.circular_block_permute

Generates a permutation of time indices by concatenating random-length blocks
sampled circularly from the ordered sequence. Used for creating
block-permuted surrogates that preserve short-range temporal structure.

internal

Prevents and detects information leakage in biomedical machine learning.
Provides leakage-resistant split policies (subject-grouped, batch-blocked, study leave-out, time-ordered),
guarded preprocessing (train-only imputation, normalization, filtering, feature selection),
cross-validated fitting with common learners, permutation-gap auditing, batch and fold association tests,
and duplicate detection.

Selcuk Korkmaz

bioLeak

Leakage-Safe Modeling and Auditing for Genomic and Clinical Data

.circular_block_permute function

<dl><dt>idx</dt>
<dd>Integer vector of ordered indices.</dd>
<dt>block_len</dt>
<dd>Positive integer block length (&gt;= 1).</dd></dl>

Arguments

Circular block permutation indices — .circular_block_permute

<dl>

<dt>idx</dt>
<dd>Integer vector of ordered indices.</dd>


<dt>block_len</dt>
<dd>Positive integer block length (&gt;= 1).</dd>

</dl>

.circular_block_permute: Circular block permutation indices

Description

Usage

Value

Arguments