Computer Science 1032A/B Lecture 3: (3) Data Information Notes

• School: Western University
• Department: Computer Science
• Course: Computer Science 1032A/B
• Professor: Louis Magguilli

Document Summary

Data versus information versus knowledge: data, facts or figures that are, collected, recorded, stored, processed. Information: processed data, data that has been organized and processed to be meaningful to a person (or other information system) who (or which) will use it, knowledge, results and conclusions. Inferred from information: using the information derived from data to support conclusions, e. g. Data = hourly wage, information = average wage, knowledge = competitive within your industry. Data is processed into information in two types of activities: computation, creates information by carrying out a predefined process on two or more data items, e. g. Average age of students in cs1032 (give another example: comparison. Here): selects processing steps on the basis of data in an information system, e. g. Comparing the difference between the youngest and oldest student in cs1032 (give another example here): Quality: data quality, dirty data, missing values, data not integrated, * bad data produces bad information regardless of the quality of the.