Examples with New primal.Verbs.New used on opensource projects

Example 1 with New

use of primal.Verbs.New in project suite by stupidsing.

the class NioClusterMapTest method testClusterMap.

@Test
public void testClusterMap() throws IOException {
    var nNodes = 3;
    var peers = forInt(nNodes).map2(i -> "NODE" + i, i -> new InetSocketAddress(localHost, 3000 + i)).toMap();
    var clusters = // 
    Read.from2(// 
    peers).keys().map2(name -> name, // 
    name -> ex(() -> new NioCluster(name, peers))).toMap();
    for (var cluster : clusters.values()) cluster.start();
    var peerNames = new ArrayList<>(peers.keySet());
    var clMap = // 
    Read.from2(// 
    peers).keys().map2(name -> name, // 
    name -> new NioClusterMap<Integer, String>(clusters.get(name))).toMap();
    Sleep.quietly(5 * 1000);
    System.out.println("=== CLUSTER FORMED (" + LocalDateTime.now() + ") ===\n");
    Source<NioClusterMap<Integer, String>> peerf = () -> clMap.get(peerNames.get(random.nextInt(nNodes)));
    Int_Obj<Sink<Runnable>> setf = i -> cont -> peerf.g().set(i, Integer.toString(i), v0 -> cont.run(), fail);
    Int_Obj<Sink<Runnable>> getf = i -> cont -> peerf.g().get(i, v -> {
        assertEquals(Integer.toString(i), v);
        cont.run();
    }, fail);
    Fun<NioCluster, Sink<Runnable>> closef = cluster -> cont -> {
        try {
            cluster.stop();
            System.out.println("=== CLUSTER STOPPED (" + LocalDateTime.now() + ") ===\n");
        } catch (IOException ex) {
            fail(ex);
        }
        cont.run();
    };
    var sinks = // 
    Streamlet.concat(// 
    forInt(9).map(setf), // 
    forInt(9).map(getf), Read.from2(clusters).values().map(closef)).toList();
    new Object() {

        public void run(int i) {
            if (i < sinks.size())
                sinks.get(i).f(() -> run(i + 1));
        }
    }.run(0);
    Read.from2(clusters).values().map(cluster -> New.thread(cluster::run)).collect(Start::thenJoin);
    for (var cluster : clusters.values()) cluster.close();
}

Example 2 with New

use of primal.Verbs.New in project suite by stupidsing.

the class StatisticalArbitrageTest method testReturnDistribution.

// Naive Bayes return prediction
@Test
public void testReturnDistribution() {
    var prices = cfg.dataSource(Instrument.hsiSymbol).range(period).prices;
    var maxTor = 16;
    var differencesByTor = // 
    forInt(1, maxTor).mapIntObj(tor -> {
        var differences = ts.differences(tor, prices);
        Arrays.sort(differences);
        return differences;
    }).toMap();
    for (var tor = 1; tor < maxTor; tor++) System.out.println("tor = " + tor + ", " + stat.moments(differencesByTor.get(tor)));
    Int_Flt predictFun = t -> {
        var cpsArray = // 
        forInt(1, maxTor).map(tor -> {
            var differences = differencesByTor.get(tor);
            var length = differences.length;
            // cumulative probabilities
            var cps = new double[11];
            for (int cpsi = 0, predDiff = -500; predDiff <= 500; cpsi++, predDiff += 100) {
                var f = prices[t - 1] + predDiff - prices[t - tor];
                var i = 0;
                while (i < length && differences[i] < f) i++;
                cps[cpsi] = i / (double) length;
            }
            return cps;
        }).toArray(double[].class);
        var probabilities = new HashMap<Double, Double>();
        for (int cpsi = 0, predDiff = -500; predDiff < 500; cpsi++, predDiff += 100) {
            var cpsi_ = cpsi;
            var sum = // 
            forInt(1, maxTor).map(// 
            i -> i).toDouble(AsDbl.sum(tor -> {
                var probability = cpsArray[tor - 1][cpsi_ + 1] - cpsArray[tor - 1][cpsi_];
                return 1d / probability;
            }));
            probabilities.put(predDiff + 100d / 2d, sum);
        }
        return // 
        Read.from2(// 
        probabilities).sortByValue(// 
        (p0, p1) -> Double.compare(p1, p0)).first().k.floatValue();
    };
    for (var t = maxTor + 1; t < prices.length; t++) {
        var predicted = prices[t - 1] + predictFun.apply(t);
        System.out.println(// 
        "t = " + t + ", actual = " + // 
        prices[t] + ", predicted = " + predicted);
    }
}

Example 3 with New

use of primal.Verbs.New in project suite by stupidsing.

the class KmeansCluster method kNearestNeighbor.

public int kNearestNeighbor(List<float[]> points, float[] point0) {
    var map = new IntObjMap<AtomicInteger>();
    // 
    Read.from(// 
    points).index().map(// 
    (i, point) -> IntDblPair.of(i, sqdist(point0, point))).sortBy(// 
    pair -> pair.t1).take(// 
    points.size()).forEach(bin -> map.computeIfAbsent(bin.t0, c -> new AtomicInteger()).incrementAndGet());
    return ReadInt.from2(map).min((k, v) -> -v.v.get()).k;
}