Lowering AIGC Rate from 50% to Under 10%: Real Rewriting Case Study

What this page helps you do first

• Complete process of a real rewriting case
• Step-by-step operations from 50% to under 10%
• Comparative analysis before and after rewriting

Case background: what kind of thesis is this

The student used AI tools to complete the first draft, approximately 25,000 characters, with an initial AIGC rate of 52%. The paper had complete structure and clear logic, but almost entirely used AI writing style.

The target institution required AIGC rate below 20% and did not accept excuses for initial test failures.

Step 1: Diagnose high AI-feature paragraphs

Use the detection report to locate consecutively marked paragraphs. Approximately 12 paragraphs were densely marked, with literature review, research methods, and conclusion/discussion sections being the most severe.

These 12 paragraphs are the priority for modification; the remaining lightly marked paragraphs can be handled later.

Step 2: Rewrite literature review paragraphs

• Original problem: nearly identical sentence lengths (25-30 characters), highly regular transition words ("firstly," "secondly," "finally" throughout)
• Rewrite strategy: break long sentences, introduce specific research data, add author commentary
• After rewriting, AIGC features significantly decreased, paragraph reduced from high to light markers

Step 3: Rewrite research methods paragraphs

• Original problem: method descriptions using standard textbook-style expressions, highly templated sentence structures
• Rewrite strategy: add specific implementation details for this research, replace general expressions with specific scenario descriptions
• Add first-person descriptions ("this research adopts," "this paper selects")

Step 4: Rewrite conclusion and discussion paragraphs

• Original problem: conclusion sentences too long, each paragraph following the same "findings-significance-limitations" structure
• Rewrite strategy: disrupt paragraph structure order, move some conclusion sentences to middle of paragraphs
• Add research limitations and future research directions in conclusion sections

Data comparison after rewriting

• Overall AIGC rate: from 52% to 11%
• Highly marked paragraphs: from 12 to 2 (both within acceptable range)
• Rewritten content: approximately 15% of total text
• Academic quality maintained: argument logic and core points not affected

Frequently asked questions

Does 50% AIGC rate mean most of the paper was written by AI?

Not necessarily. AIGC rate reflects statistical patterns of writing style, not content source. 52% means the writing style is highly AI-like, but not necessarily that content was AI-generated.

Is it possible to reduce by 40+ percentage points by rewriting only 15%?

Possible. The key is to precisely locate high-feature paragraphs and perform effective structural rewriting, not vague modifications throughout. If only minor word changes are made, the effect will be limited.

How to ensure academic quality does not decline during rewriting?

Core principle: rewrite sentence structure and expression, do not change argument logic; rewrite general expressions, do not alter technical terms; rewrite structure order, do not delete necessary content.