudgment, summary distortion, and writing quality issues can be diagnosed separately.

Project Highlights

By aggregating RSS sources, Refine improves recall quality. Around the judging Agent, it builds a small-sample cold-start evaluation system, defines a three-dimensional scoring rubric, and calibrates LLM-as-Judge with a human golden set, reaching a 90% human-AI agreement rate.

Frequently askedquestions

A quick overview of how I think about AI product work, what this portfolio demonstrates, and where interviewers can start.

AI is transforming the traditional internet industry. In the past, product validation cycles were long; today, product managers can use large-model capabilities to quickly vibe code interactive versions and validate product value in real scenarios. I want to move into AI because it not only improves the efficiency of validating product ideas, but also places higher demands on scenario judgment, technical understanding, evaluation awareness, and system design. These are the directions I want to develop in over the long term.

These two projects mainly demonstrate my ability to narrow scenarios, design AI product workflows, handle model boundaries, and think in terms of evaluation. Refine helped me understand the issues Agents face in information filtering, quality judgment, writing integration, and LLM-as-Judge evaluation. Revive led me to design a complete loop from content import to structured output around RAG, trustworthy citations, task reuse, and preference memory. Compared with simply writing PRDs, I care more about placing AI capabilities into real workflows and validating value through runnable products.

Calling a large model is only the underlying capability. The real product challenge is how to place the model inside a controllable, trustworthy, and verifiable workflow. Refine is not focused on "letting a model write daily reports," but on using a judging Agent and evaluation system to filter low-quality information while handling decision conflicts across multiple Agent modules. Revive is also not simply about "uploading materials for AI to summarize." It uses RAG citations to keep evidence trustworthy, then applies task preference memory so outputs continue to fit the user's habits while avoiding memory contaminating content evidence.

Product thinking

A reserved area for future essays on AI product reviews, methods, and reflections.

2026.06

The value of RAG products is not just search, but task-based knowledge reuse

A reflection on how Revive turns retrieval into an actionable product loop.

2026.06

In Agent product design, boundary control matters more than automation

A product breakdown of Agent workflows through planning, tool calling, and failure recovery.

Hiryan Hang

Let's work together

Contact

If you'd like to learn more about me, feel free to reach out anytime.

Emailhiryanhang@gmail.com
Phone / WeChat15958155750
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