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A fuzzy-logic inference machine was applied as the core component for calculating speed change of bead deposition based on height error and previously applied change .
 concept or principle: inference; material: as; machine or equipment: core component; process characterization: bead; concept or principle: error
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: inference; material: as; machine or equipment: core component; process characterization: bead; concept or principle: error