Methods, systems, and articles of manufacture of the present invention may assist in planning, execution, and evaluation of advertising campaigns on the Internet. The functions performed by cognitive agent supplement other activities performed at a same time. Each position in the shift register corresponds to one clock cycle. The corners of the screen space tile are tested against a moving triangle edge in two-dimensional homogeneous space. Classifying an ECG signal can include analyzing the ECG signal using a stream of pulses generated by a sampler, extracting cardiac pulse features from a timing of the stream of pulses, and classifying the ECG signal based on the extracted cardiac pulse feature.