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+ ---
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+ license: other
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+ license_name: lfm1.0
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+ license_link: LICENSE
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+ base_model: LiquidAI/LFM2.5-1.2B-Instruct
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+ language:
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+ - de
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+ - en
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+ pipeline_tag: text-generation
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+ tags:
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+ - gguf
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+ - lfm2
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+ - german
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+ - language-learning
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+ - on-device
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+ ---
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+
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+ # Laura — German tutor in English (LFM2.5 1.2B, GGUF)
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+
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+ Laura is the tutor in an offline German course app for adult beginners
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+ (A1–A2). This model talks to the learner in English and teaches German with
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+ German examples. It runs on the phone, CPU only.
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+
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+ **This is a modified version of [LiquidAI/LFM2.5-1.2B-Instruct](https://huggingface.co/LiquidAI/LFM2.5-1.2B-Instruct).**
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+ Changes made: a LoRA adapter (rank 16, all linear layers, 2 epochs) was trained
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+ on ~2,500–3,300 short tutoring conversations in English, merged into the weights,
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+ and the result converted to GGUF and quantised to Q4_K_M with llama.cpp.
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+ Distributed under the base model's LFM Open License v1.0 — see [LICENSE](LICENSE).
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+
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+ ## How the app uses it
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+
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+ The app does not trust the model to judge German on its own. It checks the
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+ learner's sentence with its own dictionary first and adds the verdict to the
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+ message — `(Check: ✗ → „corrected sentence“ · reason)` or `(Check: ✓ …)` — plus
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+ dictionary meanings and the chapter's rule card. The model was trained with
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+ exactly those notes and explains them; without them it is a much weaker teacher.
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+
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+ ## Evaluation
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+
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+ Hand-graded on held-out conversations it never saw in training: correct
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+ teaching in 80% of replies (every German fact and reason right).
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+
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+ ## Files
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+
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+ - `laura-en-lfm2.5-1.2b-Q4_K_M.gguf` — Q4_K_M, 0.73 GB