README.md

Open Data Analysis

Please read README.txt in each directory to find the instruction to run the source code. Below is the brief description of each directory:

download

• Download datasets in JSON format. (Shell script)

schema_similarity

• Compute the similarity between schemata. (Python)

matrix_heatmap

• (Figure 8) Generate matrix heatmap using schema similarity scores. (Java Script)

metadata

• Retrieve metadata including tags, schema, description using Socrata APIs. (Python)

tagcloud

• (Figure 5) Generate tag cloud using tags associated with the dataset. (R)
• Require result from metadata

type_detection

• Detect attribute type (Python)

barchart (Require result from type_detection)

• (Figure 9) Generate a barchart of data type ratio across cities. (Python)

extract_zipcode_latlon

• Read result from type_detection and extract all lat/lon, zipcode values. (Python)
• Require result from type_detection

latlon_to_zipcode

• Convert lat/long to zipcode. (C++)

heatmap

• (Figure 12) Generate a heat map of geographical coverage based on zip code values in NYC and Chicago. (Python)
• Require result from extract_zipcode_latlon and latlon_to_zipcode