def objective(p):
# Round input parameters
r = round(p[0] * 100.0) / 100.0
t = round(p[1] * 100.0) / 100.0
# Check if cache already has these values
cost = float('inf')
if (r, t) in cost_cache:
cost = cost_cache[(r, t)]
else:
_, _, knees = compute_knee_points(r, t)
#knees = mapping(knees, points_reduced, removed)
#avg_x, _, _, _, p = performance(points, knees)
#cost = avg_x / p
# Check the performance on the reduced space
points_reduced, _ = points_cache[r]
# penalize solutions with a single knee
if len(knees) == 1:
cost = float('inf')
else:
if args.a is Accuracy.knee:
_, _, _, _, cost = accuracy_knee(points_reduced, knees)
else:
_, _, _, _, cost = accuracy_trace(points_reduced, knees)
cost_cache[(r, t)] = cost
return cost
def objective(p):
# Round input parameters
dx = round(p[0] * 100.0) / 100.0
dy = round(p[1] * 100.0) / 100.0
dz = round(p[2] * 100.0) / 100.0
# Check if cache already has these values
cost = float('inf')
if (dx, dy, dz) in cost_cache:
cost = cost_cache[(dx, dy, dz)]
else:
knees = compute_knee_points(dx, dy, dz)
# penalize solutions with a single knee
if len(knees) == 1:
cost = float('inf')
else:
if args.a is Accuracy.knee:
_, _, _, _, cost = accuracy_knee(points, knees)
else:
_, _, _, _, cost = accuracy_trace(points, knees)
cost_cache[(dx, dy, dz)] = cost
return cost
def main(args):
# get the expected file from the input file
dirname = os.path.dirname(args.i)
filename = os.path.splitext(os.path.basename(args.i))[0]
expected_file = os.path.join(os.path.normpath(dirname),
f'{filename}_expected.csv')
expected = None
if os.path.exists(expected_file):
with open(expected_file, 'r') as f:
reader = csv.reader(f, quoting=csv.QUOTE_NONNUMERIC)
expected = list(reader)
else:
expected = []
points = np.genfromtxt(args.i, delimiter=',')
points_reduced, points_removed = rdp.rdp(points, args.r)
space_saving = round((1.0 - (len(points_reduced) / len(points))) * 100.0,
2)
logger.info('Number of data points after RDP: %s(%s %%)',
len(points_reduced), space_saving)
names = [
'kneedle', 'kneedke(Rec)', 'l-method', 'dfdt', 'menger', 'curvature',
'Tyler (RDP)', 'Tyler', 'RDP'
]
methods = [
kneedle.auto_knees, kneedle.multi_knee, lmethod.multi_knee,
dfdt.multi_knee, menger.multi_knee, curvature.multi_knee, ps.knees
]
knees = []
knees_raw = []
# Elbow methods
for m, n in zip(methods, names):
tmp = m(points_reduced)
knees.append(tmp)
raw_indexes = rdp.mapping(tmp, points_reduced, points_removed)
knees_raw.append(raw_indexes)
# Tyler
candidates = ps.knees(points)
knees.append(candidates)
knees_raw.append(candidates)
# RDP
candidates = np.arange(1, len(points_reduced))
knees.append(candidates)
raw_indexes = rdp.mapping(candidates, points_reduced, points_removed)
knees_raw.append(raw_indexes)
#plot_knees(points, knees_raw, names)
cmethod = {
Clustering.single: clustering.single_linkage,
Clustering.complete: clustering.complete_linkage,
Clustering.average: clustering.average_linkage
}
# Cluster and select points
filtered_knees_raw = []
rankings = []
for k, n in zip(knees, names):
# remove 0 index in the knees:
k = k[k != 0]
if n == 'Tyler':
filtered_knees_raw.append(k)
ranks = np.full(len(k), 1.0)
#rankings.append(ranking.slope_ranking(points, k))
rankings.append(ranks)
else:
t_k = pp.filter_worst_knees(points_reduced, k)
filtered_knees = pp.filter_clustring(points_reduced, t_k,
cmethod[args.c], args.t,
args.m)
rankings.append(
ranking.slope_ranking(points_reduced, filtered_knees))
raw_indexes = rdp.mapping(filtered_knees, points_reduced,
points_removed)
filtered_knees_raw.append(raw_indexes)
logger.info(f'Model MSE(knees) MSE(exp) Cost(tr) Cost(kn)')
logger.info(f'----------------------------------------------------------')
for k, n in zip(filtered_knees_raw, names):
if len(expected) > 0:
error_mse = evaluation.mse(points, k, expected,
evaluation.Strategy.knees)
error_mse_exp = evaluation.mse(points, k, expected,
evaluation.Strategy.expected)
else:
error_mse = math.nan
error_mse_exp = math.nan
_, _, _, _, cost_trace = evaluation.accuracy_trace(points, k)
_, _, _, _, cost_knee = evaluation.accuracy_knee(points, k)
logger.info(
f'{n:<13}| {error_mse:10.2E} {error_mse_exp:10.2E} {cost_trace:10.2E} {cost_knee:10.2E}'
)
plot_knees_ranking(points, filtered_knees_raw, names, rankings, expected)
def main(args):
# get the expected file from the input file
dirname = os.path.dirname(args.i)
filename = os.path.splitext(os.path.basename(args.i))[0]
expected_file = os.path.join(os.path.normpath(dirname),
f'{filename}_expected.csv')
expected = None
if os.path.exists(expected_file):
with open(expected_file, 'r') as f:
reader = csv.reader(f, quoting=csv.QUOTE_NONNUMERIC)
expected = list(reader)
else:
expected = []
expected = np.array(expected)
points = np.genfromtxt(args.i, delimiter=',')
rs = [0.75, 0.80, 0.85, 0.90, 0.95]
ts = [0.01, 0.02, 0.03, 0.04, 0.05]
evaluations = []
for r in rs:
## Knee detection code ##
points_reduced, points_removed = rdp.rdp(points, r)
knees = np.arange(1, len(points_reduced))
t_k = pp.filter_worst_knees(points_reduced, knees)
t_k = pp.filter_corner_knees(points_reduced, t_k)
for t in ts:
## Clustering ##
filtered_knees = pp.filter_clustring(points_reduced, t_k,
clustering.average_linkage, t,
ClusterRanking.left)
final_knees = pp.add_points_even(points, points_reduced,
filtered_knees, points_removed)
## Evaluation ##
error_rmspe = evaluation.rmspe(points, final_knees, expected,
evaluation.Strategy.knees)
error_rmspe_exp = evaluation.rmspe(points, final_knees, expected,
evaluation.Strategy.expected)
_, _, _, _, cost_trace = evaluation.accuracy_trace(
points, final_knees)
_, _, _, _, cost_knee = evaluation.accuracy_knee(
points, final_knees)
evaluations.append(
[error_rmspe, error_rmspe_exp, cost_trace, cost_knee])
## Compute the Correlation ##
evaluations = np.array(evaluations)
rho = np.corrcoef(evaluations.T)
rmspe_rmspe_exp = rho[0, 1]
rmspe_cost_trace = rho[0, 2]
rmspe_cost_knee = rho[0, 3]
rmspe_exp_cost_trace = rho[1, 2]
rmspe_exp_cost_knee = rho[1, 3]
cost_trace_cost_knee = rho[2, 3]
#logger.info(f'{rho}')
logger.info(
f'{rmspe_rmspe_exp}, {rmspe_cost_trace}, {rmspe_cost_knee}, {rmspe_exp_cost_trace}, {rmspe_exp_cost_knee}, {cost_trace_cost_knee}'
)