Collecting targeted search methods

In chapters 3-5, we suggested that you begin Writing on Your Own by reviewing the targeted section (i.e., Methods, Results, and Discussion) in each of the articles that you collected during your literature search. To prepare to write the Introduction, however, we recommend that you review each article in its entirety, in order to summarize the major findings of each work. 

Due to the fact that the first phase of manipulation of such data is usually a fast scanning of the entire collection, a highly compressed representation of uniformly coded data is essential in order to accelerate the handling. After the search reduces the collection to a smaller group in which the target object is supposed to be, the full (extended) representation of objects can be invoked if necessary for further manipulation. In the next sections we shall discuss the use of two methods, Fast Fourier Transformation (FFT) and Fast Hadamard Transformation (FHT), for the reduction of object representations and show by some examples in 1- and 2-dimensional patterns (spectra, images) how the explained procedures can be used... 

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