From Monolithic to Modular: Segment-level Automatic Prompt Optimization
Automatic Prompt Optimization (APO) often rewrites prompts monolithically, which can improve one behavior while degrading others. We present SAPO, a segment-level APO method that decomposes prompts into role, context, tasks, and output format, then applies targeted improvements based on top-5 and bottom-5 examples. The optimization loop uses one LLM with static meta-prompts and structured outputs for segmentation, weakness analysis, and candidate generation. We describe a train/validation protocol and a two-stage generation process: (1) segment-level diagnosis and recommendation extraction, (2) candidate synthesis constrained by weak/strong segment signals.
Using the evaluation setup across SQuADv2, Tweet Eval, XSUM, Common Gen, and GSM8K on GPT-3.5-Turbo and GPT-4o-mini, SAPO achieves the best average score against Zero-shot and strong APO baselines including APE, OPRO, Evo Prompt, GEPA, and StraGO. ar Xiv Labs is a framework that allows collaborators to develop and share new ar Xiv features directly on our website. Both individuals and organizations that work with ar Xiv Labs have embraced and accepted our values of openness, community, excellence, and user data privacy. ar Xiv is committed to these values and only works with partners that adhere to them.
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โก Effects Interpreter
๐World Economy
- โถTrade and investment between countries could shift a little if things escalate.
- โถGlobal supply chains might feel a small tremor as businesses adjust.
๐๏ธLocal Economy
- โถYour weekly shop could get a touch dearer, or cheaper, down the line.
- โถJobs and trade close to home may feel a soft knock-on effect.
๐ฆRates & Banks
- โถInterest rates and mortgage bills are unlikely to jump straight away from this alone.
- โถCentral banks watch moments like this closely, so keep an eye on savings rates.
โค๏ธHealth
- โถLocal health services could get busier depending on how things develop.
- โถUnsettling news can weigh on sleep and mood, so peace of mind matters.
๐ทWealth
- โถSavings and portfolios can see short-lived ups and downs after this kind of news.
- โถIt could be worth a quick look at your ISA or pension in the coming days.
๐ Housing
- โถThe property market tends to move slowly, so expect any change to take time.
- โถMortgage deals could edge around if lenders read the wider mood.