Exemplo n.º 1
0
    def test_pc_stable_max_conds_dim(self):

        # Setting up strict test level
        pc_alpha = 0.05  #[0.01, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5]
        tau_max = 2
        alpha_level = 0.01

        # true_parents_here = {0: [],
        #                1: [(1, -1), (0, -1)],
        #                2: []
        #                }

        dataframe = pp.DataFrame(self.data)

        cond_ind_test = ParCorr(verbosity=verbosity)

        pcmci = PCMCI(selected_variables=None,
                      dataframe=dataframe,
                      cond_ind_test=cond_ind_test,
                      verbosity=verbosity)

        pcmci.run_pc_stable(
            selected_links=None,
            tau_min=1,
            tau_max=tau_max,
            save_iterations=False,
            pc_alpha=pc_alpha,
            max_conds_dim=2,
            max_combinations=1,
        )

        parents = pcmci.all_parents
        # print parents
        # print _get_parent_graph(true_parents)
        assert_graphs_equal(parents, self.true_parents)
Exemplo n.º 2
0
def run_pc_stable_parallel(j):
    """Wrapper around PCMCI.run_pc_stable estimating the parents for a single 
    variable j.

    Parameters
    ----------
    j : int
        Variable index.

    Returns
    -------
    j, pcmci_of_j, parents_of_j : tuple
        Variable index, PCMCI object, and parents of j
    """

    # CondIndTest is initialized globally below
    # Further parameters of PCMCI as described in the documentation can be
    # supplied here:
    pcmci_of_j = PCMCI(dataframe=dataframe,
                       cond_ind_test=cond_ind_test,
                       selected_variables=[j],
                       verbosity=verbosity)

    # Run PC condition-selection algorithm. Also here further parameters can be
    # specified:
    parents_of_j = pcmci_of_j.run_pc_stable(
        selected_links=selected_links,
        tau_max=tau_max,
        pc_alpha=pc_alpha,
    )

    # We return also the PCMCI object because it may contain pre-computed
    # results can be re-used in the MCI step (such as residuals or null
    # distributions)
    return j, pcmci_of_j, parents_of_j
Exemplo n.º 3
0
def run_pc_stable_parallel(j, dataframe, cond_ind_test, params):
    """Wrapper around PCMCI.run_pc_stable estimating the parents for a single 
    variable j.

    Parameters
    ----------
    j : int
        Variable index.

    Returns
    -------
    j, pcmci_of_j, parents_of_j : tuple
        Variable index, PCMCI object, and parents of j
    """

    N = dataframe.values.shape[1]

    # CondIndTest is initialized globally below
    # Further parameters of PCMCI as described in the documentation can be
    # supplied here:
    pcmci_of_j = PCMCI(
        dataframe=dataframe,
        cond_ind_test=cond_ind_test,
        selected_variables=[j],
        # var_names=var_names,
        verbosity=verbosity)

    # Run PC condition-selection algorithm. Also here further parameters can be
    # specified:
    if method_arg == 'pcmci':
        parents_of_j = pcmci_of_j.run_pc_stable(
            selected_links=params['selected_links'],
            tau_max=params['tau_max'],
            pc_alpha=params['pc_alpha'],
        )
    elif method_arg == 'gc':
        parents_of_j = {}
        for i in range(N):
            if i == j:
                parents_of_j[i] = [
                    (var, -lag) for var in range(N)
                    for lag in range(params['tau_min'], params['tau_max'] + 1)
                ]
            else:
                parents_of_j[i] = []
    elif method_arg == 'corr':
        parents_of_j = {}
        for i in range(N):
            parents_of_j[i] = []

    # We return also the PCMCI object because it may contain pre-computed
    # results can be re-used in the MCI step (such as residuals or null
    # distributions)
    return j, pcmci_of_j, parents_of_j
Exemplo n.º 4
0
def run_pc_stable_parallel(j):
    """Wrapper around PCMCI.run_pc_stable estimating the parents for a single 
    variable j.

    Parameters
    ----------
    j : int
        Variable index.

    Returns
    -------
    j, pcmci_of_j, parents_of_j : tuple
        Variable index, PCMCI object, and parents of j
    """

    # CondIndTest is initialized globally below
    # Further parameters of PCMCI as described in the documentation can be
    # supplied here:
    pcmci_of_j = PCMCI(
        dataframe=dataframe,
        cond_ind_test=cond_ind_test,
        selected_variables=[j],
        verbosity=verbosity)

    # Run PC condition-selection algorithm. Also here further parameters can be
    # specified:
    parents_of_j = pcmci_of_j.run_pc_stable(
                      selected_links=selected_links,
                      tau_max=tau_max,
                      pc_alpha=pc_alpha,
            )

    # We return also the PCMCI object because it may contain pre-computed 
    # results can be re-used in the MCI step (such as residuals or null
    # distributions)
    return j, pcmci_of_j, parents_of_j