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Regular Language Classification on 21 Regular Tasks OOD lengths 41–500

100Even PairsLSTM
50.28863.19476.189.006May 25, 2026

Evaluation results

MethodLinks
LSTM2026.0510010010060.310097.710098.48982.110010010010010010010010010010097.3
BBT-GRC2026.051009410010010098.584.684.784.390.599.499.410010010010099.9100100100100
MLP-LDRU2026.0510010010010010010010098.598.196100100100100100100100100100100100
TFPositional Encoding=~RoPE2026.0591.531.449.923.398.292.597.698.498.798.770.785.574.35010089.286.458.579.551.658.2
RNN2026.0577.41001001001001009597.199.292.710010010010010082.265.499.461.496.985
TFPositional Encoding=ALiBi2026.0561.154.449.921.610098.39692.389.784.410010074.35010056939040.33121.3
Gated DeltaNet2026.0552.276.553.425.810091.693.175.67674.699.999.175.154.710052.42218.930.121.569.4