The invention discloses a cross-
modal retrieval method and device for multi-
modal data, cross-
modal retrieval equipment for multi-
modal data, and a computer readable storage medium. The method comprises the steps: inputting training sample data of different modals into
deep neural networks corresponding to all modals in batches, and obtaining the sample data features of all training sample data; respectively mapping each sample data feature into a
common space, and calculating a corresponding
loss function according to the intra-class low-rank loss constraint and
semantic consistency constraint of each training sample data of different
modes of the same class; adjusting network parameters of the deep neural network by using a
loss function, and determining a target
feature extraction model; and, after target data and to-be-retrieved data of different
modes are obtained, calling the target
feature extraction model to perform cross-modal retrieval operation, and then obtaining a retrieval sorting result of the to-be-retrieved data corresponding to the target data, so that the target
feature extraction model can extract data features with higher quality, thereby improving the accuracyof cross-modal retrieval of the multi-
modal data.