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Figure 1 | BMC Bioinformatics

Figure 1

From: Gene selection and classification of microarray data using random forest

Figure 1

Out-of-Bag (OOB) vs mtryFactor for the nine microarray data sets. mtryFactor is the multiplicative factor of the default mtry ( n u m b e r o f g e n e s MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciGacaGaaeqabaqabeGadaaakeaadaGcaaqaaiabd6gaUjabdwha1jabd2gaTjabdkgaIjabdwgaLjabdkhaYjabgwSixlabd+gaVjabdAgaMjabgwSixlabdEgaNjabdwgaLjabd6gaUjabdwgaLjabdohaZbWcbeaaaaa@4332@ ); thus, an mtryFactor of 3 means the number of genes tried at each split is 3 * n u m b e r o f g e n e s MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciGacaGaaeqabaqabeGadaaakeaadaGcaaqaaiabd6gaUjabdwha1jabd2gaTjabdkgaIjabdwgaLjabdkhaYjabgwSixlabd+gaVjabdAgaMjabgwSixlabdEgaNjabdwgaLjabd6gaUjabdwgaLjabdohaZbWcbeaaaaa@4332@ ; an mtryFactor = 0 means the number of genes tried was 1; the mtryFactors examined were = {0, 0.05, 0.1, 0.17, 0.25, 0.33, 0.5, 0.75, 0.8, 1, 1.15, 1.33, 1.5, 2, 3, 4, 5, 6, 8, 10, 13}. Results shown for six different ntree = {1000, 2000, 5000, 10000, 20000, 40000}, nodesize = 1.

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