Method main

src/com/winvector/logistic/LogisticTrain.java:232–302

> logisticModel <- glm(rating!='unacc' ~ buying + maintinance + doors + persons + lug_boot +safety,family=binomial(link = "logit"),data=CarData) > table <- table(CarData$rating!='unacc',predict(logisticModel,type='response')>=0.5) > (table[1,1]+table[2,2])/(table[1,1]+table[1,2] + table[2,1] +table[

(final String[] args)

	 * @throws InstantiationException 
	 */
	public static void main(final String[] args) throws IOException, ParseException, URISyntaxException, org.apache.commons.cli.ParseException, SQLException, InstantiationException, IllegalAccessException, ClassNotFoundException {
		final Log log = LogFactory.getLog(LogisticTrain.class);
		log.info("start LogisticTrain\t" + new Date());
		final CommandLine cl = parseCommandLine(args);
		final String formulaStr = cl.getOptionValue(FORMULAKEY);       // example: rating ~ buying + maintinance + doors + persons + lug_boot + safety
		final String weightKey = cl.getOptionValue(WEIGHTKEY);
		final Formula f = new Formula(formulaStr);
		final boolean memorize = cl.hasOption(MEMKEY);
		DBHandle handle = null;
		Statement stmt = null;
		final Iterable<BurstMap> trainSource;
		final File resultFileSer = valueAsFile(cl,RESULTSERKEY);
		final File resultFileTSV = valueAsFile(cl,RESULTTSVKEY);
		{
			final Iterable<BurstMap> origSource;
			if(cl.getOptionValue(TRAINURIKEY)!=null) {
				char sep = '\t';
				if(cl.getOptionValue(TRAINSEP)!=null) {
					sep = cl.getOptionValue(TRAINSEP).charAt(0);
				}
				final URI trainURI = new URI(cl.getOptionValue(TRAINURIKEY));
				log.info(" source URI: " + trainURI.toString());
				origSource = new TrivialReader(trainURI,sep,null,false,null,memorize);
			} else {
				final URI dbProps = new URI(cl.getOptionValue(TRAINHDLKEY));
				final String dbTable = cl.getOptionValue(TRAINTBLKEY);
				handle = DBUtil.buildConnection(dbProps, true);
				stmt = handle.conn.createStatement();
				log.info(" source db: " + handle);
				origSource = DBIterable.buildSource(handle, stmt, dbTable, f.allTerms()); // TODO: deep intern db sources also
				log.info(" query: " + origSource);
			}
			if(memorize) {
				final Ticker ticker = new Ticker("LogisticTrain-memorize data");
				final ArrayList<BurstMap> list = new ArrayList<BurstMap>();
				for(final BurstMap row: origSource) {
					ticker.tick();
					list.add(row);
				}
				trainSource = list;
				if(null!=stmt) {
					stmt.close();
					stmt = null;
				}
				if(null!=handle) {
					handle.conn.close();
					handle = null;
				}
			} else {
				trainSource = origSource;
			}
		}
		log.info("formula: " + f);
		final LogisticTrain trainer;
		if(cl.getOptionValue(TRAINCLASSKEY)!=null) {
			trainer = (LogisticTrain)Class.forName(cl.getOptionValue(TRAINCLASSKEY)).newInstance();
		} else {
			trainer = new LogisticTrain();