Large-Scale Coarse-to-Fine Object Retrieval Ontology and Deep Local Multitask Learning

Table 3

Summary of the contribution of each method for each criterion.

Methods	Attribute learning model based on deep features with SVM classifiers (Figure 1)	Attribute learning model based on adaptive attribute domain with independent deep neural networks (Figure 2)	Attribute learning model based on the end-to-end deep neural network as a shared block with adaptive loss functions (Figure 3)	Our proposed deep local multitask learning
Inner-group correlation	Not focused	Focused	Focused	Focused
Intergroup correlation	Not focused	Focused	Focused	Not focused
Imbalanced data solving	Not focused	Not focused	Focused	Focused
Transfer learning	Feedforward only	Applied in each individual network	Not focused but can be applied	Focused
Large-scale data adaption	Not focused	Limited	Focused	Focused
Ontology	Not focused	Not focused but can be applied	Not focused but can be applied	Focused