STRONG AND WEAK METHODS. “AI problem solving methods divides into two distinct categories: weak and strong. A strong method is one that contains a significant amount of task specific knowledge in order to solve it. In contrast, a weak method requires little or no knowledge about a task. As the name implies, strong methods are more powerful algorithms than weak methods.”
http://scholar.google.es/scholar_url?url=http://citeseerx.ist.psu.edu/viewdoc/download%3Fdoi%3D10.1.1.15.5594%26rep%3Drep1%26type%3Dpdf&hl=en&sa=X&scisig=AAGBfm0J-z_xL5_kjwEhLP0aVOrhbAtTfA&nossl=1&oi=scholarr&ved=0ahUKEwi3wpKxxs_MAhXG2B4KHXRODt0QgAMICigBMAA