public FrameSplitter(Frame dataset, float[] ratios, Key[] destKeys, Key jobKey) {
assert ratios.length > 0 : "No ratio specified!";
assert ratios.length < 100 : "Too many frame splits demanded!";
this.dataset = dataset;
this.ratios = ratios;
this.destKeys =
destKeys != null ? destKeys : Utils.generateNumKeys(dataset._key, ratios.length + 1);
assert this.destKeys.length == this.ratios.length + 1
: "Unexpected number of destination keys.";
this.jobKey = jobKey;
}
