Abstract: Disclosed are a computer-implemented method, a system and a computer program product for feature processing. In the computer-implemented method for feature processing, two input features selected from multiple features of each sample in a sample set are projected to one resulting feature by one or more processing units based on a specified curve. The sample set is updated by replacing the two input features with the one resulting feature for each sample in the sample set by one or more processing units. The projecting and the updating for the sample set are repeated by one or more processing units until the number of features of each sample in the sample set reaches a predetermined criterion.

Abstract: A lamp, a light emitting module, and a combined lens thereof are provided. The combined lens includes a first lens portion and a second lens portion. The first lens portion has a surrounding lateral surface, an incident surface arranged inside of the surrounding lateral surface, and an exit surface opposite to the incident surface. The second lens portion includes a light diffusion surface and a light output surface. The light diffusion surface is spaced apart from and face toward the exit surface, and has a plurality of light diffusion microstructures that are arranged on a projection region defined by orthogonally projecting the exit surface onto the light diffusion surface. The combined lens is configured to guide light therein to travel out through the light output surface by passing through the exit surface and the light diffusion microstructures.