After the upgrade of Turnitin's aigc detection algorithm, how to reduce the AI rate when it is high?

Recently, Turnitin's aigc algorithm has been upgraded again. Good guy, it's only half of 2025, and I 've already been upgraded twice. Writing papers has made me bald. Now Turnitin has to check the aigc rate again. After several nights' work, the paper has been modified, and the duplicate check has passed. But looking at the AI rate, it's as red as the ECG with soaring blood pressure, Turnitin， Almost, okay!

1 Characteristics of new Turnitin detection algorithm

Stronger detection capability

It is no longer just about detecting words, but from multiple perspectives. Semantic coherence, logicality, sentence structure, word usage habits, paragraph organization, etc. can be detected. It can also be detected across languages. This means that after you translate the English AI content into Chinese, the system may detect it. If you do not change the expression, you can also make a comprehensive judgment now, such as references, charts, etc. if the literature you quote is false, or the format is wrong, or the text is inconsistent with the citation, it is likely to be identified. If the coordinate axis, color matching, etc. in the chart are inconsistent, it may also be judged as AI generation.

Higher detection accuracy

Some paragraphs once judged as "safe" may now be marked as "need to be modified" by the system, mainly including these two points:

1. if the title format is too standard, it may also be considered to be automatically generated by AI

2. some proper nouns or organization names will also be marked as AI generated if they occur repeatedly.

2 Reasons for high aigc

AI high frequency words

There are often some "fixed routines" in the text generated by AI, such as a large number of connectives such as "therefore", "so" and "in addition" are used, the sentence structure is too uniform, and the feeling of "too standard" arises spontaneously, lacking the natural ups and downs of human writing and the personality characteristics of expression. For example, "AI technology has been widely used in this field, which can improve the diagnostic efficiency". Although these words read smoothly, they can be easily recognized in the upgraded HowNet.

Lack of personalized content

Many students directly copy the text generated by AI without changing a word. If the whole paper is simply copied, pasted and pieced together, the value of aigc will remain high.

Nonstandard citation

Another problem that is easy to be ignored is the citation of references. If the citation is not standardized, such as no serial number, disordered format, wrong location, etc., it may be misjudged by the system as the part of AI generated indiscriminately, especially in the case of the new HowNet standard, some minor omissions may also make the aigc value of the whole article higher.

3 Lower aigc instruction

-Role-

You want to be a senior text reconstruction expert, who specializes in reshaping the text generated by AI into a natural, smooth text with obvious human expression characteristics. Your main task is to get rid of those stiff and mechanical language feelings, and make careful adjustments from the aspects of language style, emotional communication and logical connection without changing the original meaning, so as to make the content closer to the real human writing.

-Professional background-

You are an expert in the field of text reconstruction. You know how to polish the text generated by AI into a natural and warm human language expression. You have a good understanding of the style and laws of human writing. You can accurately find and correct some common problems in AI text, such as repeated words, lack of emotional color, and incoherent logic, so as to make the content closer to reality and more expressive.

-Core skills-

1. accurately find the patterned expression in AI text

2. use creative writing skills, vocabulary reorganization, sentence pattern improvement, emotional filling, etc

3. have professional editing ability, can optimize the structure and logic of the text, and make the writing more fluent

-Work objectives-

1. change AI text into a close to human writing style

2. strengthen the oral characteristics of the text

3. strengthen emotional expression and personalization

4. ensure the attractiveness and readability of the content

-Working principle-

1. keep the core information of the original text accurate

2. do not change the theme of the article

3. ensure rich and vivid language expression

-Output format-

The optimized text is as follows, with specific modification suggestions and optimization instructions attached

-Workflow-

1. analyze AI text features

2. optimization of vocabulary and sentence patterns

3. enhance emotional expression

4. adjust text structure

5. make the final touch up

6. provide modification instructions