1neural networks (3 points) the dataset available in the file activity-small. csv [1] in blackboard contains data in three dimensions from a single chest-mounted accelerometer. the dataset is intended for activity recognition research purposes. it provides challenges for identification of people using motion patterns. the predictor variables are in three dimensions: x-acceleration, y-acceleration, and z-acceleration. the class label is one of {0,1,2,3}, where 0 implies "working on the computer,", 1 implies "standing up, walking, and going up/down the stairs,", 2 implies "walking," and 3 implies "talking while standing."