Ivan-big-data

• Project title: Relationship between Homicide, Education, Abortion, HIV Incidence, Population and GDP for countries around the globe
• Project data set: United Nations DB (UNdata)

Identifying and downloading the target data set

Data sets can be founded here:

• http://data.un.org/Data.aspx?q=gdp&d=SNAAMA&f=grID%3a101%3bcurrID%3aUSD%3bpcFlag%3a1
• http://data.un.org/Data.aspx?d=UNAIDS&f=inID%3a32
• http://data.un.org/Data.aspx?q=population&d=PopDiv&f=variableID%3a12
• http://data.un.org/Data.aspx?q=abortion&d=GenderStat&f=inID%3a12
• http://data.un.org/Data.aspx?q=education&d=UNESCO&f=series%3aXGOVEXP
• http://data.un.org/Data.aspx?d=UNODC&f=tableCode%3a1

Metadata

• Homicide - rate per 100,000 population

-- Data for 195 countries
-- Min: 0.373944299393987
-- Max: 60.8707260176513

• Education_cost - expenditure on education as % total government expenditure

-- Data for 170 countries
-- Min: 10.13355
-- Max: 53.99897

• Abortion - Abortions per 1,000 women (woman 15-44)

-- Data for 61 countries
-- Min: 0.1
-- Max: 53.7

• Total Population - both sexes combined (thousands)

-- Data for 263 countries
-- Min: 0.146
-- Max: 6895889.018

• GDP - at current prices - US dollars

-- Data for 209 countries
-- Min: 150.617985349753
-- Max: 186174.902651821

Data cleaning and pre-processing

The first obstacle I faced with cleaning and pre-processing was inconsistency in countries naming. For example name China in education and name People's Republic of China in homicide... So when I did full join of country columns I realized that not all of them are in one line (things that are supposed to be in one line). So I changed names and made it unique through all 6 data sets.   

Load the data into your Postgres instance

Data-sets I downloaded were in CSV files.

• Here is an example for inserting data-set homicide into my PQSL:

drop table homicide;
create TABLE homicide (COUNTRY varchar primary key, YEAR int, RATE float);
COPY homicide FROM '/home/postgres/HOMICIDE.csv' DELIMITER ';' CSV;

Develop queries to explore your ideas in the data

• Query to connect all data sets with country as a unique key and to see the overlap (Use full join to see all):

select * from (((gdp inner join education_cost ON (gdp.country = education_cost.country))
inner join population ON (gdp.country = population.country))
inner join homicide ON (gdp.country = homicide.country))
inner join abortion ON (gdp.country = abortion.country)

• This is what I used to export result from PSQL to CSV:

Copy (some_query) to '/home/postgres/something.csv' with CSV;

Develop a visualization to show the model/patterns in the data

Tech Details

• Node: as2
• Path to storage space: /scratch/big-data/ivan

Results

• The visualization(s)
• The story