The goal is to ensure quality for a period of time after you buy it. That can be several days to several weeks, depending on the item. For instance, milk, assuming proper refrigeration, should last five to seven days past its sell-by date before turning sour.
An autoencoder is a neural network that is trained in an unsupervised fashion. The goal of an autoencoder is to find a more compact representation of the data by learning an encoder, which transforms the data to their corresponding compact representation, and a decoder, which reconstructs the original data.
A encoder is a measurement device which converts mechanical motion into electronic signals. The encoder is. connected to the motors and outputs digital pulses which are converted by the NXT into usable information for. programming our robots. The code shown pictured above shows a typical use of an encoder.