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Revision 2 as of 2017-02-21 13:03:28
AD Teaching Wiki:
  • InformationRetrievalWS1617
  • ExamSolution

TASK 1 (Ranking and evaluation)

1.1 Term-document matrix

1.2 Function for conversion from tf to tf.idf

1.3 Find query with P@2 and AP = 50%

TASK 2 (Encodings)

2.1 Encoding for x = 1, ...,10

2.2 Function for code for x < 16

2.3 Formula for code length for arbitraty x

TASK 3 (Web applications and UTF-8)

3.1 Write HTML

3.2 Write JavaScript

3.3 UTF-8 code for Euro sign

3.4 Function for counting #characters in UTF-8 sequence

TASK 4 (Naive Bayes and k-means)

4.1 Steps of k-means

4.2 Compute centroids from A and P

4.3 Determine w and b of Naive Bayes

4.3 Example such that Naive Bayes decides 2x > y

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