def test_tracker_ud():
"""Test TrackerUD"""
import matplotlib.pyplot as plt
tr = TrackerUD(callback, 3, 1, 1, 1, np.inf, 10, 1)
with ExperimentController('test', **std_kwargs) as ec:
tr = TrackerUD(ec, 3, 1, 1, 1, np.inf, 10, 1)
tr = TrackerUD(None, 3, 1, 1, 1, 10, np.inf, 1)
rand = np.random.RandomState(0)
while not tr.stopped:
tr.respond(rand.rand() < tr.x_current)
assert_equal(tr.n_reversals, tr.stop_reversals)
tr = TrackerUD(None, 3, 1, 1, 1, np.inf, 10, 1)
tr.threshold()
rand = np.random.RandomState(0)
while not tr.stopped:
tr.respond(rand.rand() < tr.x_current)
# test responding after stopped
assert_raises(RuntimeError, tr.respond, 0)
# all the properties better work
tr.up
tr.down
tr.step_size_up
tr.step_size_down
tr.stop_reversals
tr.stop_trials
tr.start_value
tr.x_min
tr.x_max
tr.stopped
tr.x
tr.responses
tr.n_trials
tr.n_reversals
tr.reversals
tr.reversal_inds
fig, ax, lines = tr.plot()
tr.plot_thresh(ax=ax)
tr.plot_thresh()
plt.close(fig)
ax = plt.axes()
fig, ax, lines = tr.plot(ax)
plt.close(fig)
tr.threshold()
tr.check_valid(2)
# bad callback type
assert_raises(TypeError, TrackerUD, 'foo', 3, 1, 1, 1, 10, np.inf, 1)
# test dynamic step size and error conditions
tr = TrackerUD(None, 3, 1, [1, 0.5], [1, 0.5], 10, np.inf, 1,
change_indices=[2])
tr.respond(True)
with warnings.catch_warnings(record=True) as w:
tr = TrackerUD(None, 1, 1, 0.75, 0.75, np.inf, 9, 1,
x_min=0, x_max=2)
responses = [True, True, True, False, False, False, False, True, False]
for r in responses: # run long enough to encounter change_indices
tr.respond(r)
assert_equal(len(w), 1)
assert(tr.check_valid(1)) # make sure checking validity is good
assert(not tr.check_valid(3))
assert_raises(ValueError, tr.threshold, 1)
tr.threshold(3)
assert_equal(tr.n_trials, tr.stop_trials)
# run tests with ignore too--should generate warnings, but no error
with warnings.catch_warnings(record=True) as w:
tr = TrackerUD(None, 1, 1, 0.75, 0.25, np.inf, 8, 1,
x_min=0, x_max=2, repeat_limit='ignore')
responses = [False, True, False, False, True, True, False, True]
for r in responses: # run long enough to encounter change_indices
tr.respond(r)
assert_equal(len(w), 1)
tr.threshold(0)
# bad stop_trials
assert_raises(ValueError, TrackerUD, None, 3, 1, 1, 1, 10, 'foo', 1)
# bad stop_reversals
assert_raises(ValueError, TrackerUD, None, 3, 1, 1, 1, 'foo', 10, 1)
# change_indices too long
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, 1, change_indices=[1, 2])
# step_size_up length mismatch
assert_raises(ValueError, TrackerUD, None, 3, 1, [1], [1, 0.5], 10,
np.inf, 1, change_indices=[2])
# step_size_down length mismatch
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1], 10,
np.inf, 1, change_indices=[2])
# bad change_rule
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, 1, change_indices=[2], change_rule='foo')
# no change_indices (i.e. change_indices=None)
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, 1)
# start_value scalar type checking
assert_raises(TypeError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, [9, 5], change_indices=[2])
assert_raises(TypeError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, None, change_indices=[2])
# test with multiple change_indices
tr = TrackerUD(None, 3, 1, [3, 2, 1], [3, 2, 1], 10, np.inf, 1,
change_indices=[2, 4], change_rule='reversals')
def test_tracker_ud(hide_window):
"""Test TrackerUD"""
import matplotlib.pyplot as plt
tr = TrackerUD(callback, 3, 1, 1, 1, np.inf, 10, 1)
with ExperimentController('test', **std_kwargs) as ec:
tr = TrackerUD(ec, 3, 1, 1, 1, np.inf, 10, 1)
tr = TrackerUD(None, 3, 1, 1, 1, 10, np.inf, 1)
rand = np.random.RandomState(0)
while not tr.stopped:
tr.respond(rand.rand() < tr.x_current)
assert_equal(tr.n_reversals, tr.stop_reversals)
tr = TrackerUD(None, 3, 1, 1, 1, np.inf, 10, 1)
tr.threshold()
rand = np.random.RandomState(0)
while not tr.stopped:
tr.respond(rand.rand() < tr.x_current)
# test responding after stopped
with pytest.raises(RuntimeError, match="Tracker is stopped."):
tr.respond(0)
# all the properties better work
tr.up
tr.down
tr.step_size_up
tr.step_size_down
tr.stop_reversals
tr.stop_trials
tr.start_value
tr.x_min
tr.x_max
tr.stopped
tr.x
tr.responses
tr.n_trials
tr.n_reversals
tr.reversals
tr.reversal_inds
fig, ax, lines = tr.plot()
tr.plot_thresh(ax=ax)
tr.plot_thresh()
plt.close(fig)
ax = plt.axes()
fig, ax, lines = tr.plot(ax)
plt.close(fig)
tr.threshold()
tr.check_valid(2)
# bad callback type
with pytest.raises(TypeError,
match="callback must be a callable, None, or an"):
TrackerUD('foo', 3, 1, 1, 1, 10, np.inf, 1)
# test dynamic step size and error conditions
tr = TrackerUD(None,
3,
1, [1, 0.5], [1, 0.5],
10,
np.inf,
1,
change_indices=[2])
tr.respond(True)
tr = TrackerUD(None, 1, 1, 0.75, 0.75, np.inf, 9, 1, x_min=0, x_max=2)
responses = [True, True, True, False, False, False, False, True, False]
with pytest.warns(UserWarning, match='exceeded x_min'):
for r in responses: # run long enough to encounter change_indices
tr.respond(r)
assert (tr.check_valid(1)) # make sure checking validity is good
assert (not tr.check_valid(3))
with pytest.raises(ValueError,
match="with reversals attempting to exceed x_min"):
tr.threshold(1)
tr.threshold(3)
assert_equal(tr.n_trials, tr.stop_trials)
# run tests with ignore too--should generate warnings, but no error
tr = TrackerUD(None,
1,
1,
0.75,
0.25,
np.inf,
8,
1,
x_min=0,
x_max=2,
repeat_limit='ignore')
responses = [False, True, False, False, True, True, False, True]
with pytest.warns(UserWarning, match='exceeded x_min'):
for r in responses: # run long enough to encounter change_indices
tr.respond(r)
tr.threshold(0)
# bad stop_trials
with pytest.raises(ValueError,
match="stop_trials must be an integer or np.inf"):
TrackerUD(None, 3, 1, 1, 1, 10, 'foo', 1)
# bad stop_reversals
with pytest.raises(ValueError,
match="stop_reversals must be an integer or np.inf"):
TrackerUD(None, 3, 1, 1, 1, 'foo', 10, 1)
# change_indices too long
with pytest.raises(ValueError,
match="one element longer than change_indices"):
TrackerUD(None,
3,
1, [1, 0.5], [1, 0.5],
10,
np.inf,
1,
change_indices=[1, 2])
# step_size_up length mismatch
with pytest.raises(ValueError,
match="step_size_up is not scalar it must be one"):
TrackerUD(None, 3, 1, [1], [1, 0.5], 10, np.inf, 1, change_indices=[2])
# step_size_down length mismatch
with pytest.raises(ValueError,
match="If step_size_down is not scalar it must be one"):
TrackerUD(None, 3, 1, [1, 0.5], [1], 10, np.inf, 1, change_indices=[2])
# bad change_rule
with pytest.raises(ValueError,
match="must be either 'trials' or 'reversals"):
TrackerUD(None,
3,
1, [1, 0.5], [1, 0.5],
10,
np.inf,
1,
change_indices=[2],
change_rule='foo')
# no change_indices (i.e. change_indices=None)
with pytest.raises(ValueError,
match="If step_size_up is longer than 1, you must"):
TrackerUD(None, 3, 1, [1, 0.5], [1, 0.5], 10, np.inf, 1)
# start_value scalar type checking
with pytest.raises(TypeError, match="start_value must be a scalar"):
TrackerUD(None,
3,
1, [1, 0.5], [1, 0.5],
10,
np.inf, [9, 5],
change_indices=[2])
with pytest.raises(TypeError, match="start_value must be a scalar"):
TrackerUD(None,
3,
1, [1, 0.5], [1, 0.5],
10,
np.inf,
None,
change_indices=[2])
# test with multiple change_indices
tr = TrackerUD(None,
3,
1, [3, 2, 1], [3, 2, 1],
10,
np.inf,
1,
change_indices=[2, 4],
change_rule='reversals')
def test_tracker_ud():
"""Test TrackerUD"""
import matplotlib.pyplot as plt
tr = TrackerUD(callback, 3, 1, 1, 1, np.inf, 10, 1)
with ExperimentController('test', **std_kwargs) as ec:
tr = TrackerUD(ec, 3, 1, 1, 1, np.inf, 10, 1)
tr = TrackerUD(None, 3, 1, 1, 1, np.inf, 10, 1)
rand = np.random.RandomState(0)
while not tr.stopped:
tr.respond(rand.rand() < tr.x_current)
tr = TrackerUD(None, 3, 1, 1, 1, np.inf, 10, 1)
tr.threshold()
rand = np.random.RandomState(0)
while not tr.stopped:
tr.respond(rand.rand() < tr.x_current)
# test responding after stopped
assert_raises(RuntimeError, tr.respond, 0)
# all the properties better work
tr.up
tr.down
tr.step_size_up
tr.step_size_down
tr.stop_reversals
tr.stop_trials
tr.start_value
tr.x_min
tr.x_max
tr.stopped
tr.x
tr.responses
tr.n_trials
tr.n_reversals
tr.reversals
tr.reversal_inds
fig, ax, lines = tr.plot()
tr.plot_thresh(ax=ax)
tr.plot_thresh()
plt.close(fig)
ax = plt.axes()
fig, ax, lines = tr.plot(ax)
plt.close(fig)
tr.threshold()
tr.check_valid(2)
# bad callback type
assert_raises(TypeError, TrackerUD, 'foo', 3, 1, 1, 1, 10, np.inf, 1)
# test dynamic step size and error conditions
tr = TrackerUD(None, 3, 1, [1, 0.5], [1, 0.5], 10, np.inf, 1,
change_indices=[2])
tr.respond(True)
with warnings.catch_warnings(record=True) as w:
tr = TrackerUD(None, 1, 1, 0.75, 0.75, np.inf, 8, 1,
x_min=0, x_max=2)
responses = [True, True, True, False, False, False, False, True, False]
for r in responses: # run long enough to encounter change_indices
tr.respond(r)
assert_equal(len(w), 1)
assert(tr.check_valid(1)) # make sure checking validity is good
assert(not tr.check_valid(3))
assert_raises(ValueError, tr.threshold, 1)
tr.threshold(3)
# run tests with ignore too--should generate warnings, but no error
with warnings.catch_warnings(record=True) as w:
tr = TrackerUD(None, 1, 1, 0.75, 0.25, np.inf, 7, 1,
x_min=0, x_max=2, repeat_limit='ignore')
responses = [False, True, False, False, True, True, False, True]
for r in responses: # run long enough to encounter change_indices
tr.respond(r)
assert_equal(len(w), 1)
tr.threshold(0)
# bad stop_trials
assert_raises(ValueError, TrackerUD, None, 3, 1, 1, 1, 10, 'foo', 1)
# bad stop_reversals
assert_raises(ValueError, TrackerUD, None, 3, 1, 1, 1, 'foo', 10, 1)
# change_indices too long
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, 1, change_indices=[1, 2])
# step_size_up length mismatch
assert_raises(ValueError, TrackerUD, None, 3, 1, [1], [1, 0.5], 10,
np.inf, 1, change_indices=[2])
# step_size_down length mismatch
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1], 10,
np.inf, 1, change_indices=[2])
# bad change_rule
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, 1, change_indices=[2], change_rule='foo')
# no change_indices (i.e. change_indices=None)
assert_raises(ValueError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, 1)
# start_value scalar type checking
assert_raises(TypeError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, [9, 5], change_indices=[2])
assert_raises(TypeError, TrackerUD, None, 3, 1, [1, 0.5], [1, 0.5], 10,
np.inf, None, change_indices=[2])
# test with multiple change_indices
tr = TrackerUD(None, 3, 1, [3, 2, 1], [3, 2, 1], 10, np.inf, 1,
change_indices=[2, 4], change_rule='reversals')
print(__doc__)
# Make a callback function that prints to the console, rather than log file
def callback(event_type, value=None, timestamp=None):
print((str(event_type) + ':').ljust(40) + str(value))
# Define parameters for modeled human subject (sigmoid probability)
true_thresh = 35
slope = 0.1
chance = 0.5
# Make a tracker that uses the weighted up-down procedure to find 75%
tr = TrackerUD(callback, 1, 1, [9, 3], [3, 1], 30, np.inf, 60, [4])
# Initialize human state
rng = np.random.RandomState(1)
# Do the task until the tracker stops
while not tr.stopped:
tr.respond(rng.rand() < sigmoid(
tr.x_current - true_thresh, lower=chance, slope=slope))
# Plot the results
fig, ax, lines = tr.plot()
lines += tr.plot_thresh(4, ax=ax)
ax.set_title(
'Adaptive track of model human (true threshold is {})'.format(true_thresh))