# Language Modeling on WikiText-2 raw-v1 (test) Source: [Language Modeling on WikiText-2 raw-v1 (test)]() Collection index: [llms.txt]() Data updated: 2026-05-18T09:28:33.819Z Evaluation of language modeling performance using the test split of the raw version 1 of the WikiText-2 dataset, focusing on Delta Perplexity (ΔPPL) and Information/Reduction (I/R) metrics. A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. | Scope | Recorded value | | --- | --- | | Task | Language Modeling | | Dataset (including any stated split) | WikiText-2 raw-v1 (test) | | Metric | Delta PPL (n=1) | | Unit | SCALAR | | Direction | Lower is better | | Results loaded | 8 of 8 | | Coverage | All results currently returned for this benchmark | Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol. ## Metrics - [Delta PPL (n=1)](): Lower is better; unit: SCALAR. - [Delta PPL (n=3)](): Lower is better; unit: SCALAR. - [Delta PPL (n=5)](): Lower is better; unit: SCALAR. - [Information/Reduction (n=1)](): Higher is better; unit: PERCENT. - [Information/Reduction (n=3)](): Higher is better; unit: PERCENT. - [Information/Reduction (n=5)](): Higher is better; unit: PERCENT. ## Recorded results | Method | Delta PPL (n=1) | Result date | Report paper | | --- | --- | --- | --- | | Interchange (clustered) | 2.5 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | | SLEB-iterative | 2.5 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | | BI-guided | 2.5 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | | Interchange | 11 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | | BI-guided | 11 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | | Replacement | 11.3 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | | SLEB-iterative | 11.6 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | | Replacement | 16.7 | Not recorded | 6a0a9d3adbc836b87d82b5e8 | ### Interchange (clustered) Delta PPL (n=1): 2.5. Result ID: 6a0adaf247f34ce924f14df3. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Qwen3-8B","Precision":"bf16","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. ### SLEB-iterative Delta PPL (n=1): 2.5. Result ID: 6a0adaf247f34ce924f14df5. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Qwen3-8B","Precision":"bf16","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. ### BI-guided Delta PPL (n=1): 2.5. Result ID: 6a0adaf247f34ce924f14df6. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Qwen3-8B","Precision":"bf16","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. ### Interchange Delta PPL (n=1): 11. Result ID: 6a0adaf247f34ce924f14df7. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Pythia-1.4B","Precision":"fp32","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. ### BI-guided Delta PPL (n=1): 11. Result ID: 6a0adaf247f34ce924f14dfa. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Pythia-1.4B","Precision":"fp32","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. ### Replacement Delta PPL (n=1): 11.3. Result ID: 6a0adaf247f34ce924f14df4. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Qwen3-8B","Precision":"bf16","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. ### SLEB-iterative Delta PPL (n=1): 11.6. Result ID: 6a0adaf247f34ce924f14df9. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Pythia-1.4B","Precision":"fp32","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. ### Replacement Delta PPL (n=1): 16.7. Result ID: 6a0adaf247f34ce924f14df8. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Backbone":"Pythia-1.4B","Precision":"fp32","Words":"5K","Window":"512","Stride":"256"}. This record does not assert independent reproduction. Page 1 of 1. This is an index page, not the full collection.