For the Patent Mining Task evaluation results, please refer to the PAT-MN overview paper "Overview of the Patent Mining Task at the NTCIR-8 Workshop".

• Subtask of Research Paper Classification
• Cross-system comparison at subclass level (Japanese)
• Cross-system comparison at main group level (Japanese)
• Cross-system comparison at subgroup level (Japanese)
• Cross-system comparison at subclass level (English)
• Cross-system comparison at main group level (English)
• Cross-system comparison at subgroup level (English)
• Cross-system comparison at subclass level (J2E)
• Cross-system comparison at main group level (J2E)
• Cross-system comparison at subgroup level (J2E)
• Subtask of Technical Trend Map Creation
• cross-system comparisons (Japanese papers)
• cross-system comparisons (Japanese patents)
• cross-system comparisons (English papers)
• cross-system comparisons (English patents)