TY - JOUR T1 - The Classes of Left and Right sigmoidal signals for Feed forward Neural Networks AU - , M. Ramakrishnan AU - , C.M. Velu AU - , K. Ekambavanan AU - , P. Thangavelu AU - , P. Vivekanandan JO - International Journal of Soft Computing VL - 1 IS - 2 SP - 118 EP - 120 PY - 2006 DA - 2001/08/19 SN - 1816-9503 DO - ijscomp.2006.118.120 UR - https://makhillpublications.co/view-article.php?doi=ijscomp.2006.118.120 KW - Feed forward networks KW -activation functions KW -sigmoidal signals KW -approximation AB - The authors recently introduced left sigmoidal signals and right sigmoidal signals to prove certain function approximation theorems for Feed Forward Neural Networks. In this study we identify a class LS (resp. RS.) of left sigmoidal (resp.Right sigmoidal) signals having the property that the envelope of the derivatives of members of a class LS (resp. RS) is a left sigmoidal (resp.Right sigmoidal) signal. ER -