filter.r modified to cast corpus into lower caseto conform to stopword list
filter.r modified to cast corpus into lower caseto conform to stopword list

XSEDEScienceGateways/textgateway,wrathematics/TAG,XSEDEScienceGateways/TAG,wrathematics/TAG,XSEDEScienceGateways/textgateway,XSEDEScienceGateways/TAG,wrathematics/TAG,XSEDEScienceGateways/textgateway,XSEDEScienceGateways/TAG