I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely, in your thoughts, advanced to the stage of science, whatever the matter may be. --William Thomson, 1st Baron Kelvin. Lecture on "Electrical Units of Measurement", Six Lectures on "The Practical Applications of Electricity.", Institution of Civil Engineers, May 3, 1883.
Machine Translation Quality Evaluation and Estimation; Machine Translation; Semantic Analysis of Text; Multilingual Natural Language Processing, Text and Data Mining; Machine Learning and Artificial Intelligence.
