Uprava titulku, ext. abstrakt

[pan13-paper.git] / pan13-paper / extended-abstract.txt

diff --git a/pan13-paper/extended-abstract.txt b/pan13-paper/extended-abstract.txt
new file mode 100644 (file)
index 0000000..53290e5
--- /dev/null
+++ b/pan13-paper/extended-abstract.txt
@@ -0,0 +1,22 @@
+This paper describes our approaches for the Plagiarism Detection task
+of PAN 2013.
+
+We present modified three-way search methodology for source retrieval subtask.
+TODO Neco podrobnejsiho.
+
+For the text alignment subtask, we use the similar approach as in PAN 2012.
+We detect common features of various types between the suspicious and source
+documents. We have experimented with more types of features. The best
+results had the combination of sorted word 4-grams with unsorted stop-word
+8-grams. From the common features we compute valid intervals, which map
+passages from the suspicious document to the passages of the source document,
+such that these passages are covered ``densely enough'' with corresponding
+common features. For PAN 2013, we have modified the postprocessing phase:
+the fact that the algorithm had access to the whole corpus of source and
+suspicious documents at once allowed us to process the documents in one
+batch and to perform a global post-processing, handling the overlapping
+detections not only between the given suspicious and source document,
+but also between all the detections from a given suspicious document.
+The modifications brought a significant improvement compared to PAN 2013
+on a training corpus, and the results from the competition corpus
+are similar enough to claim that these improvements are usable in general.