It seems that most journals no longer do any serious copy-editing, and the standard of English is falling. Today I was reading an article from the European Journal of Operational Research, which is supposedly a good OR journal (current impact factor over 2). Take this for an example from the first page of this paper: If the learned patterns are unstable, the learning tools would produce inconsistent concepts. To overcome this difficult situation, we employed artificial neural networks (ANNs, NNs) for helping the learning …