Traditional antique valuation relies heavily on the personal experience and subjective judgment of specialists. The value of a porcelain object is often decided by a seasoned dealer or expert drawing on decades of accumulated "eye." That approach has real value, but it also has clear limits: it is difficult to quantify, lacks transparency, and can be influenced by market sentiment.
A New Data-Driven Model
Xiyu Tang X WING's AI valuation system is built on the following core datasets:
- 54,331 filtered specialist porcelain auction records
- Coverage across 7 major auction houses, including Sotheby's, Christie's, and China Guardian Hong Kong
- Date range: 2000-2025
- All major Ming and Qing ceramic categories
Technical Architecture
Step 1: Feature Extraction
Using computer vision and natural language processing, the system extracts from images and text descriptions:
- Dynasty and reign mark
- Form and dimensions
- Decorative subject
- Glaze color and technical features
- Condition and state of preservation
Step 2: Comparable-Lot Retrieval
A two-stage retrieval process combines CLIP image embeddings with semantic text search:
- Text-based semantic matching recalls an initial pool of candidate lots
- Visual-vector similarity then reranks the candidates to identify the closest auction comparables
Step 3: Price-Range Estimation
Based on weighted analysis of comparable lots, the system outputs:
- P10: conservative estimate (10th percentile)
- P50: median market estimate
- P90: optimistic estimate (90th percentile)
It also applies time-trend adjustments to reflect recent changes in market conditions.
Compared with Traditional Valuation
| Dimension | Traditional Expert Valuation | AI Valuation System |
|---|---|---|
| Speed | Days to weeks | Response in seconds |
| Transparency | Basis often difficult to explain | Shows comparable lots |
| Consistency | Varies by expert | Based on a unified model |
| Coverage | Limited by the expert's field | Covers all categories |
| Limitation | Human judgment remains valuable | Sparse data for rare one-off works |
Practical Use
AI valuation is best suited to:
- Quickly understanding the likely market range of an object
- Establishing a reference reserve before auction
- Providing an initial basis for insurance valuation
For important objects valued above $100,000, AI valuation should be used as a reference point alongside in-hand inspection by a qualified specialist.
Experience our free valuation service now ->