From Personal AI Tools to Industry Platforms: A Multi-Level Framework for AI Application Development

The author analyzes the evolution of AI applications after two years of ChatGPT, identifying three main bottlenecks: insufficient compute, high API costs, and model compliance issues. They propose a five‑level classification (L1–L5) for AI use cases, ranging from simple chatbots to enterprise‑grade solutions.

Building on this, a six‑level hierarchy is introduced, describing user personas from "novice" (no data or engineering skill) to "industry experts" (deep domain knowledge and data). The core of successful AI deployment is converting expert know‑how into explicit SOPs (Standard Operating Procedures) and structured data, which can be fed to large language models (LLMs) via retrieval‑augmented generation (RAG) or fine‑tuning.

Examples from education illustrate how SOPs can evaluate student performance (vocabulary accuracy, sentence complexity, fluency) and generate targeted feedback. An AI SOP generation platform enables teachers without engineering skills to create custom workflows, reducing reliance on proprietary models and improving stability.

The article also discusses challenges such as model hallucination, keyword extraction errors, and the need for domain‑specific knowledge graphs. Industry‑specific agents (e.g., medical, legal, finance) are presented as the next step, leveraging data‑protected knowledge bases to achieve higher accuracy than generic models.

Finally, the author argues that the most effective path forward is to treat LLMs as foundational capabilities while building domain‑specific SOPs and data pipelines, rather than waiting for models to evolve on their own.

请根据以下学生写作样本，结合下列分析要点进行评价：
1. **词汇准确率**：判断学生是否准确使用了合适的词汇，是否存在表达生硬或词汇欠缺的问题。
2. **句子结构复杂度**：判断学生是否使用了复合句或仅限于简单句，分析句子结构是否多样化。
3. **表达流畅性**：分析学生的句子之间是否有自然的衔接和过渡，是否存在断裂或生硬之处。
4. **整体写作水平**：基于以上三个方面，综合判断学生的写作水平（例如：初级、初中级、中级等）。

以下是学生的写作样本：
“I went to the park last weekend and saw many beautiful flowers. The park was full of green trees and joyful people.”

请输出一份详细评估报告，包括：
- 针对每个方面的具体分析和例证；
- 对学生目前英语写作水平的整体评估；
- 针对存在的问题给出具体的改进建议（如提升词汇多样性、增加复合句使用、加强段落衔接等）。

请确保评估报告具有逻辑性和针对性，以便为后续教学和个性化提升提供依据。