diff --git a/causallearn/graph/GraphClass.py b/causallearn/graph/GraphClass.py index 09e8ccf1..cc2c314f 100644 --- a/causallearn/graph/GraphClass.py +++ b/causallearn/graph/GraphClass.py @@ -41,6 +41,9 @@ def __init__(self, no_of_var): self.labels = {} self.prt_m = {} # store the parents of missingness indicators self.mvpc = None + self.cardinalities = None # only works when self.data is discrete, i.e. self.test is chisq or gsq + self.is_discrete = False + self.citest_cache = dict() def set_ind_test(self, indep_test, mvpc=False): """Set the conditional independence test that will be used""" @@ -51,9 +54,20 @@ def set_ind_test(self, indep_test, mvpc=False): def ci_test(self, i, j, S): """Define the conditional independence test""" + # assert i != j and not i in S and not j in S if self.mvpc: return self.test(self.data, self.nx_skel, self.prt_m, i, j, S, self.data.shape[0]) - return self.test(self.data, i, j, S) + + i, j = (i, j) if (i < j) else (j, i) + ijS_key = (i, j, frozenset(S)) + if ijS_key in self.citest_cache: + return self.citest_cache[ijS_key] + # if discrete, assert self.test is chisq or gsq, pass into cardinalities + pValue = self.test(self.data, i, j, S, self.cardinalities) if self.is_discrete \ + else self.test(self.data, i, j, S) + self.citest_cache[ijS_key] = pValue + return pValue + def neighbors(self, i): """Find the neighbors of node i in adjmat""" @@ -61,13 +75,7 @@ def neighbors(self, i): def max_degree(self): """Return the maximum number of edges connected to a node in adjmat""" - nodes = range(len(self.G.graph)) - max_degree = 0 - for i in nodes: - len_neigh_i = len(self.neighbors(i)) - if len_neigh_i > max_degree: - max_degree = len_neigh_i - return max_degree + return max(np.sum(self.G.graph != 0, axis=1)) def find_arrow_heads(self): """Return the list of i o-> j in adjmat as (i, j)""" diff --git a/causallearn/search/ConstraintBased/FCI.py b/causallearn/search/ConstraintBased/FCI.py index a1237715..da9caefe 100644 --- a/causallearn/search/ConstraintBased/FCI.py +++ b/causallearn/search/ConstraintBased/FCI.py @@ -1,11 +1,14 @@ +citest_cache = dict() # added by haoyue@12/18/2021 + from queue import Queue from causallearn.graph.Edge import Edge from causallearn.graph.GraphNode import GraphNode from causallearn.utils.PCUtils.BackgroundKnowledge import BackgroundKnowledge -from causallearn.utils.cit import fisherz +from causallearn.utils.cit import fisherz, chisq, gsq from causallearn.utils.Fas import fas from causallearn.graph.Endpoint import Endpoint from causallearn.utils.ChoiceGenerator import ChoiceGenerator +import numpy as np class SepsetsPossibleDsep(): @@ -187,7 +190,15 @@ def get_cond_set(self, node_1, node_2, max_path_length): condSet = [self.graph.node_map[possParents[index]] for index in choice] choice = cg.next() - p_value = self.independence_test(self.data, self.graph.node_map[node_1], self.graph.node_map[node_2], tuple(condSet)) + X, Y = self.graph.node_map[node_1], self.graph.node_map[node_2] + X, Y = (X, Y) if (X < Y) else (Y, X) + XYS_key = (X, Y, frozenset(condSet)) + if XYS_key in citest_cache: + p_value = citest_cache[XYS_key] + else: + p_value = self.independence_test(self.data, X, Y, tuple(condSet)) + citest_cache[XYS_key] = p_value + independent = p_value > self.alpha if independent and noEdgeRequired: @@ -427,13 +438,30 @@ def doDdpOrientation(node_d, node_a, node_b, node_c, previous, graph, data, inde raise Exception("illegal argument!") path = getPath(node_d, previous) - p_value = independence_test_method(data, graph.node_map[node_d], graph.node_map[node_c], tuple([graph.node_map[nn] for nn in path])) + X, Y = graph.node_map[node_d], graph.node_map[node_c] + X, Y = (X, Y) if (X < Y) else (Y, X) + condSet = tuple([graph.node_map[nn] for nn in path]) + XYS_key = (X, Y, frozenset(condSet)) + if XYS_key in citest_cache: + p_value = citest_cache[XYS_key] + else: + p_value = independence_test_method(data, X, Y, condSet) + citest_cache[XYS_key] = p_value ind = p_value > alpha path2 = list(path) path2.remove(node_b) - p_value2 = independence_test_method(data, graph.node_map[node_d], graph.node_map[node_c], tuple([graph.node_map[nn2] for nn2 in path2])) + X, Y = graph.node_map[node_d], graph.node_map[node_c] + X, Y = (X, Y) if (X < Y) else (Y, X) + condSet = tuple([graph.node_map[nn2] for nn2 in path2]) + XYS_key = (X, Y, frozenset(condSet)) + if XYS_key in citest_cache: + p_value2 = citest_cache[XYS_key] + else: + p_value2 = independence_test_method(data, X, Y, condSet) + citest_cache[XYS_key] = p_value2 + ind2 = p_value2 > alpha if not ind and not ind2: @@ -571,6 +599,11 @@ def fci(dataset, independence_test_method = fisherz, alpha=0.05, depth=-1, max_p ------- graph : Causal graph ''' + def _unique(column): + return np.unique(column, return_inverse=True)[1] + + if independence_test_method == chisq or independence_test_method == gsq: + dataset = np.apply_along_axis(_unique, 0, dataset).astype(np.int64) ## ------- check parameters ------------ diff --git a/causallearn/search/ConstraintBased/PC.py b/causallearn/search/ConstraintBased/PC.py index 5f9829b2..ef635a25 100644 --- a/causallearn/search/ConstraintBased/PC.py +++ b/causallearn/search/ConstraintBased/PC.py @@ -11,16 +11,16 @@ def pc(data, alpha, indep_test, stable, uc_rule, uc_priority, mvpc=False, correction_name='MV_Crtn_Fisher_Z', - background_knowledge=None): + background_knowledge=None, verbose=False): if mvpc: return mvpc_alg(data=data, alpha=alpha, indep_test=indep_test, correction_name=correction_name, stable=stable, - uc_rule=uc_rule, uc_priority=uc_priority) + uc_rule=uc_rule, uc_priority=uc_priority, verbose=verbose) else: return pc_alg(data=data, alpha=alpha, indep_test=indep_test, stable=stable, uc_rule=uc_rule, - uc_priority=uc_priority, background_knowledge=background_knowledge) + uc_priority=uc_priority, background_knowledge=background_knowledge, verbose=verbose) -def pc_alg(data, alpha, indep_test, stable, uc_rule, uc_priority, background_knowledge=None): +def pc_alg(data, alpha, indep_test, stable, uc_rule, uc_priority, background_knowledge=None, verbose=False): ''' Perform Peter-Clark algorithm for causal discovery @@ -56,7 +56,7 @@ def pc_alg(data, alpha, indep_test, stable, uc_rule, uc_priority, background_kno start = time.time() cg_1 = SkeletonDiscovery.skeleton_discovery(data, alpha, indep_test, stable, - background_knowledge=background_knowledge) + background_knowledge=background_knowledge, verbose=verbose) if background_knowledge is not None: orient_by_background_knowledge(cg_1, background_knowledge) @@ -89,7 +89,7 @@ def pc_alg(data, alpha, indep_test, stable, uc_rule, uc_priority, background_kno return cg -def mvpc_alg(data, alpha, indep_test, correction_name, stable, uc_rule, uc_priority): +def mvpc_alg(data, alpha, indep_test, correction_name, stable, uc_rule, uc_priority, verbose): """ :param data: data set (numpy ndarray) :param alpha: desired significance level (float) in (0, 1) @@ -125,7 +125,7 @@ def mvpc_alg(data, alpha, indep_test, correction_name, stable, uc_rule, uc_prior ## Step 2: ## a) Run PC algorithm with the 1st step skeleton; - cg_pre = SkeletonDiscovery.skeleton_discovery(data, alpha, indep_test, stable) + cg_pre = SkeletonDiscovery.skeleton_discovery(data, alpha, indep_test, stable, verbose=verbose) cg_pre.to_nx_skeleton() # print('Finish skeleton search with test-wise deletion.') diff --git a/causallearn/utils/Fas.py b/causallearn/utils/Fas.py index 6f7d39a6..9e0ec1ac 100644 --- a/causallearn/utils/Fas.py +++ b/causallearn/utils/Fas.py @@ -4,6 +4,7 @@ from causallearn.graph.Edges import Edges from causallearn.utils.ChoiceGenerator import ChoiceGenerator from copy import deepcopy +from causallearn.search.ConstraintBased.FCI import citest_cache def possible_parents(node_x, adjx, knowledge=None): @@ -47,7 +48,12 @@ def searchAtDepth0(data, nodes, adjacencies, sep_sets, independence_test_method= print(nodes[i + 1].get_name()) for j in range(i+1, len(nodes)): - p_value = independence_test_method(data, i, j, tuple(empty)) + ijS_key = (i, j, frozenset()) + if ijS_key in citest_cache: + p_value = citest_cache[ijS_key] + else: + p_value = independence_test_method(data, i, j, tuple(empty)) + citest_cache[ijS_key] = p_value independent = p_value > alpha no_edge_required = True if knowledge is None else \ ((not knowledge.is_required(nodes[i], nodes[j])) or knowledge.is_required(nodes[j], nodes[i])) @@ -80,7 +86,15 @@ def edge(adjx, i, adjacencies_completed_edge): cond_set = [nodes.index(ppx[index]) for index in choice] choice = cg.next() - p_value = independence_test_method(data, i, nodes.index(adjx[j]), tuple(cond_set)) + Y = nodes.index(adjx[j]) + X, Y = (i, Y) if (i < Y) else (Y, i) + XYS_key = (X, Y, frozenset(cond_set)) + if XYS_key in citest_cache: + p_value = citest_cache[XYS_key] + else: + p_value = independence_test_method(data, X, Y, tuple(cond_set)) + citest_cache[XYS_key] = p_value + independent = p_value > alpha no_edge_required = True if knowledge is None else \ diff --git a/causallearn/utils/PCUtils/SkeletonDiscovery.py b/causallearn/utils/PCUtils/SkeletonDiscovery.py index d69ce225..984d1a8e 100644 --- a/causallearn/utils/PCUtils/SkeletonDiscovery.py +++ b/causallearn/utils/PCUtils/SkeletonDiscovery.py @@ -4,9 +4,10 @@ from causallearn.graph.GraphClass import CausalGraph from causallearn.utils.PCUtils.Helper import append_value +from causallearn.utils.cit import chisq, gsq -def skeleton_discovery(data, alpha, indep_test, stable=True, background_knowledge=None): +def skeleton_discovery(data, alpha, indep_test, stable=True, background_knowledge=None, verbose=False): ''' Perform skeleton discovery @@ -31,8 +32,21 @@ def skeleton_discovery(data, alpha, indep_test, stable=True, background_knowledg no_of_var = data.shape[1] cg = CausalGraph(no_of_var) - cg.data = data cg.set_ind_test(indep_test) + if indep_test == chisq or indep_test == gsq: + # if dealing with discrete data, data is numpy.ndarray with n rows m columns, + # for each column, translate the discrete values to int indexs starting from 0, + # e.g. [45, 45, 6, 7, 6, 7] -> [2, 2, 0, 1, 0, 1] + # ['apple', 'apple', 'pear', 'peach', 'pear'] -> [0, 0, 2, 1, 2] + # in old code, its presumed that discrete `data` is already indexed, + # but here we make sure it's in indexed form, so allow more user input e.g. 'apple' .. + def _unique(column): + return np.unique(column, return_inverse=True)[1] + cg.is_discrete = True + cg.data = np.apply_along_axis(_unique, 0, data).astype(np.int64) + cg.cardinalities = np.max(cg.data, axis=0) + 1 + else: + cg.data = data depth = -1 while cg.max_degree() - 1 > depth: @@ -48,7 +62,7 @@ def skeleton_discovery(data, alpha, indep_test, stable=True, background_knowledg if background_knowledge is not None and ( background_knowledge.is_forbidden(cg.G.nodes[x], cg.G.nodes[y]) and background_knowledge.is_forbidden(cg.G.nodes[y], cg.G.nodes[x])): - print('%d ind %d | %s with background background_knowledge\n' % (x, y, S)) + if verbose: print('%d ind %d | %s with background background_knowledge\n' % (x, y, S)) if not stable: edge1 = cg.G.get_edge(cg.G.nodes[x], cg.G.nodes[y]) if edge1 is not None: @@ -65,7 +79,7 @@ def skeleton_discovery(data, alpha, indep_test, stable=True, background_knowledg else: p = cg.ci_test(x, y, S) if p > alpha: - print('%d ind %d | %s with p-value %f\n' % (x, y, S, p)) + if verbose: print('%d ind %d | %s with p-value %f\n' % (x, y, S, p)) if not stable: edge1 = cg.G.get_edge(cg.G.nodes[x], cg.G.nodes[y]) if edge1 is not None: @@ -80,7 +94,7 @@ def skeleton_discovery(data, alpha, indep_test, stable=True, background_knowledg append_value(cg.sepset, y, x, S) break else: - print('%d dep %d | %s with p-value %f\n' % (x, y, S, p)) + if verbose: print('%d dep %d | %s with p-value %f\n' % (x, y, S, p)) for (x, y) in list(set(edge_removal)): edge1 = cg.G.get_edge(cg.G.nodes[x], cg.G.nodes[y]) diff --git a/causallearn/utils/cit.py b/causallearn/utils/cit.py index bcc66d0a..63f05763 100644 --- a/causallearn/utils/cit.py +++ b/causallearn/utils/cit.py @@ -176,15 +176,126 @@ def fisherz(data, X, Y, condition_set, correlation_matrix=None): return p -def chisq(data, X, Y, conditioning_set): - return chisq_or_gsq_test(data=data, X=X, Y=Y, conditioning_set=conditioning_set) +def chisq(data, X, Y, conditioning_set, cardinalities=None): + # though cardinalities can be computed from data, here we pass it as argument, + # to prevent from repeated computation on each variable's vardinality + if cardinalities is None: cardinalities = np.max(data, axis=0) + 1 + indexs = list(conditioning_set) + [X, Y] + return chisq_or_gsq_test(data[:, indexs].T, cardinalities[indexs]) + +def gsq(data, X, Y, conditioning_set, cardinalities=None): + indexs = list(conditioning_set) + [X, Y] + return chisq_or_gsq_test(data[:, indexs].T, cardinalities[indexs], G_sq=True) + +def chisq_or_gsq_test(dataSXY, cardSXY, G_sq=False): + '''by Haoyue@12/18/2021 + Parameters + ---------- + dataSXY: numpy.ndarray, in shape (|S|+2, n), where |S| is size of conditioning set (can be 0), n is sample size + dataSXY.dtype = np.int64, and each row has values [0, 1, 2, ..., card_of_this_row-1] + cardSXY: cardinalities of each row (each variable) + G_sq: True if use G-sq, otherwise (False by default), use Chi_sq + ''' + def _Fill2DCountTable(dataXY, cardXY): + ''' + e.g. dataXY: the observed dataset contains 5 samples, on variable x and y they're + x: 0 1 2 3 0 + y: 1 0 1 2 1 + cardXY: [4, 3] + fill in the counts by index, we have the joint count table in 4 * 3: + xy| 0 1 2 + --|------- + 0 | 0 2 0 + 1 | 1 0 0 + 2 | 0 1 0 + 3 | 0 0 1 + note: if sample size is large enough, in theory: + min(dataXY[i]) == 0 && max(dataXY[i]) == cardXY[i] - 1 + however some values may be missed. + also in joint count, not every value in [0, cardX * cardY - 1] occurs. + that's why we pass cardinalities in, and use `minlength=...` in bincount + ''' + cardX, cardY = cardXY + xyIndexed = dataXY[0] * cardY + dataXY[1] + xyJointCounts = np.bincount(xyIndexed, minlength=cardX*cardY).reshape(cardXY) + xMarginalCounts = np.sum(xyJointCounts, axis=1) + yMarginalCounts = np.sum(xyJointCounts, axis=0) + return xyJointCounts, xMarginalCounts, yMarginalCounts + + def _Fill3DCountTable(dataSXY, cardSXY): + cardX, cardY = cardSXY[-2:] + cardS = np.prod(cardSXY[:-2]) + + cardCumProd = np.ones_like(cardSXY) + cardCumProd[:-1] = np.cumprod(cardSXY[1:][::-1])[::-1] + SxyIndexed = np.dot(cardCumProd[None], dataSXY)[0] + + SxyJointCounts = np.bincount(SxyIndexed, minlength=cardS*cardX*cardY).reshape((cardS, cardX, cardY)) + + SMarginalCounts = np.sum(SxyJointCounts, axis=(1, 2)) + SMarginalCountsNonZero = SMarginalCounts != 0 + SMarginalCounts = SMarginalCounts[SMarginalCountsNonZero] + SxyJointCounts = SxyJointCounts[SMarginalCountsNonZero] + + SxJointCounts = np.sum(SxyJointCounts, axis=2) + SyJointCounts = np.sum(SxyJointCounts, axis=1) + return SxyJointCounts, SMarginalCounts, SxJointCounts, SyJointCounts + + def _CalculatePValue(cTables, eTables): + ''' + calculate the rareness (pValue) of an observation from a given distribution with certain sample size. + + Let k, m, n be respectively the cardinality of S, x, y. if S=empty, k==1. + Parameters + ---------- + cTables: tensor, (k, m, n) the [c]ounted tables (reflect joint P_XY) + eTables: tensor, (k, m, n) the [e]xpected tables (reflect product of marginal P_X*P_Y) + if there are zero entires in eTables, zero must occur in whole rows or columns. + e.g. w.l.o.g., row eTables[w, i, :] == 0, iff np.sum(cTables[w], axis=1)[i] == 0, i.e. cTables[w, i, :] == 0, + i.e. in configuration of conditioning set == w, no X can be in value i. + + Returns: pValue (float in range (0, 1)), the larger pValue is (>alpha), the more independent. + ------- + ''' + eTables_zero_inds = eTables == 0 + eTables_zero_to_one = np.copy(eTables) + eTables_zero_to_one[eTables_zero_inds] = 1 # for legal division + + if G_sq == False: + sum_of_chi_square = np.sum(((cTables - eTables) ** 2) / eTables_zero_to_one) + else: + div = np.divide(cTables, eTables_zero_to_one) + div[div == 0] = 1 # It guarantees that taking natural log in the next step won't cause any error + sum_of_chi_square = 2 * np.sum(cTables * np.log(div)) + + # array in shape (k,), zero_counts_rows[w]=c (0<=c no (1,3). ###### + ########### otherwise #degree_of_freedom will add a spurious 1: (0-1)*(0-1) ####### + if len(sub_data) == 0: continue ################################################# + ################################################################################### + # Step 2: Generate contingency table (applying Fienberg's method) def make_ctable(D, cat_size): x = np.array(D[:, 0], dtype=np.dtype(int)) @@ -242,6 +361,7 @@ def make_ctable(D, cat_size): ctable = bin_count.reshape(cat_size, cat_size) ctable = ctable[~np.all(ctable == 0, axis=1)] # Remove rows consisted entirely of zeros ctable = ctable[:, ~np.all(ctable == 0, axis=0)] # Remove columns consisted entirely of zeros + return ctable ctable = make_ctable(sub_data, max_categories) @@ -276,6 +396,7 @@ def cartesian_product(lists): return result + def get_index_mv_rows(mvdata): nrow, ncol = np.shape(mvdata) bindxRows = np.ones((nrow,), dtype=bool) diff --git a/tests/TestData/bnlearn_discrete_10000/alarm.txt b/tests/TestData/bnlearn_discrete_10000/alarm.txt new file mode 100644 index 00000000..25cd8c63 --- /dev/null +++ b/tests/TestData/bnlearn_discrete_10000/alarm.txt @@ -0,0 +1,10001 @@ +X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 X16 X17 X18 X19 X20 X21 X22 X23 X24 X25 X26 X27 X28 X29 X30 X31 X32 X33 X34 X35 X36 X37 +1 3 1 2 1 1 3 1 1 1 1 1 1 1 1 2 1 4 2 2 2 3 1 1 2 1 1 3 3 2 4 4 1 1 1 1 1 +1 3 1 2 1 1 2 1 1 1 1 1 1 1 2 2 2 4 2 2 2 2 1 2 2 3 1 3 3 2 4 4 1 1 1 3 2 +1 1 1 1 1 1 3 1 2 2 1 2 1 1 1 2 1 1 2 1 1 3 1 2 2 1 2 3 3 4 2 1 2 2 3 3 1 +1 1 1 2 1 1 3 1 2 2 1 2 1 1 1 2 1 4 2 2 2 3 1 2 2 1 1 3 3 2 4 4 1 1 3 3 1 +1 2 3 1 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1 1 2 2 1 1 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 1 1 1 1 1 2 2 2 2 2 1 2 2 1 1 2 1 2 2 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 2 2 2 2 2 1 2 2 2 2 1 1 2 2 1 2 2 2 2 1 2 2 2 1 1 2 1 2 2 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 1 1 1 1 1 2 2 2 2 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 1 1 2 2 1 2 2 2 2 1 2 2 2 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 1 1 2 2 1 2 2 2 2 2 1 2 2 1 1 2 1 2 2 1 1 1 2 1 2 1 1 1 2 2 2 2 1 2 1 1 2 2 2 2 1 1 2 1 2 1 1 1 2 2 1 1 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 1 1 2 2 1 2 2 2 2 1 2 2 2 1 1 2 1 2 2 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 2 2 2 2 2 1 2 2 2 2 1 1 2 2 1 2 2 2 2 1 2 2 2 1 1 2 1 2 2 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 1 1 2 2 1 2 2 2 1 1 2 2 2 1 1 2 1 2 2 1 1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 2 2 1 1 1 2 2 1 1 1 1 1 2 1 1 1 1 1 1 2 2 2 1 2 1 2 2 1 1 2 1 1 1 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 2 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 2 1 2 1 1 2 2 2 2 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 2 1 2 2 2 1 2 1 1 1 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 1 2 1 1 2 2 2 2 1 2 2 2 2 1 1 2 2 1 2 2 2 2 1 2 2 2 1 1 2 1 2 2 1 1 1 1 1 2 2 1 1 2 2 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 1 2 2 2 1 2 1 2 1 1 1 2 2 2 2 2 1 2 1 2 1 1 1 1 2 1 1 1 1 1 1 1 1 2 2 1 1 2 2 2 2 2 2 2 2 2 2 1 2 2 1 2 1 2 1 2 2 1 2 2 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 2 2 2 2 1 2 2 2 2 1 1 1 1 1 2 2 2 2 1 1 2 2 1 1 2 1 2 2 1 1 1 1 1 2 2 1 1 2 1 2 2 1 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 1 2 1 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 1 1 2 2 2 1 2 1 2 1 1 1 2 2 1 2 2 2 2 1 2 2 1 1 2 2 1 1 1 1 1 1 1 1 2 2 1 1 2 1 2 2 2 2 2 2 2 2 1 1 2 1 2 1 2 1 2 2 2 2 2 2 2 1 1 2 2 1 1 +1 1 1 1 2 2 1 2 2 2 2 2 1 2 2 2 2 1 1 1 1 1 2 2 2 2 1 1 2 1 1 1 2 1 1 1 1 1 1 1 1 2 2 1 1 2 2 2 2 2 2 2 2 2 2 2 2 1 1 2 1 2 1 1 2 2 1 1 2 2 1 1 2 2 1 1 diff --git a/tests/TestFCI.py b/tests/TestFCI.py index dd4f1c6c..b1e915bc 100644 --- a/tests/TestFCI.py +++ b/tests/TestFCI.py @@ -1,4 +1,6 @@ import sys +import time +import os sys.path.append("") import pandas as pd @@ -6,7 +8,7 @@ import numpy as np from causallearn.utils.PCUtils.BackgroundKnowledge import BackgroundKnowledge from causallearn.search.ConstraintBased.FCI import fci -from causallearn.utils.cit import fisherz, kci +from causallearn.utils.cit import fisherz, kci, chisq from causallearn.utils.GraphUtils import GraphUtils @@ -75,3 +77,28 @@ def test_fritl(self): pgv_g = GraphUtils.to_pgv(G) pgv_g.draw('fritl.png', prog='dot', format='png') print(G) + + def test_bnlearn_discrete_datasets(self): + benchmark_names = [ + "asia", "cancer", "earthquake", "sachs", "survey", + "alarm", "barley", "child", "insurance", "water", + "hailfinder", "hepar2", "win95pts", + "andes" + ] + + bnlearn_path = './TestData/bnlearn_discrete_10000' + for bname in benchmark_names: + data = np.loadtxt(os.path.join(bnlearn_path, f'{bname}.txt'), skiprows=1) + start = time.time() + G = fci(data, chisq, 0.05, verbose=False) + end = time.time() + print(f'{bname}, used {end - start:.5f}s\n\n\n') + + def test_large_continuous_dataset(self): + data = np.loadtxt('./data_linear_10.txt', skiprows=1) + start = time.time() + G = fci(data, fisherz, 0.05, verbose=False) + end = time.time() + print(f'./data_linear_10, used {end - start:.5f}s\n\n\n') + + diff --git a/tests/TestPC.py b/tests/TestPC.py index d386a263..b2c2b159 100644 --- a/tests/TestPC.py +++ b/tests/TestPC.py @@ -200,4 +200,48 @@ def test_pc_with_kci(self): # cg.to_nx_graph() # cg.draw_nx_graph(skel=False) - print('finish') \ No newline at end of file + print('finish') + + # example13 + def test_new_old_gsq_chisq_equivalent(self): + from causallearn.utils.cit import gsq_notoptimized, chisq_notoptimized + from itertools import chain, combinations + def powerset(iterable): + return chain.from_iterable(combinations(list(iterable), r) for r in range(len(iterable) + 1)) + def _unique(column): + return np.unique(column, return_inverse=True)[1] + + data_path = "data_discrete_10.txt" + data = np.loadtxt(data_path, skiprows=1) + data = np.apply_along_axis(_unique, 0, data).astype(np.int32) + cardinalities = np.max(data, axis=0) + 1 + + for X in range(data.shape[1]): + for Y in range(X + 1, data.shape[1]): + for S in powerset([_ for _ in range(data.shape[1]) if _ != X and _ != Y]): + assert np.isclose(gsq(data, X, Y, S, cardinalities), gsq_notoptimized(data, X, Y, S)) + assert np.isclose(chisq(data, X, Y, S, cardinalities), chisq_notoptimized(data, X, Y, S)) + print(f'{X};{Y}|{S} passed') + + # example14 + def test_bnlearn_discrete_datasets(self): + import os + benchmark_names = [ + "asia", "cancer", "earthquake", "sachs", "survey", + "alarm", "barley", "child", "insurance", "water", + "hailfinder", "hepar2", "win95pts", + "andes", + ] + + bnlearn_path = './TestData/bnlearn_discrete_10000' + for bname in benchmark_names: + data = np.loadtxt(os.path.join(bnlearn_path, f'{bname}.txt'), skiprows=1) + cg = pc(data, 0.05, chisq, True, 0, -1) # Run PC and obtain the estimated graph (CausalGraph object) + print(f'{bname}: used {cg.PC_elapsed:.5f}s') + # visualization using pydot + cg.draw_pydot_graph() + + # visualization using networkx + # cg.to_nx_graph() + # cg.draw_nx_graph(skel=False) +