Meituan LongCat Interaction Team Releases WOWService Large Model Interaction System Technical Report

Meituan LongCat Interaction Team Releases WOWService Large Model Interaction System Technical Report
# WOWService Large Model Interaction System — Technical Report Summary

## Industry Context & Challenges

In the **local life services sector**, implementing large models faces a **“triple dilemma”**:

1. **General vs. Domain-Specific Alignment** — Hard to adapt general capabilities to specialized business needs.
2. **Reliability vs. Personalization** — Balancing stable service with customized user experiences in complex scenarios.
3. **Data Costs & Long Cycles** — High-quality data is expensive and training takes too long, raising development difficulty.

Additionally, the industry **lacks reusable frameworks** and **real-world optimization solutions**, resulting in **low deployment efficiency**.

**Key Question:**  
How can we break the stalemate and achieve the optimal balance of **experience** and **efficiency**?

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## WOWService: An Overview

Leveraging Meituan’s deployment experience in **intelligent customer service** and **multi-business scenarios**, the **LongCat team** released:

🔗 **Technical Report:** [https://arxiv.org/pdf/2510.13291](https://arxiv.org/pdf/2510.13291)

WOWService integrates:

- **Multi-Agent Collaboration**
- **Reinforcement Learning**
- **Domain Knowledge Enhancement**

Key capabilities:

- Handles complex, multi-task instructions with **human-machine collaborative annotation**, **model self-critique**, and **knowledge rewriting**.
- Achieves **similar results with only 10% of the annotated data** compared to traditional small models.
- Covers dozens of Meituan business scenarios.
- **Outperforms the Base model in 11 metrics**.
- Enables **continuous self-evolution** through data and knowledge integration.

---

## Core Technical Frameworks

### 1. Data & Knowledge Dual-Drive  
**Goal:** Full-scope evolution for business scenarios.

- Combines **structured business knowledge** (rules, process specs) with **large-scale real interaction data**.
- Balances **knowledge vs. dataset** ratio to enhance compliance.
- Reinforcement learning strengthens adherence to rules in dynamic environments.

![image](https://blog.aitoearn.ai/content/images/2025/11/img_001-123.png)

---

### 2. Self-Optimization Training (SRT)  
**Goal:** Self-evolving intelligent interaction.

Steps:

1. **Positive Sample Selection** — Picks excellent cases from service logs, adding them to the training set.
2. **Negative Sample Analysis** — Identifies low-quality outputs, rewrites dialogues into preference comparison data.
3. **Autonomous Data Loop** — Automates collection, filtering, and evaluation of dialogues for continuous improvement.

![image](https://blog.aitoearn.ai/content/images/2025/11/img_002-105.png)

---

### 3. Four-Phase Training Pipeline  
**Goal:** Systematic upgrade of interaction capabilities.

Phases:

1. **Continual Pre-Training (CPT)** — Retains general + domain strength via adaptive data mixing.
2. **Supervised Fine-Tuning (SFT)** — Uses lightweight, high-quality datasets to align with domain styles.
3. **Direct Preference Optimization (DPO)** — Adjusts outputs toward human expectations.
4. **Reinforcement Learning (RL)** — Hybrid “data + knowledge” drive with refined reward systems for complex reasoning.

![image](https://blog.aitoearn.ai/content/images/2025/11/img_004-74.png)  
![image](https://blog.aitoearn.ai/content/images/2025/11/img_005-65.png)

---

### 4. Multi-Agent Collaboration Mechanism  
**Goal:** Flexible, scenario-oriented cooperation.

Architecture:

- **Main Agent** — Manages conversations and decision-making.
- **Specialized Sub-Agents** — Handle tasks like outbound calls, multimodal understanding, proactive collaboration.
- **Dynamic Invocation** — Main agent calls sub-agents as needed and integrates outputs.
- **Handoff Mode** — Seamless context transfer among agents to maintain reliability.

Example:  
A **Proactive Collaboration Agent** detects user needs, switches contexts intelligently, and boosts satisfaction.

![image](https://blog.aitoearn.ai/content/images/2025/11/img_006-62.png)

---

## Experimental Results

![image](https://blog.aitoearn.ai/content/images/2025/11/img_007-63.png)

**Outcome:** WOWService beats the Base model in all **11 metrics**:

- **RR** — Repetition Rate  
- **SER** — Solution Effectiveness Rate  
- **QR** — Queue Rate  
- **FSR** — Full Score Rate  
- **AVG_F1** — Average F1 Score  
- **RF** — Recall Frequency  
- **SR_Acc** — Solution Accuracy  
- **UR** — Usability Rate  
- **DS_Acc** — Domain Accuracy  
- **USM1, USM2** — User Satisfaction Metrics

**Impact:**
- Stronger automation
- Higher closed-loop efficiency
- Better adaptability
- More accurate reasoning

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## Summary & Outlook

WOWService converts **data + knowledge dual-drive**, **SRT**, and **multi-agent collaboration** into **deployable, high-efficiency AI solutions**.

**Key Achievements:**
- Domain adaptation with minimal extra data
- Reduced annotation cost to **10%** of traditional methods
- Continuous improvement via four-stage training pipeline
- Stable multi-agent cooperation in complex business environments

**Future Directions:**
- Deeper daily-life integration
- Agent-based reinforcement learning for tool usage
- Enhanced multimodal understanding

---

## Related Tools & Ecosystem

Open-source platforms such as **[AiToEarn官网](https://aitoearn.ai/)** help creators and enterprises:

- Generate AI-driven content
- Publish across **Douyin, Kwai, WeChat, Bilibili, Xiaohongshu, Facebook, Instagram, LinkedIn, Threads, YouTube, Pinterest, X (Twitter)**
- Analyze and rank models
- Monetize AI creativity

**Potential Synergy:** Integrating AiToEarn with WOWService could enable **large-scale, efficient deployment** of intelligent interactive services in both enterprise and creator economies.

![image](https://blog.aitoearn.ai/content/images/2025/11/img_003-91.png)

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