Summary

Basic Descriptive Statistics
✖ Data Leakage
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Automated quality control for genomic machine learning datasets: scores the biases, duplicates and data leakage a classifier could exploit before you train on it.
Searching test set lncrna_z_mays_test.csv.gz against train set lncrna_z_mays_train.csv.gz
Data Leakage:✖FailHow a flag is decided →
gb-qc v1.0.0 · run 2026-09-15 22:31:28

Basic Descriptive Statistics

Filename lncrna_z_mays_test.csv.gz lncrna_z_mays_train.csv.gz
Number of sequences 1000 8000
Minimum length 201 201
Mean length 531.51 554.91
Maximum length 2467 2600
✖

Data Leakage

Every test sequence searched against the train set with MMseqs2, and scored on its best hit. Similarity is min(query coverage, target coverage) × percent identity: how much of the shorter sequence the alignment spans, times how much of that matches. The histogram is the distribution of those best hits.

The flag is the percentage of test sequences at or above the threshold: Pass at 0%, Warning below 2%, Fail at 2% or more. A test sequence that near-duplicates a training one is one the model has already seen, so the accuracy it earns there is not evidence. What to do about it →

The panel under the histogram lists those alignments, up to the first 100; every one of them, listed or not, is exported to mmseqs/mmseqs2_search_result.tsv beside this report. Its columns are:

Query (Q)
Identifier of the test sequence: seq_<i>_test, where i is its 0-based position in the input test file.
Target (T)
Identifier of the train sequence: seq_<i>_train, where i is its 0-based position in the input train file.
Q Cov.
Fraction of the query sequence covered by the alignment (0–1).
T Cov.
Fraction of the target sequence covered by the alignment (0–1).
% Identity
Percent identical aligned positions in the aligned region.
% Similarity
Similarity score used for leakage detection, calculated as min(Q Cov., T Cov.) × % Identity.
E-value
MMseqs2 E-value (lower is more "significant").
Alignment
Click “Show” to expand the alignment visualisation for a row.
Filename lncrna_z_mays_test.csv.gz lncrna_z_mays_train.csv.gz
Data Leakage (percentage) 7.40% 2.46%
Data Leakage (count) 74 197
Similarity Histogram
769 high-similarity alignments (first 100 shown)
Query (Q) Target (T) Q Cov. T Cov. % Identity % Similarity E-value Alignment
seq_681_test seq_4398_train 1.00 1.00 100.0 100.00 3.21e-217
seq_185_test seq_663_train 1.00 1.00 100.0 100.00 8.31e-188
seq_424_test seq_4705_train 1.00 1.00 100.0 100.00 0.00e+00
seq_424_test seq_21_train 1.00 1.00 100.0 100.00 0.00e+00
seq_519_test seq_4957_train 1.00 1.00 100.0 100.00 1.02e-251
seq_12_test seq_143_train 1.00 1.00 100.0 100.00 1.63e-202
seq_12_test seq_4026_train 1.00 1.00 100.0 100.00 1.63e-202
seq_749_test seq_7460_train 1.00 1.00 100.0 100.00 2.61e-166
seq_385_test seq_6353_train 1.00 1.00 100.0 100.00 0.00e+00
seq_421_test seq_6145_train 1.00 1.00 100.0 100.00 4.77e-220
seq_421_test seq_2978_train 1.00 1.00 100.0 100.00 4.77e-220
seq_421_test seq_2501_train 1.00 1.00 100.0 100.00 4.77e-220
seq_421_test seq_7600_train 1.00 1.00 100.0 100.00 4.77e-220
seq_421_test seq_4407_train 1.00 1.00 100.0 100.00 4.77e-220
seq_421_test seq_216_train 1.00 1.00 100.0 100.00 4.77e-220
seq_421_test seq_6392_train 1.00 1.00 100.0 100.00 4.77e-220
seq_418_test seq_1284_train 1.00 1.00 100.0 100.00 1.08e-212
seq_947_test seq_1443_train 1.00 1.00 100.0 100.00 9.57e-304
seq_731_test seq_3174_train 1.00 1.00 100.0 100.00 1.36e-194
seq_731_test seq_7561_train 1.00 1.00 100.0 100.00 1.36e-194
seq_731_test seq_7824_train 1.00 1.00 100.0 100.00 1.36e-194
seq_731_test seq_2770_train 1.00 1.00 100.0 100.00 1.36e-194
seq_144_test seq_5259_train 1.00 1.00 100.0 100.00 6.52e-288
seq_144_test seq_6106_train 1.00 1.00 100.0 100.00 6.52e-288
seq_774_test seq_6145_train 1.00 1.00 100.0 100.00 4.77e-220
seq_774_test seq_2978_train 1.00 1.00 100.0 100.00 4.77e-220
seq_774_test seq_2501_train 1.00 1.00 100.0 100.00 4.77e-220
seq_774_test seq_7600_train 1.00 1.00 100.0 100.00 4.77e-220
seq_774_test seq_4407_train 1.00 1.00 100.0 100.00 4.77e-220
seq_774_test seq_216_train 1.00 1.00 100.0 100.00 4.77e-220
seq_774_test seq_6392_train 1.00 1.00 100.0 100.00 4.77e-220
seq_980_test seq_6337_train 1.00 1.00 100.0 100.00 3.77e-182
seq_940_test seq_6353_train 1.00 1.00 100.0 100.00 0.00e+00
seq_772_test seq_7153_train 1.00 1.00 100.0 100.00 1.16e-229
seq_902_test seq_3174_train 1.00 1.00 100.0 100.00 1.36e-194
seq_902_test seq_7561_train 1.00 1.00 100.0 100.00 1.36e-194
seq_902_test seq_7824_train 1.00 1.00 100.0 100.00 1.36e-194
seq_902_test seq_2770_train 1.00 1.00 100.0 100.00 1.36e-194
seq_693_test seq_2500_train 1.00 1.00 100.0 100.00 1.00e-264
seq_393_test seq_5448_train 1.00 1.00 100.0 100.00 0.00e+00
seq_185_test seq_3947_train 1.00 1.00 99.7 99.70 4.04e-186
seq_519_test seq_5969_train 1.00 1.00 99.7 99.70 4.92e-250
seq_519_test seq_5688_train 1.00 1.00 99.7 99.70 4.92e-250
seq_583_test seq_6333_train 1.00 1.00 99.7 99.70 3.60e-195
seq_418_test seq_4111_train 1.00 1.00 99.7 99.70 5.22e-211
seq_957_test seq_4095_train 1.00 1.00 99.7 99.70 4.56e-233
seq_359_test seq_4095_train 1.00 1.00 99.7 99.70 4.56e-233
seq_844_test seq_2328_train 1.00 1.00 99.7 99.70 5.11e-224
seq_149_test seq_7311_train 1.00 1.00 99.7 99.70 2.74e-239
seq_738_test seq_5525_train 1.00 1.00 99.8 99.60 8.10e-288
seq_217_test seq_5954_train 1.00 1.00 99.6 99.60 0.00e+00
seq_738_test seq_3889_train 1.00 1.00 99.6 99.60 8.25e-287
seq_484_test seq_6473_train 1.00 1.00 99.6 99.60 4.15e-173
seq_927_test seq_1476_train 1.00 1.00 99.7 99.50 3.58e-226
seq_645_test seq_2730_train 1.00 1.00 99.6 99.50 0.00e+00
seq_927_test seq_2344_train 1.00 1.00 99.5 99.50 3.65e-225
seq_844_test seq_7138_train 1.00 1.00 99.5 99.50 2.46e-222
seq_844_test seq_7762_train 1.00 1.00 99.5 99.50 2.46e-222
seq_317_test seq_7070_train 1.00 1.00 99.7 99.40 6.69e-211
seq_690_test seq_7030_train 1.00 1.00 99.7 99.40 4.95e-212
seq_121_test seq_3910_train 1.00 1.00 99.4 99.40 1.69e-206
seq_121_test seq_7913_train 1.00 1.00 99.4 99.40 1.69e-206
seq_152_test seq_1777_train 1.00 1.00 99.4 99.40 1.07e-186
seq_152_test seq_4314_train 1.00 1.00 99.4 99.40 1.07e-186
seq_954_test seq_1755_train 1.00 1.00 99.4 99.40 1.58e-189
seq_418_test seq_3219_train 1.00 1.00 99.4 99.40 2.51e-209
seq_96_test seq_2116_train 1.00 1.00 99.4 99.40 2.64e-183
seq_96_test seq_7045_train 1.00 1.00 99.4 99.40 2.64e-183
seq_96_test seq_151_train 1.00 1.00 99.4 99.40 2.64e-183
seq_883_test seq_1670_train 1.00 1.00 99.4 99.40 2.57e-196
seq_883_test seq_666_train 1.00 1.00 99.4 99.40 2.57e-196
seq_626_test seq_1777_train 1.00 1.00 99.4 99.40 1.07e-186
seq_626_test seq_4314_train 1.00 1.00 99.4 99.40 1.07e-186
seq_419_test seq_1670_train 1.00 1.00 99.4 99.40 2.57e-196
seq_419_test seq_666_train 1.00 1.00 99.4 99.40 2.57e-196
seq_816_test seq_2106_train 1.00 1.00 99.7 99.30 9.73e-258
seq_816_test seq_1724_train 1.00 1.00 99.7 99.30 9.73e-258
seq_217_test seq_2891_train 1.00 1.00 99.3 99.30 0.00e+00
seq_275_test seq_7905_train 1.00 1.00 99.3 99.30 6.90e-240
seq_275_test seq_3846_train 1.00 1.00 99.3 99.30 6.90e-240
seq_70_test seq_705_train 1.00 1.00 99.3 99.30 1.39e-241
seq_70_test seq_3653_train 1.00 1.00 99.3 99.30 1.39e-241
seq_90_test seq_705_train 1.00 1.00 99.3 99.30 1.39e-241
seq_90_test seq_3653_train 1.00 1.00 99.3 99.30 1.39e-241
seq_208_test seq_7398_train 1.00 1.00 99.3 99.30 5.57e-238
seq_208_test seq_2673_train 1.00 1.00 99.3 99.30 5.57e-238
seq_208_test seq_7250_train 1.00 1.00 99.3 99.30 5.57e-238
seq_208_test seq_3416_train 1.00 1.00 99.3 99.30 5.57e-238
seq_663_test seq_3427_train 1.00 1.00 99.4 99.10 0.00e+00
seq_217_test seq_1952_train 1.00 1.00 99.1 99.10 0.00e+00
seq_217_test seq_5381_train 1.00 1.00 99.1 99.10 0.00e+00
seq_36_test seq_4303_train 1.00 1.00 99.1 99.10 1.30e-254
seq_755_test seq_6688_train 1.00 1.00 99.1 99.10 2.22e-132
seq_755_test seq_1621_train 1.00 1.00 99.1 99.10 2.22e-132
seq_462_test seq_3323_train 1.00 1.00 99.1 99.10 4.86e-241
seq_959_test seq_6930_train 1.00 0.99 99.5 99.00 0.00e+00
seq_125_test seq_6930_train 1.00 0.99 99.5 99.00 0.00e+00
seq_217_test seq_6872_train 1.00 1.00 99.0 99.00 0.00e+00
seq_275_test seq_3155_train 1.00 1.00 99.0 99.00 3.27e-238
seq_275_test seq_4631_train 1.00 1.00 99.0 99.00 3.27e-238