d(x2), x)) de xe), x(3) Problem 2. Consider the following document-term dataset: (Barcelona) x(2) (Chelsea) A A2 A3 A As A6 A7 68 g All rights 6. ng All right As A9 57 4 11 87 A10 A1l 10 42 aKeng Alts (Daredevil) 79 8. 19 x(4) (Harry Potter) 3 34 11 29 5 1 1 (Hawkeye) x(6) (Juventus) x(7) (Liverpool) x(8) (Man of Steel) Yiu Ken tra 1 20 121 10 20 38 8. VYu Kenng Wa Yiu Ken 59 20 4 10 1 15 4 4. 87 8. 10 War-Yiu Ke 31 64 58 4. *(9) (Titans) 3 23 2 28 56 3. x(10) (Twilight) 4 3 14 22 4 wherein each row represents a document x) represents the number of times the j-th term appears in the document; the physical meaning of each A,'s are: 128 2 10 26 10 a certain page on Wikipedia; and each column A, ghts A7 A6 the aids of Octave, compute the dissimilarity matrix A1 A2 A4 A5 player profession kick home win release future season A3 Copy As (a) Ag A10 | Au crime [d(x, x) d(x), x@)) d(x@),x) ghts ro run Copyright d Co Copigh d(x, y) = ||x – y l2 being the Euclidean distance. D = (1)X)P d(x(2), x(10) La(x(10), x() d(x(10), x(2) d(x{10), x(3) (b) With regards to (a), which two documents are most similar to each other? uts resedCo Capture Keu All (c) Go to the Wikipedia page of your favourite Football club or TV drama. (A1,..., A10) with respects the above settings. Which of the above is most similar to p? Kang righta resed Copyright All hyWatY operi w.Copyright C opyrighe ght All n All rig Kem All ight Copyright Copyright

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Data Dictionary

A database management system has an entity-relationship diagram, data dictionary, and data model as some of its key components, which are tools for the users who are managing the database. One of them is the data dictionary. The data dictionary can also be called metadata. By definition, metadata is a generic concept in the world of information and technology. An example of metadata could be meta-information about a media file or an image file, like author, location, last updated, size, etc. The contents of a data dictionary are names, attributes, and properties of main data elements which are captured during an experiment or stored in an information system, for example, databases. We can also call it a central repository of information about the main data.