Marine Animal Classification with Correntropy Loss Based Multi-view Learning
This work addresses classification challenges for marine biologists analyzing animal behavior and distribution, but it is incremental as it extends existing methods with a robust loss function.
The paper tackled marine animal classification by developing multi-view learning algorithms using correntropy loss to integrate features or dissimilarity matrices, resulting in enhanced classification rates and noise suppression in simulated and real-world imagery.
To analyze marine animals behavior, seasonal distribution and abundance, digital imagery can be acquired by visual or Lidar camera. Depending on the quantity and properties of acquired imagery, the animals are characterized as either features (shape, color, texture, etc.), or dissimilarity matrices derived from different shape analysis methods (shape context, internal distance shape context, etc.). For both cases, multi-view learning is critical in integrating more than one set of feature or dissimilarity matrix for higher classification accuracy. This paper adopts correntropy loss as cost function in multi-view learning, which has favorable statistical properties for rejecting noise. For the case of features, the correntropy loss-based multi-view learning and its entrywise variation are developed based on the multi-view intact space learning algorithm. For the case of dissimilarity matrices, the robust Euclidean embedding algorithm is extended to its multi-view form with the correntropy loss function. Results from simulated data and real-world marine animal imagery show that the proposed algorithms can effectively enhance classification rate, as well as suppress noise under different noise conditions.