Python JavaObject.new_instance示例

示例#1

def weka_version():
    """
    Determines the version of Weka in use.
    :return: the version
    :rtype: str
    """
    jobj = JavaObject(JavaObject.new_instance(classname="weka.core.Version"))
    return str(jobj)

示例#2

文件： version.py 项目： eulersantana/python-weka-wrapper

def weka_version():
    """
    Determines the version of Weka in use.
    :return: the version
    :rtype: str
    """
    jobj = JavaObject(JavaObject.new_instance(classname="weka.core.Version"))
    return str(jobj)

示例#3

def system_info():
    """
    Returns a dictionary generated from the output of weka.core.SystemInfo.

    :return: the system info as dictionary
    :rtype: dict
    """
    jobj = JavaObject.new_instance("weka.core.SystemInfo")
    info = javabridge.call(jobj, "getSystemInfo", "()Ljava/util/Hashtable;")
    return javabridge.jdictionary_to_string_dictionary(info)

示例#4

文件： classifiers.py 项目： eulersantana/python-weka-wrapper

def generate_thresholdcurve_data(evaluation, class_index):
    """
    Generates the threshold curve data from the evaluation object's predictions.
    :param evaluation: the evaluation to obtain the predictions from
    :type evaluation: Evaluation
    :param class_index: the 0-based index of the class-label to create the plot for
    :type class_index: int
    :return: the generated threshold curve data
    :rtype: Instances
    """
    jtc = JavaObject.new_instance("weka.classifiers.evaluation.ThresholdCurve")
    pred = javabridge.call(evaluation.jobject, "predictions", "()Ljava/util/ArrayList;")
    result = Instances(
        javabridge.call(jtc, "getCurve", "(Ljava/util/ArrayList;I)Lweka/core/Instances;", pred, class_index))
    return result

示例#5

文件： classifiers.py 项目： Joel-Venzke/Automated-nmr-assignment

def generate_thresholdcurve_data(evaluation, class_index):
    """
    Generates the threshold curve data from the evaluation object's predictions.
    :param evaluation: the evaluation to obtain the predictions from
    :type evaluation: Evaluation
    :param class_index: the 0-based index of the class-label to create the plot for
    :type class_index: int
    :return: the generated threshold curve data
    :rtype: Instances
    """
    jtc = JavaObject.new_instance("weka.classifiers.evaluation.ThresholdCurve")
    pred = javabridge.call(evaluation.jobject, "predictions", "()Ljava/util/ArrayList;")
    result = Instances(
        javabridge.call(jtc, "getCurve", "(Ljava/util/ArrayList;I)Lweka/core/Instances;", pred, class_index))
    return result

示例#6

def main():
    """
    Just runs some example code.
    """

    # generic JavaObject stuff
    helper.print_title("Generic stuff using weka.core.SystemInfo")
    info = JavaObject(JavaObject.new_instance(classname="weka.core.SystemInfo"))
    jwrapper = info.jwrapper
    print("toString() method:")
    print(jwrapper.toString())

    # random
    helper.print_title("Random")
    rnd = Random(1)
    for i in range(10):
        print(rnd.next_double())
    for i in range(10):
        print(rnd.next_int(100))

    # single index
    helper.print_title("SingleIndex")
    si = SingleIndex(index="first")
    upper = 10
    si.upper(upper)
    print(str(si) + " (upper=" + str(upper) + ")\n -> " + str(si.index()))
    si.single_index = "3"
    si.upper(upper)
    print(str(si) + " (upper=" + str(upper) + ")\n -> " + str(si.index()))
    si.single_index = "last"
    si.upper(upper)
    print(str(si) + " (upper=" + str(upper) + ")\n -> " + str(si.index()))

    # range
    helper.print_title("Range")
    rng = Range(ranges="first")
    upper = 10
    invert = False
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "3"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "last"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "first-last"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "3,4,7-last"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "3,4,7-last"
    rng.upper(upper)
    invert = True
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))

    # tag
    helper.print_title("Tag")
    tag = Tag(ident=1, ident_str="one")
    print("tag=" + str(tag) + ", ident=" + str(tag.ident) + ", readable=" + tag.readable)
    tag.ident = 3
    print("tag=" + str(tag) + ", ident=" + str(tag.ident) + ", readable=" + tag.readable)
    tag = Tag(ident=2, ident_str="two", readable="2nd tag")
    print("tag=" + str(tag) + ", ident=" + str(tag.ident) + ", readable=" + tag.readable)

示例#7

文件： classes.py 项目： fracpete/python-weka-wrapper-examples

def main():
    """
    Just runs some example code.
    """

    # generic JavaObject stuff
    helper.print_title("Generic stuff using weka.core.SystemInfo")
    info = JavaObject(JavaObject.new_instance("weka.core.SystemInfo"))
    jwrapper = info.jwrapper
    print("toString() method:")
    print(jwrapper.toString())

    # random
    helper.print_title("Random")
    rnd = Random(1)
    for i in xrange(10):
        print(rnd.next_double())
    for i in xrange(10):
        print(rnd.next_int(100))

    # single index
    helper.print_title("SingleIndex")
    si = SingleIndex(index="first")
    upper = 10
    si.upper(upper)
    print(str(si) + " (upper=" + str(upper) + ")\n -> " + str(si.index()))
    si.single_index = "3"
    si.upper(upper)
    print(str(si) + " (upper=" + str(upper) + ")\n -> " + str(si.index()))
    si.single_index = "last"
    si.upper(upper)
    print(str(si) + " (upper=" + str(upper) + ")\n -> " + str(si.index()))

    # range
    helper.print_title("Range")
    rng = Range(ranges="first")
    upper = 10
    invert = False
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "3"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "last"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "first-last"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "3,4,7-last"
    rng.upper(upper)
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))
    rng.ranges = "3,4,7-last"
    rng.upper(upper)
    invert = True
    rng.invert = invert
    print(str(rng.ranges) + " (upper=" + str(upper) + ", invert=" + str(invert) + ")\n -> " + str(rng.selection()))

    # tag
    helper.print_title("Tag")
    tag = Tag(ident=1, ident_str="one")
    print("tag=" + str(tag) + ", ident=" + str(tag.ident) + ", readable=" + tag.readable)
    tag.ident = 3
    print("tag=" + str(tag) + ", ident=" + str(tag.ident) + ", readable=" + tag.readable)
    tag = Tag(ident=2, ident_str="two", readable="2nd tag")
    print("tag=" + str(tag) + ", ident=" + str(tag.ident) + ", readable=" + tag.readable)