Patent ID: 6934405
Filing Date: 2005-08-23
Classification: G06K

Abstract:
1. An address realing method with at least two processing steps controlled by parameters, which is optimized by means of learning and testing phases, parameters being automatically adapted by learning methods known per so on the basis of a learning sample and the performance of the address reading being determined on the basis of a test sample with the parameters from the learning phase, each processing step receiving as an input the values of its parameters and processed and stored data from previous processing steps, at least one processing step receiving the random sample elements as the necessary input and one processing step producing the reading result as a performance, characterized by the following steps: all free parameters which cannot be automatically adapted in the learning phase with the learning sample are assigned costs; fixing of a cost threshold; modification of a number of free parameters lying below the cost threshold on the basis of an optimization strategy known per se, taking all the already determined performances of parameter-value allocations into account; execution of the learning phase on the basis of the learning sample, beginning with the earliest processing step of which the free parameters have been modified; execution of the testing phase on the basis of the test sample, beginning with the earliest processing step of which the parameters have been modified, and determination of the performance of the address reading for the current parameter values; further modification on the basis of an optimization strategy of free parameters which lie below the fixed cost threshold and subsequent execution of the learning and testing phases until a fixed performance is achieved or until a fixed number of learning and testing phases are executed; fixing of a new cost threshold and modification of one or more free parameters lying below the cost threshold on the basis of an optimization strategy and execution of the learning and testing phases with determination of the performance until a fixed performance is obtained or until a fixed number of learning and testing phases are executed; modification of the cost thresholds and implementation of the steps described above until a fixed performance of the address reading as a whole has been achieved or fixed overall costs have been exceeded; reading of current addresses with the adapted parameters.