VERIFIED

dai-lab__copulas-87

VERIFIED on first verdict

1 attempt, 0 appeals. 1 file, 22 added and 3 removed lines. Tokens: 120,467 tokens. Model cost: $0.04. Sandbox time: 1 min 7 s.

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The plan

Repository: dai-lab/copulas
Base commit: cb6bdf5 (image tag)
Issue: Make vine copulas sample use num_rows arg. Currently the sample method on `copulas.multivariate.vine.VineCopulas` doesn't take in consideration the argument num_rows, would be useful to either delete it, or make it work.

Files to edit

copulas/multivariate/vine.py

Approach: Refactor the body of the existing `sample` method into a private helper method `_sample_row(self)` that returns a single sample as a NumPy array. Then modify the public `sample(self, num_rows=1)` method to call `_sample_row` exactly `num_rows` times, collect the results, and return them as a DataFrame with the original column names.

Attempt 1

VERIFIED

Agent branch

Kind	Command	Exit	Duration	Digest
command	`git ls-files -z` exact command git ls-files -z	0	0.004s	0413d24e
write	`write copulas/multivariate/vine.py` exact command /opt/receipts-aa53701c660248ac9f99430bdbfebc41/bin/busybox sh -c 'mkdir -p /Copulas/copulas/multivariate && cp /opt/receipts-aa53701c660248ac9f99430bdbfebc41/incoming/333edf4ca679421c9f3a51e7a3692dfb046032a45e3386617f34c9559962bcc7 /Copulas/copulas/multivariate/vine.py'	0	0.005s	5d08110f
command	`pytest tests/copulas/multivariate/test_vine.py::TestVine::test_sample -v` exact command /opt/receipts-a63fafefef8c4540835fe994ce6a4325/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-a63fafefef8c4540835fe994ce6a4325/receipts_pytest.py tests/copulas/multivariate/test_vine.py::TestVine::test_sample -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-3.xml	1	0.825s	f31abeb59611
write	`write copulas/multivariate/vine.py` exact command /opt/receipts-2135e9dc8ced4d02a14ce2fc207a2ef7/bin/busybox sh -c 'mkdir -p /Copulas/copulas/multivariate && cp /opt/receipts-2135e9dc8ced4d02a14ce2fc207a2ef7/incoming/b89b2a36d22e2a7faece289f702bf914e8a5a76be15a23d96625f3d25a5f2d66 /Copulas/copulas/multivariate/vine.py'	0	0.005s	8a535b5a
command	`pytest tests/copulas/multivariate/test_vine.py::TestVine::test_sample -v` exact command /opt/receipts-6d1ed9ae760042eabaf3c05f7ed067e9/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-6d1ed9ae760042eabaf3c05f7ed067e9/receipts_pytest.py tests/copulas/multivariate/test_vine.py::TestVine::test_sample -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-5.xml	1	0.855s	af85e2896218
command	`find . -name ".py" -exec grep -l "numpy_to_dataframe\\|dataframe_to_numpy" {} \;` exact command find . -name ".py" -exec grep -l "numpy_to_dataframe\\|dataframe_to_numpy" {} \;	0	0.045s	0b450f22
command	`grep -r "def.dataframe" copulas/ --include=".py"` exact command grep -r "def.dataframe" copulas/ --include=".py"	1	0.004s	3bae43c5
write	`write copulas/multivariate/vine.py` exact command /opt/receipts-472f3753aefb4df0b1e991bfc09d87e8/bin/busybox sh -c 'mkdir -p /Copulas/copulas/multivariate && cp /opt/receipts-472f3753aefb4df0b1e991bfc09d87e8/incoming/e0d0f6a6a3e6d248aed147b0a08a033708f9ed4b785632fc750bc4fbeb62ded4 /Copulas/copulas/multivariate/vine.py'	0	0.005s	841d99ff
write	`write copulas/multivariate/vine.py` exact command /opt/receipts-5d4386dced2d40e59d20917d05906d65/bin/busybox sh -c 'mkdir -p /Copulas/copulas/multivariate && cp /opt/receipts-5d4386dced2d40e59d20917d05906d65/incoming/e43130652ec32001cceb8d1d18de157374a0cee34a18d63815c852dec374ee4a /Copulas/copulas/multivariate/vine.py'	0	0.005s	42ee5ac6
command	`pytest tests/copulas/multivariate/test_vine.py::TestVine::test_sample -v` exact command /opt/receipts-e02adc9b3534402e9732da84fa6475aa/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-e02adc9b3534402e9732da84fa6475aa/receipts_pytest.py tests/copulas/multivariate/test_vine.py::TestVine::test_sample -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-10.xml	0	0.809s	6e9a067e4fbb
command	`pytest tests/copulas/multivariate/test_vine.py` exact command /opt/receipts-defbc739eb9b48f39a2c23d57946f481/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-defbc739eb9b48f39a2c23d57946f481/receipts_pytest.py tests/copulas/multivariate/test_vine.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-11.xml	0	1.017s	6e9a067e4fbb
diff	`capture patch` exact command compute patch in executor staging agent1-2e170bcd9a3b480bbf91df4273ebd94a: /opt/homebrew/Cellar/git/2.53.0/bin/git -c core.hooksPath=/dev/null -c core.attributesFile=/dev/null -c diff.external= -c core.quotePath=false add -A && /opt/homebrew/Cellar/git/2.53.0/bin/git -c core.hooksPath=/dev/null -c core.attributesFile=/dev/null -c diff.external= -c core.quotePath=false diff --cached --binary --no-ext-diff --no-textconv --no-renames 131fc916b30fe1b8d8c5404864fd540b386334ec	0	0.129s	6e9a067e4fbb

Finish summary: Fixed the VineCopula.sample method to properly use the num_rows argument by refactoring the sampling logic into a private _sample_row helper method and calling it num_rows times to generate multiple samples. Also added column name preservation during fitting to ensure proper DataFrame output.
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: copulas/multivariate/vine.py
Ran tests: yes

Witness branch w1

Kind Command Exit Duration Digest

apply

Kind	Command	Exit	Duration	Digest
apply	`apply patch 2368f528c770` exact command git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-0ce3db22e6ad418faf4dacffd5ab1caa/incoming/2368f528c770bc07877a06efbdbe4a80f9823040cc80eb42076416d350075eec.diff	0	0.008s	6e9a067e4fbb
verification	`pytest (witness) tests/copulas/multivariate/test_vine.py` exact command /opt/receipts-5fbc9efd2eca48debd2b4d2b042b432b/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-5fbc9efd2eca48debd2b4d2b042b432b/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/copulas/multivariate/test_vine.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml	0	1.016s	6e9a067e4fbb

apply patch 2368f528c770

exact command

git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-0ce3db22e6ad418faf4dacffd5ab1caa/incoming/2368f528c770bc07877a06efbdbe4a80f9823040cc80eb42076416d350075eec.diff

0.008s

6e9a067e4fbb

verification

pytest (witness) tests/copulas/multivariate/test_vine.py

exact command

/opt/receipts-5fbc9efd2eca48debd2b4d2b042b432b/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-5fbc9efd2eca48debd2b4d2b042b432b/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/copulas/multivariate/test_vine.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml

1.016s

6e9a067e4fbb

Gate predicate checklist

Predicate	Name	Status	Evidence
`R1_fail_to_pass`	Failing specification tests now pass	PASS	target tests passed: tests/copulas/multivariate/test_vine.py::TestVine::test_sample
`R2_pass_to_pass`	Previously passing tests kept	PASS	5 baseline-passing tests still pass
`R3_no_shrink`	No removed tests or new skips	PASS	all 6 baseline tests collected; skips unchanged (0)
`R4_patch_scope`	Patch scope	PASS	patch touches 1 file(s), all in scope
`R5_provenance`	Witness chain and patch digest	PASS	agent chain 754d9ab2 -> 3b5a6fcc unbroken over 12 receipt(s); witness chain 754d9ab2 -> dc9cd917 unbroken over 2 receipt(s); applied digest matches
`R6_claim_audit`	Agent claim audit (advisory)	PASS	claimed green; own last run: 6 passed, 0 failed

What it said

Finish summary: Fixed the VineCopula.sample method to properly use the num_rows argument by refactoring the sampling logic into a private _sample_row helper method and calling it num_rows times to generate multiple samples. Also added column name preservation during fitting to ensure proper DataFrame output.
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: copulas/multivariate/vine.py
Ran tests: yes

What the record shows

honest: claimed green; own last run: 6 passed, 0 failed

SWE-rebench's official grader: resolved

Agrees with the gate

Shipped patch

diff --git a/copulas/multivariate/vine.py b/copulas/multivariate/vine.pyindex 720c56f..c11b769 100644--- a/copulas/multivariate/vine.py+++ b/copulas/multivariate/vine.py@@ -85,6 +85,12 @@ class VineCopula(Multivariate):             X: `np.ndarray`: data to be fitted.             truncated: `int` max level to build the vine.         """+        # Store column names if X is a DataFrame+        if hasattr(X, 'columns'):+            self.columns = list(X.columns)+        else:+            self.columns = [f'X{i}' for i in range(X.shape[1])]+                     self.n_sample, self.n_var = X.shape         self.tau_mat = X.corr(method='kendall').values         self.u_matrix = np.empty([self.n_sample, self.n_var])@@ -134,8 +140,8 @@ class VineCopula(Multivariate):          return np.sum(values) -    def sample(self, num_rows=1):-        """Generating samples from vine model."""+    def _sample_row(self):+        """Generate a single sample from the vine model."""         unis = np.random.uniform(0, 1, self.n_var)         # randomly select a node to start with         first_ind = randint(0, self.n_var - 1)@@ -180,7 +186,7 @@ class VineCopula(Multivariate):                                 break                      if current_ind != -1:-                        # the node is not indepedent contional on visited node+                        # the node is not independent conditional on visited node                         copula_type = current_tree[current_ind].name                         copula = Bivariate(CopulaTypes(copula_type))                         copula.theta = current_tree[current_ind].theta@@ -211,3 +217,16 @@ class VineCopula(Multivariate):             visited.insert(0, current)          return sampled++    def sample(self, num_rows=1):+        """Generating samples from vine model.+        +        Args:+            num_rows: Number of rows to sample.+            +        Returns:+            pandas.DataFrame with sampled data.+        """+        import pandas as pd+        samples = np.vstack([self._sample_row() for _ in range(num_rows)])+        return pd.DataFrame(samples, columns=self.columns)

Model and costs

Model: NVIDIA Nemotron 3 Super thinking off · temperature 1.0 · top_p 0.95
Tokens: 120,467 tokens
Model cost: $0.04
Sandbox time: 1 min 7 s
Sandbox cost: Token Factory reported cost: 0.085 (unit not published)

Full environment disclosure

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The bundle

Recorded JSON and patches. In these copies the local checkout path is removed from file paths, and the home directory is shown as ~.