Deteksi Plagiat Melalui Internet
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Tipe Plagiat
Sources Not Cited
- "The Ghost Writer" - The writer turns in another's work, word-for-word, as his or her own.
- "The Photocopy" - The writer copies significant portions of text straight from a single source, without alteration.
- "The Potluck Paper" - The writer tries to disguise plagiarism by copying from several different sources, tweaking the sentences to make them fit together while retaining most of the original phrasing.
- "The Poor Disguise" - Although the writer has retained the essential content of the source, he or she has altered the paper's appearance slightly by changing key words and phrases.
- "The Labor of Laziness" - The writer takes the time to paraphrase most of the paper from other sources and make it all fit together, instead of spending the same effort on original work.
- "The Self-Stealer" - The writer "borrows" generously from his or her previous work, violating policies concerning the expectation of originality adopted by most academic institutions.
Sources Cited (But Still Plagiarized)
- "The Forgotten Footnote" - The writer mentions an author's name for a source, but neglects to include specific information on the location of the material referenced. This often masks other forms of plagiarism by obscuring source locations.
- "The Misinformer" - The writer provides inaccurate information regarding the sources, making it impossible to find them.
- "The Too-Perfect Paraphrase" - The writer properly cites a source, but neglects to put in quotation marks text that has been copied word-for-word, or close to it. Although attributing the basic ideas to the source, the writer is falsely claiming original presentation and interpretation of the information.
- "The Resourceful Citer" - The writer properly cites all sources, paraphrasing and using quotations appropriately. The catch? The paper contains almost no original work! It is sometimes difficult to spot this form of plagiarism because it looks like any other well-researched document.
- "The Perfect Crime" - Well, we all know it doesn't exist. In this case, the writer properly quotes and cites sources in some places, but goes on to paraphrase other arguments from those sources without citation. This way, the writer tries to pass off the paraphrased material as his or her own analysis of the cited material.
Teknik Deteksi Plagiat
| Factor | Description and alternatives |
|---|---|
| Scope of search | In the public internet, using search engines / Institutional databases / Local, system-specific database. |
| Analysis time | Delay between the time a document is submitted and the time when results are made available. |
| Document capacity / Batch processing | Number of documents the system can process per unit of time. |
| Check intensity | How often and for which types of document fragments (paragraphs, sentences, fixed-length word sequences) does the system query external resources, such as search engines. |
| Comparison algorithm type | The algorithms that define the way the system uses to compare documents against each other. |
| Precision and Recall | Number of documents correctly flagged as plagiarized compared to the total number of flagged documents, and to the total number of documents that were actually plagiarized. High precision means that few false positives were found, and high recall means that few false negatives were left undetected. |
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Referensi
http://en.wikipedia.org/wiki/Plagiarism_detection - Plagiarism detection versi Wikipedia