public static InstanceList readFromFile(String inputfile) throws IOException {
BufferedReader in = new BufferedReader(new FileReader(inputfile));
InstanceList instanceList = new InstanceList();
String line;
while ((line = in.readLine()) != null) {
String tokens[] = line.split(" ");
int label = Integer.valueOf(tokens[0]);
Instance ins = new Instance(label);
for (int i = 1; i < tokens.length; i++) {
String pair[] = tokens[i].split(":");
int attr = Integer.valueOf(pair[0]);
double value = Double.valueOf(pair[1]);
ins.addAttribute(attr, value);
instanceList.addInstance(ins);
}
}
return instanceList;
}
