I didn't know it until I graduated -- the principle of HowNet duplication check and examples of weight reduction

Hey, everyone, good duck ！ I'm a panda

Although I have graduated , But I can still remember the days when I was firmly controlled by my graduation thesis , Anyway, I'm free , I went to slip around the corner ~ ~ ~

Now colleges and universities adopt the detection system for master's and doctoral dissertations , It was developed by HowNet . But the specific algorithm of the software , Judging standard , I didn't know before ,

This article was obtained from the internal staff of HowNet , The algorithm of HowNet anti plagiarism detection system is revealed , How to judge whether a paper is plagiarized , And how to modify the secret script to pass . Send it out to benefit everyone .

Let's collect it for ourselves Okay? ？

quote ：

1、 Requirements for format

The degree thesis of HowNet is detected as the whole article upload , The format may affect the test results , The final submission format needs to be submitted for testing , Minimize the impact , This effect may not be detected for small segments of dozens of words . Will not affect the passage . The algorithm of the system is complex , Every time the paper is revised and retested, there may be a small piece of plagiarism that is not detected for the first time （ the 2 Years of practical experience has proved , This paragraph will not exceed 200 word , And the second repair
The plagiarism rate of the modified papers will generally be greatly reduced ）

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2、 Comparison Library

The comparison library is ： General library of Chinese Academic Journals Online Publishing , China doctoral dissertation full text database / China excellent master's thesis full text database , Full text database of papers of important conferences in China , Full text database of important Chinese newspapers , China patent full text database , Personal comparison Library , Other comparison Libraries , Some books are not in HowNet , Plagiarism cannot be detected . The HowNet library is the national designated paper detection comparison Library , The state designates the University thesis detection system as the HowNet degree thesis detection system , This system is the best at present 、 The most extensive official detection system , All colleges and universities are knowledge network detection systems , This is implemented by the Ministry of education in consideration of the fairness of national academic misconduct .

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3、 The results of segmentation and subchapter

After uploading the paper , The system will automatically detect the chapter information of the paper , If the directory setting of your school meets the chapter judgment conditions built in the HowNet system , The system will detect according to the chapter , Chapter by chapter , Otherwise, the results will be segmented . About subsection or subchapter, it mainly involves 4 Threshold in . Integrity paper reminder , Whether it is sub chapter or sub paragraph , Just keep consistent with the school .

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4、 Can the quoted be detected ？

Some students asked ：“ I clearly quoted other people's paragraphs or sentences , Why it's not detected ？” Some students also asked ：“ My quotation is marked with the source , Why is it plagiarism ？” First , Is quotation plagiarism , It has nothing to do with the marked source , Can references be detected , It has nothing to do with the accuracy of the system . All these depend on the threshold of the system . CNKI has set a threshold for the sensitivity of the detection system , The The threshold is 3%, In paragraphs （ Or chapter ） To calculate the number of words , A single document is lower than 3% The plagiarism or citation of is undetectable , This situation is common in small sentences or concepts in large paragraphs .
for instance ： If you test a paragraph 1（ Chapter one ） Yes 10000 word , Then quote A The literature 300 word （10000 multiply 3%=300） within , It's not going to be detected . If quoted B Literature exceeds 300 word , that B Plagiarism in the first chapter of the literature will be marked in red , No matter where in the first chapter , Even break into sentences , Just over 20 The words will be marked .① In fact, here is a way to modify it , That is, plagiarize paragraphs, never choose an article to quote , Select as many documents as possible , Take a few sentences from one article , It won't be detected .② Some students asked why the quotation is also plagiarism , This is mainly because of the threshold of HowNet , higher than 3% The unification of is plagiarism , That is to say, the critical point of quoting plagiarism is 3% Between . Once you exceed the standard , Even if you mark the quotation, it won't help . So please pay attention . Let's give an example of ： The first chapter of a paper has 5000 word , Then in the first chapter , We can only quote A The literature 150 Words below , Otherwise, it will be regarded as plagiarism by the system . Chapter two 4000 word , Then we can only quote A The literature 120 Words below , Otherwise, it will be regarded as plagiarism by the system . The third chapter 8000 word , Chapter four 7000 word , Respectively 240 Below words and 210 Words below , And so on .
in summary , The calculation method of quotation exceeding the standard is to calculate by chapter , This is the same as plagiarism .

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5、 How can the system plagiarize a sentence ？

How can plagiarism of a paper be detected ？ The condition of HowNet paper detection is 20 The similarity or plagiarism above the character unit will be marked by the red letter , But it has to meet 4 The premise inside ： What you quote or plagiarize A The sum of the literature text is in your various detection paragraphs （ Each chapter ） In order to achieve 3%.

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6、 Modification of plagiarism

In addition to 3 In addition to , also Change words 、 Sentence change 、 Change the description （ Change the original sentence into inverted sentence 、 Passive sentence 、 Active sentences, etc ）、 Disorganize paragraphs 、 Delete key words 、 Key sentences, etc . It has been proved by practice that , Use the above methods in combination with , It can effectively reduce the replication ratio , Ensure the smooth passage of .

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On the whole , We need to ensure the smoothness of the revised sentence , Try to be different from the original sentence literally .

example 1： For example, the following sentence ：

There is a difference between overheating in overheating fault and heating under normal operation of transformer , The heat source during normal operation comes from the winding and iron core , Namely copper loss and iron loss , The overheating fault of transformer is the accelerated deterioration of insulation caused by effective thermal stress , It has a medium level of energy density .

Almost marked red , It shows that there is overlap and high similarity with similar literature , Through the combination of the above methods , This sentence can be changed to ：

Overheating in overheating fault is easy to be confused with heating under normal operation of transformer , The latter is due to the copper loss and iron loss of its windings and iron cores , This is the heating during normal operation , The overheating fault of transformer is the accelerated deterioration of insulation caused by effective thermal stress …

① In this case 300 Word is a rough value , Not a critical value . The lower the number of references , The less likely it is to be detected .

② Updated CNKI The academic misconduct detection system has adjusted this threshold to 3%, It used to be 5%, It means that the detection system has stricter requirements for reference , But it is not very difficult to use the method we mentioned later . Have a medium level of capability density .

This modification can reduce the plagiarism rate by almost half .

example 2： Look at the following example sentence ：

Put a small amount of fiber into the clear water of the transparent water cup to stir , It can be intuitively found that the fibers are dispersed in a three-dimensional suspension , And it won't change much after being placed for a long time , It shows that the quality of synthetic fiber is better ; Poor quality fibers may disperse after agitation , But after a short time, it will float up into a flocculent layer . Poor quality fibers are not easy to be evenly dispersed in the actual preparation of concrete .

This paragraph is completely marked red , There is only one way to modify , Is to disrupt the order , Reorganize .

Put a small amount of fiber into a transparent container containing water , Observe the fiber changes while stirring , If the quality of synthetic fiber is better , Then you can intuitively see that the fibers are dispersed in a three-dimensional suspension , as time goes on , The position will not change significantly ; If the quality of synthetic fiber is poor , In the process of stirring , Fibers may disperse , And it is easy to float up to form a flocculent layer . Poor quality fibers are not easy to be evenly dispersed in the actual preparation of concrete .

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I think back to those years when I painfully changed my thesis in school , It's really painful … It's really hard to get an idea to graduate smoothly …

I'm a panda , I hope this article will help you , I'll see you in the next article (*◡‿◡)