Assignment Task:

Scenario 

You have just started working as a data miner/analyst in the Analytics Unit of a company. The Head of the Analytics Unit has brought you a data set [a welcome present ;-))]. The data set includes two files: a description of the attributes and a table with the actual values of these attributes. The Head of the Analytics Unit has mentioned to you that this is some sort of demographic data that a potential client has provided for analysis. The Head of the Analytics Unit would like to have a report with some insights about that data, that he/she could deliver to the client. Your tasks include: 

  • understanding the specifics of the data set
  • extracting information about each of the attributes, possible associations between them and other specifics of the data set. 

The tasks in the assignment are specified below. 

Data sets 

Each student is assigned an individual dataset with the actual values of the attributes. Please use the file that is linked to your name in this zipped file: Dataset_Assignment2.zip 

The description of the attributes can be found here: Attribute_Description_Assignment2.pdf 

Tasks 

1A. Initial data exploration 

1. Identify the type of all the attributes {BATHRM, HEAT_D, AC, ......., GIS_LAST_MOD_DTTM} (nominal, ordinal, interval or ratio). Please justify why you choose the type.

2. Identify the values of the summarising properties for all the attributes including frequency, location and spread (e.g. value ranges of the attributes, frequency of values, distributions, medians, means, variances, percentiles, etc. - the statistics that have been covered in the lectures and materials given). Note that not all of these summary statistics will make sense for all the attribute types, so use your judgement! Where necessary, use proper visualisations for the corresponding statistics.

3. Using KNIME or other tools, explore your data set and identify any outliers, clusters of similar instances, "interesting" attributes and specific values of those attributes. Note that you may need to 'temporarily' recode attributes to numeric or from numeric to nominal. In the report include the corresponding snapshots from the tools and explanation of what has been identified there. 

Present your findings in the assignment report. 

1B. Data preprocessing 

Perform each of the following data preparation tasks (each task applies to the original data) using your choice of tool: 

1. Use the following binning techniques to smooth the values of the PRICE attribute: 

  • equi-width binning
  • equi-depth binning. 

In the assignment report for each of these techniques you need to illustrate your steps. In your Excel workbook file place the results in separate columns in the corresponding spreadsheet. Use your judgement in choosing the appropriate number of bins - and justify this in the report. 

1. Use the following techniques to normalise the attribute PRICE: 

  • min-max normalization to transform the values onto the range [0.0-1.0].
  • z-score normalization to transform the values. 

In the assignment, the report provide an explanation about each of the applied techniques. In your Excel workbook file place the results in separate columns in the corresponding spreadsheet. 

2. Discretise the AYB attribute into the following categories: Very Old=0-1800; Old=1801-1950; New=1951-2000; Very New=2001 + . Provide the frequency of each category in your data set. 

In the assignment report provide explanation about each of the applied techniques. In your Excel workbook file place the results in a separate column in the corresponding spreadsheet. 

3. Binarise the CNDTN_D variable [with values "0" or "1"]. 

In the assignment report provide explanation about the applied binarisation technique. In your Excel workbook file place the results in separate columns in the corresponding spreadsheet. 

1C. Summary 

At the end of the report include a summary section in which you summarise your findings. The summary is not a narrative of what you have done, but a condensed informative section of what you have found about the data that you should report to the Head of the Analytics Unit. The summary may include the most important findings (specific characteristics (or values) of some attributes, important information about the distributions, some clusters identified visually that you propose to examine, associations found that should be investigated more rigorously, etc.). 

Deliverables and Submission Information 

The deliverables include: 

  • A report, which structure should follow the tasks of the assignment, and
  • An Excel workbook file with individual spreadsheets for each task (spreadsheets should be labeled according to the task names, for example, "1A"). Each of the results of parts (a) through (d) in task 1B should be presented in a separate spreadsheet (and respectively table in the assignment report). 

Report:

In the report include a section (starting with a section title) for each of the tasks in this assignment. 

Your report will likely be between 20-25 pages in length using 11 or 12 point Times or Arial fonts, including title page and graphs. On average you will require between 15 and 23 hours to complete this assignment. 

Use the filename fda_a2_xxxxxx.pdf or fda_a2_xxxxx.doc for the report, where xxxxx is your student id, and fda_a2_xxxxx.xls for the spreadsheet. You may need to zip files to submit to Canvas. 

Assessment 

This assignment is assessed as individual work. The assessment criteria are here: Marking_Criteria_Assignment2.pdf 

Relationship to Objectives 

This assessment task addresses the following subject learning objectives (SLOs): 3, 4, 5 and 6 

This assessment task contributes to the development of the following course intended learning outcomes (CILOs): A.1, B.1, B.2, B.3 and E.1. 

Return of Assignments 

We plan to return marked assignments within 3 weeks of submission. Emails will be sent when marking is complete.

 

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  • Uploaded By : Pearl
  • Posted on : September 15th, 2018

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