def encode_features(X_train, X_val, encode_type):
assert(encode_type in ["NN-embedding", "one-hot", "label-encode"])
if encode_type == "NN-embedding":
print("******* use NN embedding features ...")
embeddings_path = os.path.join(data_dir, em_name)
features_em, embeddings_dict, em_size = load_embeddings(embeddings_path)
X_train = embed_features(X_train, embeddings_dict, features, features_em) # X shape (num_records, 42)
X_val = embed_features(X_val, embeddings_dict, features, features_em) # X shape (num_records, 42)
print("training X: ", X_train.shape)
print("validation X: ", X_val.shape)
elif encode_type == "one-hot":
print("******* use one-hot encoded features ...")
enc = OneHotEncoder(sparse=False)
enc.fit(X_train)
X_train = enc.transform(X_train) # X shape (num_records, 1182)
X_val = enc.transform(X_val) # X shape (num_records, 1182)
print("training X: ", X_train.shape)
print("validation X: ", X_val.shape)
elif encode_type == "label-encode":
# do nothing, features are already label-encoded
print("******* use label encoded features ...")
print("training X: ", X_train.shape)
print("validation X: ", X_val.shape)
return X_train, X_val
def correlate(**kwargs):
# Get pairwise dissimilarities of learnt representations
embeddings = load_embeddings(**kwargs)
learnt_dissimilarity_matrix = embeddings_to_dissimilarity(embeddings)
learnt_dissimilarities = squareform(learnt_dissimilarity_matrix)
# Get pairwise dissimilarities of ground truth representations
level, lg = kwargs["level"], kwargs["lg"]
assert level == "phoneme", "This function is only for phoneme-level models"
phonemes_in_corpus = list(learnt_dissimilarity_matrix.index)
features = load_features(lg).loc[phonemes_in_corpus]
row_indices, column_indices = np.triu_indices(
len(learnt_dissimilarity_matrix), k=1)
rows = [learnt_dissimilarity_matrix.index[i] for i in row_indices]
columns = [learnt_dissimilarity_matrix.columns[j] for j in column_indices]
indices = list(zip(rows, columns))
ground_truth_dissimilarities = np.array(
[distance_fn(*index) for index in indices])
r, p = spearmanr(learnt_dissimilarities, ground_truth_dissimilarities)
# Write results to disk
if "hidden" in kwargs:
hyperparams = f"{kwargs['size']}-{kwargs['hidden']}"
else:
hyperparams = f"{kwargs['size']}-{kwargs['window']}"
name = kwargs["name"]
path = f"results/{level}/correlation/{lg}/{name}/{hyperparams}"
ensure_dir(path)
epoch = kwargs["epoch"]
filename = os.path.join(path, f"{epoch}.txt")
with open(filename, "w") as file:
file.write(str((r, p)))
return r, p
def original(**kwargs):
embeddings = load_embeddings(**kwargs)
lg = kwargs["lg"]
features = load_features(lg)
common_phonemes = embeddings.index.intersection(features.index)
S = features.loc[common_phonemes]
X = embeddings.loc[common_phonemes]
assert X.shape[0] == S.shape[0], (X.shape, S.shape,
"Unequal number of rows")
assert X.shape[0] > 1, (X.shape, "Must have more than 1 row")
X = norm_center_matrix(X)
S = norm_center_matrix(S)
X_q, _, _ = decomp_qr.qr(X,
overwrite_a=True,
mode="economic",
pivoting=True)
S_q, _, _ = decomp_qr.qr(S,
overwrite_a=True,
mode="economic",
pivoting=True)
C = np.dot(X_q.T, S_q)
r = linalg.svd(C, full_matrices=False, compute_uv=False)
d = min(X.shape[1], S.shape[1])
r = r[:d]
r = np.minimum(np.maximum(r, 0.0), 1.0) # remove roundoff errs
r = r.mean()
# Write results to disk
level, lg, name = kwargs["level"], kwargs["lg"], kwargs["name"]
if "hidden" in kwargs:
hyperparams = f"{kwargs['size']}-{kwargs['hidden']}"
else:
hyperparams = f"{kwargs['size']}-{kwargs['window']}"
path = f"results/{level}/qvec/{lg}/{name}/{hyperparams}"
ensure_dir(path)
epoch = kwargs["epoch"]
filename = os.path.join(path, f"{epoch}.txt")
with open(filename, "w") as file:
file.write(str(r))
return r
def correlate(**kwargs):
embeddings = load_embeddings(**kwargs).T
lg = kwargs["lg"]
features = load_features(lg).T
common_phonemes = embeddings.columns.intersection(features.columns)
S = features[common_phonemes]
X = embeddings[common_phonemes]
correlations = pd.DataFrame(
{i: X.corrwith(S.iloc[i], axis=1)
for i in range(len(S))})
correlations.columns = S.index
# Write results to disk
level, name = kwargs["level"], kwargs["name"]
if "hidden" in kwargs:
hyperparams = f"{kwargs['size']}-{kwargs['hidden']}"
else:
hyperparams = f"{kwargs['size']}-{kwargs['window']}"
path = f"results/{level}/qvec/{lg}/{name}/{hyperparams}"
ensure_dir(path)
epoch = kwargs["epoch"]
filename = os.path.join(path, f"{epoch}.csv")
correlations.to_csv(filename, index=False)
return correlations
def get_raw_dissimilarities(**kwargs):
# Get pairwise dissimilarities of learnt representations
embeddings = load_embeddings(**kwargs)
learnt_dissimilarity_matrix = embeddings_to_dissimilarity(embeddings)
learnt_dissimilarities = squareform(learnt_dissimilarity_matrix)
# Get pairwise dissimilarities of ground truth representations
level, lg = kwargs["level"], kwargs["lg"]
assert level == "phoneme", "This function is only for phoneme-level models"
phonemes_in_corpus = list(learnt_dissimilarity_matrix.index)
features = load_features(lg).loc[phonemes_in_corpus]
row_indices, column_indices = np.triu_indices(
len(learnt_dissimilarity_matrix), k=1)
rows = [learnt_dissimilarity_matrix.index[i] for i in row_indices]
columns = [learnt_dissimilarity_matrix.columns[j] for j in column_indices]
indices = list(zip(rows, columns))
ground_truth_dissimilarities = np.array(
[distance_fn(*index) for index in indices])
return pd.DataFrame(
{
"learnt": learnt_dissimilarities,
"true": ground_truth_dissimilarities
},
index=indices,
)
def qvec_cca(**kwargs):
embeddings = load_embeddings(**kwargs).T
lg = kwargs["lg"]
features = load_features(lg).T
common_phonemes = embeddings.columns.intersection(features.columns)
S = features[common_phonemes]
X = embeddings[common_phonemes]
cca = CCA(n_components=1)
a, b = cca.fit_transform(X.T, S.T)
a, b = a.reshape(-1), b.reshape(-1)
r, p = pearsonr(a, b)
# Write results to disk
level, lg, name = kwargs["level"], kwargs["lg"], kwargs["name"]
if "hidden" in kwargs:
hyperparams = f"{kwargs['size']}-{kwargs['hidden']}"
else:
hyperparams = f"{kwargs['size']}-{kwargs['window']}"
path = f"results/{level}/qvec/{lg}/{name}/{hyperparams}"
ensure_dir(path)
epoch = kwargs["epoch"]
filename = os.path.join(path, f"{epoch}.txt")
with open(filename, "w") as file:
file.write(str((r, p)))
return r, p
plt.rcParams.update({'font.size': 16})
import numpy as np
import pandas as pd
import os
# directory of the pickle files
data_dir = 'data/'
# directory for saving the images
image_dir = 'results/'
# load embeddings
em_name = 'embeddings_auto.pickle' # auto calculated (half of the original dim, at most 50)
#em_name = 'embeddings_ref.pickle' # paper ver
embeddings_path = os.path.join(data_dir, em_name)
features_em, embeddings_dict, em_size = load_embeddings(embeddings_path)
# load LabelEncoders
with open(os.path.join(data_dir, "les.pickle"), 'rb') as f:
les_dict = pickle.load(f) # usage: les_dict['DayOfWeek']
print("label encoded features: ", les_dict.keys())
def plot_2D(xx, yy, names, figsize=(8, 8)):
# plot 2D results
fig, ax = plt.subplots(figsize=figsize)
ax.plot(xx, yy, 'o', markeredgecolor='k', alpha=0.6, markersize=10)
for i, txt in enumerate(names):
ax.annotate(txt, (xx[i], yy[i]),
xytext=(8.5, -5),
textcoords='offset points')
"""
# plot performance results
#model_res.index = ["embed", "one-hot", "label"]
axes = model_res.plot.bar(subplots=True, figsize=(10, 4), layout=(1, 3), legend=None, rot=30)
#axes[0, 0].set_ylim(0, 1200)
#axes[0, 1].set_ylim(0, 10)
#axes[0, 2].set_ylim(0, 0.31)
plt.tight_layout()
fig_path = os.path.join(res_dir, "res_"+model_name+".pdf")
print("Save performance figure to: {}".format(fig_path))
plt.savefig(fig_path, bbox_inches='tight')
# save embedding size
embeddings_path = os.path.join(data_dir, em_name)
_, _, em_size = load_embeddings(embeddings_path)
res_path = os.path.join(res_dir, "em_size.csv")
print("Save embedding size to: {}".format(res_path))
em_size.to_csv(res_path)
"""
# load testing data: features X, target y
df_test = pd.read_csv(os.path.join(data_dir, 'feature_test_data.csv'))
features = ['Open', 'Store', 'DayOfWeek', 'Promo', 'Year', 'Month', 'Day', 'State']
X = df_train[features]
X = np.asarray(X)
if embeddings_as_input:
print("Using learned embeddings as input")
X = embed_features(X, embeddings_path) # X shape (num_records, 42)