Chapter 2: Concept of data quality

When I firstly decided to write about the concept of data quality for search
engine I did not mean at the beginning that data has to be perfect. I just meant that
when I write a request on any search engine I expect to have as results some
answers which fit to my expectations. The last example I have in mind is when on
the 31th of December a friend of mine looked for the « average height of Korean
people » (request were made on Google) and all the results on the page were dealing
about the « average size of the sexual organs of Korean people ». I have high doubts
that no information regarding the average height of Korean people does not exist on
the web it however has been what Google seemed to tell me.
Here as you can see in this example it raises a lot of issues regarding data
quality. My first expectation regarding data quality was then to get some results
which fit to my request. But looking it deeper what is the value of a supposed correct
answer that I could have found written by someone like you and I (not specialized in
this topic).
In fact here everything depends on how professional the data as been written,
this is what I am explaining in this chapter.