Turnitin AI 检测跳过哪些内容？非散文、代码等

Turnitin 的 AI 检测器不分析你文档的每一部分。FAQ 声明："This qualifying text includes only prose sentences, meaning that we only analyze blocks of text that are written in standard grammatical sentences and do not include other types of writing such as lists, bullet points (short non-sentence structures), or other non-sentence structures." 模型还"does not reliably detect AI-generated text in the form of non-prose, or code." FAQ 补充："In addition, we are not pursuing ChatGPT code detection at this time." 一篇 Turnitin 帮助文章提供了更广的列表："The model does not reliably detect AI-generated text in the form of non-prose, such as poetry, scripts, or code, nor does it detect short-form/unconventional writing such as bullet points, tables, or annotated bibliographies." 这意味着你的 AI 分只反映文档中的散文句子，不是全部内容。

FAQ 定义了模型检查的范围：

"This qualifying text includes only prose sentences, meaning that we only analyze blocks of text that are written in standard grammatical sentences and do not include other types of writing such as lists, bullet points (short non-sentence structures), or other non-sentence structures."

下一句："This means that a document containing several different writing types would result in a disparity between the percentage and the highlights."

你看到的百分比不是整个提交的百分比。它只是符合条件的散文文本的百分比。如果你的文档 50% 是公式、20% 是项目符号、30% 是散文，AI 分只反映那 30%。这道差在报告页面上长什么样，见怎么读一份 Turnitin AI 检测报告。

FAQ 对非散文内容说得很直接：

"The model does not reliably detect AI-generated text in the form of non-prose, or code, nor does it detect short-form/unconventional writing such as bullet points (short non-sentence structures)."

FAQ 还声明："In addition, we are not pursuing ChatGPT code detection at this time."

这意味着代码块，不管来源如何，都不被分析是否 AI 生成。检测器只评估周围的散文。改写工具也得守同一条边界：改写工具会把引用、表格和公式改成什么样。

一篇 Turnitin 帮助文章提供了模型不能可靠检测的内容类型的更完整列表：

"The model does not reliably detect AI-generated text in the form of non-prose, such as poetry, scripts, or code, nor does it detect short-form/unconventional writing such as bullet points, tables, or annotated bibliographies."

下一句："This means that a document containing several different writing types would result in a disparity between the percentage and the highlights."

这份列表来自一篇帮助文章，不是 FAQ。如果你的作业包含诗歌、剧本式对话或注释书目条目，那些部分可能根本不被分析。

2023 年 8 月的 release note 描述了更新：

"We are now able to process long-form prose text in tables."

下一句："Resubmit to reprocess existing submissions that contain tables."

同一 release note 还说："Bibliographies are now excluded when processing the AI writing report." 下一句同样要求重新提交已有提交才能生效。

这意味着包含长文散文句子的表格现在会被处理，但表格中的原始数据和短标签仍是非散文。参考书目在 AI 检测处理中被完全排除——所以Turnitin 看起来把参考文献标红了基本上都另有原因。

检测模型通过把符合条件的散文切成重叠片段来处理：

"When a paper is submitted to Turnitin, sentences from the submission are extracted and segmented into overlapping sections for prediction analysis. Each segment is classified by the AI detection model and given a value between 0 and 1, denoting the probability of the text being likely human or AI-generated."

只有符合条件的散文句子被提取和切分。非散文内容不包含在此过程中。文档级百分比只从符合条件的散文片段计算。

总结一下我们讲的内容：

• AI 检测器只分析用标准语法句子写的符合条件的散文句子。
• 代码、项目符号、列表和非句子结构不被分析。
• FAQ 说 Turnitin 不追求代码检测。
• 一篇帮助文章列出诗歌、剧本和注释书目为不可靠检测。
• 包含长文散文的表格现在会被处理，但原始数据和标签不会。
• 参考书目在 AI 检测处理中被排除。
• 百分比只反映符合条件的散文，不是整个提交。

如果收到 Turnitin AI 报告并想处理被标记的段落，可以导入报告处理。符合条件时可以免费继续降 AI。