A ( Q ) = ∑ i = 1  t  l o g ( A )  i    = ∑ i = 1  t  l o g ( ∏ k = 1  l  Q k , j    Q b       )     i        ( 4 )    MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaacqWGbbqqcqGGOaakcqWGrbqucqGGPaqkcqGH9aqpdaaeWbqaaGqaciab=XgaSjab=9gaVjab=DgaNjabcIcaOiabdgeabjabcMcaPmaaBaaaleaacqWGPbqAaeqaaaqaaiabdMgaPjabg2da9iabigdaXaqaaiabdsha0bqdcqGHris5aOGaeyypa0ZaaabCaeaacqWFSbaBcqWFVbWBcqWFNbWzdaqadaqaamaarahabaWaaSaaaeaacqWGrbqudaWgaaWcbaGaem4AaSMaeiilaWIaemOAaOgabeaaaOqaaiabdgfarnaaBaaaleaacqWGIbGyaeqaaaaaaeaacqWGRbWAcqGH9aqpcqaIXaqmaeaacqWGSbaBa0Gaey4dIunaaOGaayjkaiaawMcaaaWcbaGaemyAaKMaeyypa0JaeGymaedabaGaemiDaqhaniabggHiLdGcdaWgaaWcbaGaemyAaKgabeaakiaaxMaacaWLjaWaaeWaaeaacqaI0aanaiaawIcacaGLPaaaaaa@629A@