748
Then , a new CNN classification model with 11 layers based on weld image was designed to identify weld penetration defects .
 concept or principle: classification; engineering feature: weld; concept or principle: image; engineering feature: designed; concept or principle: weld penetration defects
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 concept or principle: classification; engineering feature: weld; concept or principle: image; engineering feature: designed; concept or principle: weld penetration defects