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    Online shopping sites track which products people look at, which ones they add to
                      their basket and which ones they actually buy. Streaming apps remember which

                      songs you play again and again and which ones you skip after five seconds. News
                      websites record which stories are read the most. All of this creates a continuous,
                      never-ending flow of data through the Internet every second.

                       Ethical Minds

                        Everything you do online such as tapping a like button or filling out a school form creates a trail
                        of data, you must be careful about what personal details you share.

                      TYPES OF DATA

                      Not all  data looks  the same  or is stored  in the same  way. Some  data  is neatly
                      arranged and easy to read, while other data is more mixed up and harder to sort.

                      Scientists who work with data usually divide it into two broad groups: structured
                      data and unstructured data.

                      Structured Data

                      Structured data is information arranged in a clear and tidy way,
                      usually in rows and columns, just like a table or a spreadsheet.
                      Each piece of information has its own fixed place, which makes it

                      very easy for a computer to read, sort and search through.

                      Think about your school report card. Each row shows one subject and each column
                      shows a  particular  piece  of information, such  as  marks,  grade  and  teacher’s
                      remarks. The data is neat and predictable. Here are some other familiar examples
                      of structured data:

                       A cricket scoreboard showing runs, wickets and overs for each team.
                       A class timetable showing which subject is taught in each period.

                       A library record showing the name of a book, its author and whether it has been
                         borrowed.

                       A school fee receipt listing the amount paid, the date and the student’s name.

                                                                   Unstructured Data

                                                                   Unstructured  data  does  not follow  a fixed

                                                                   pattern. It comes in many different forms and
                                                                   is much harder for a computer to sort by itself.

                       24        Artificial Intelligence (CT & AI)-V

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