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Fine-Tuning vs RAG vs Prompting
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Prefix-tuning is a parameter-efficient adaptation method studied by Li and Liang.
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It freezes a pretrained language model and learns continuous task-specific prefix vectors that influence the model’s attention computations.
Prefix-tuning prepends trainable continuous vectors to the key and value activations at transformer layers while freezing the pretrained model parameters. Li and Liang evaluate the method on table-to-text generation and summarization. In their reported experiments, the method learns about 0.1% of the model parameters. They also report that prefix-tuning outperformed full fine-tuning in some evaluated low-data settings and performed competitively in other studied conditions. These are results tied to the paper’s model, tasks and data splits, not universal guarantees.
The paper evaluates prefix-tuning on WebNLG table-to-text generation.
The paper evaluates summarization with a pretrained BART model.
A task-specific prefix can be stored separately while the pretrained backbone remains frozen.
The paper compares prefix-tuning with full fine-tuning in full-data and low-data settings.
When reproducing the paper, record the backbone, task, data split, prefix length, and parameter count. Compare against full fine-tuning on the same evaluation and avoid assuming the paper’s results transfer unchanged to other models or deployment settings.
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Prefix-tuning is a parameter-efficient adaptation method studied by Li and Liang. It freezes a pretrained language model and learns continuous task-specific prefix vectors that influence the model’s attention computations.
Urekebishaji wa kiambishi awali husimamisha uti wa mgongo na hujifunza seti ndogo tu ya vivekta vya kiambishi awali, na kuifanya kuwa na vigezo.
Urekebishaji wa kiambishi awali hutayarisha vekta za vitufe/thamani zinazoweza kufunzwa katika umakinifu wa kila safu ya kibadilishaji, si ingizo pekee.
Urekebishaji wa kiambishi awali ulipendekezwa na Xiang Lisa Li na Percy Liang huko Stanford mnamo 2021.
Kwa sababu kiambishi awali kidogo pekee ndicho mahususi, unahifadhi faili moja ndogo kwa kila kazi badala ya kunakili modeli nzima.
MLP ndogo hutengeneza kiambishi awali wakati wa mafunzo kwa uthabiti, kisha hutupwa, na kuacha tu viambishi awali vilivyofunzwa.
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InayofuataMwongozo unaofuata
Fine-Tuning vs RAG vs Prompting
Lugha AI