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Table 2 Parsimony scores on the clustering tree of 23 open ocean samples belonging to 4 groups (Sargasso Sea, Caribbean Sea, Eastern Tropical Pacific and Tropical South Pacific) obtained by sequence signature methods using different dissimilarity measures based on the open ocean metagenomics data

From: Comparison of metagenomic samples using sequence signatures

k

2

3

4

5

6

7

8

9

10

d 2

6

6

6

7

7

7

7

7

6

d2S|M0

5

6

5

4

4

4

4

4

5

d2S|M1

11

6

5

6

5

5

6

5

4

d2S|M2

NA

8

4

6

5

5

5

5

5

d2S|M3

NA

NA

5

6

6

5

6

5

5

d2*|M0

5

5

4

4

6

6

6

7

7

d2*|M1

9

7

7

5

6

6

6

7

7

d2*|M2

NA

8

7

5

5

5

7

6

7

d2*|M3

NA

NA

6

5

5

5

7

7

6

Ma

6

5

5

5

5

4

4

5

4

Eu

6

6

5

6

8

7

7

7

7

Ch

7

7

8

9

9

7

7

6

6

Hao

NA

5

6

6

6

6

4

5

6

Willner

7

6

5

      
  1. The “Mi” indicates that the expected counts are calculated based on i-th order Markov model for the background sequences. Monte Carlo p- values were estimated by comparing observed parsimony score to the scores in 10000 random joined trees: parsimony score = 4--6, p < 0.001; score = 7, p = 0.004; score = 8; p = 0.003; score = 9; p = 0.12. Boldfaced are the two lowest parsimony scores.