Results for: 00149, Forests
Main parameters
| Parameter | C | C++ | Pascal | Total |
| Number of submissions (AC, WA, or PE) | 171 | 240 | 89 | 500 |
| Number of authors | 36 | 84 | 40 | 160 |
| First submission correct | 7 | 37 | 5 | 49 |
| Last submission correct | 19 | 46 | 9 | 74 |
| Average number of trials per author | 4.75 | 2.86 | 2.23 | 3.13 |
| Average number of trials per author (excluding submissions after a correct one) | 2.81 | 2.25 | 2.11 | 2.35 |
| Average number of trials to correct submission | 2.42 | 1.76 | 1.56 | 1.91 |
| Number of different equivalence classes | 57 | 79 | 38 | 160 |
| Number of different score functions | 51 | 57 | 20 | 115 |
| Number of different equivalence classes in authors' first submissions | 26 | 39 | 19 | 74 |
| Number of different score functions in authors' first submissions | 21 | 33 | 14 | 56 |
Parameters of the C/C++ submissions
| Parameter | All, 1>pfd (N=111) | Correct (N=47) | 0.1>=pfd>0 (N=11) | 1>pfd>0.1 (N=53) | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| FileSize | 3540 | 3740 | 3750 | 4170 | 2090 | 504 | 3650 | 3700 | |
| LOC | 117 | 68.4 | 122 | 79.7 | 91.7 | 24.7 | 118 | 63.1 | |
| #Comment lines | 11.2 | 28.2 | 17.2 | 41.4 | 2.18 | 3.03 | 7.77 | 9.91 | |
| Halstead, Volume | 5220 | 2360 | 5770 | 2890 | 3810 | 1060 | 5030 | 1850 | |
| McCabe, CC | 25.8 | 12.7 | 26.6 | 15.6 | 20.4 | 7.35 | 26.2 | 10.4 | |
Correlations between parameters of correct C/C++ submissions
| # Comment | Halstead | McCabe | |||||||
| Filesize | LOC | lines | Volume | CC | |||||
| FileSize | 1 | 0.841 | 0.952 | 0.797 | 0.684 | ||||
| LOC | 0.841 | 1 | 0.761 | 0.953 | 0.887 | ||||
| #Comment lines | 0.952 | 0.761 | 1 | 0.682 | 0.544 | ||||
| Halstead, Volume | 0.797 | 0.953 | 0.682 | 1 | 0.88 | ||||
| McCabe, CC | 0.684 | 0.887 | 0.544 | 0.88 | 1 | ||||
Correlations between parameters and pfd/defects of C/C++ submissions
| # Comment | Halstead | McCabe | |||||||
| Filesize | LOC | lines | Volume | CC | |||||
| PFD | -0.0184 | 0.00807 | -0.0735 | -0.0576 | 0.0683 | ||||
| Defects | 0.0959 | 0.0815 | -0.0481 | -0.0708 | 0.0694 | ||||
Effect of diversity
 | Average reliability improvement for 0.001<=pfd<=0.01: 23.2 |
Effect of Language diversity
 | Average reliability improvement for 0.001<=pfd<=0.01 (in the range where all exist): C/C: 16.1 C/C++: 35.2 C/Pascal: 32.9 |
 | Average reliability improvement for 0.001<=pfd<=0.01 (in the range where all exist): C++/C: 35.3 C++/C++: 23.8 C++/Pascal: 25.9 |
 | Average reliability improvement for 0.001<=pfd<=0.01 (in the range where all exist): Pascal/C: 32.8 Pascal/C++: 25.9 Pascal/Pascal: 7.97 |
Outliers
The following programs have been excluded for analysis in the sections on parameters of C/C++ submissions, because they consist of a large lookup table: 88939.Page automatically generated on Mon Jan 22 11:40:56 2007