1. Digital Enterprise Research Institute www.deri.ie
Google Public Data Explorer
Aftab Iqbal
Stefan.Decker@deri.org
http://www.StefanDecker.org/
Copyright 2010 Digital Enterprise Research Institute. All rights reserved.

2. Introduction
Digital Enterprise Research Institute www.deri.ie
 DSPL consists of :
 XML
 CSV files

3. DSPL Dataset
Digital Enterprise Research Institute www.deri.ie
 General information
 About the dataset
 Concepts
 Definitions of "things" that appear in the dataset (e.g., counties,
unemployment rate, gender, etc.)
 Slices
 Combinations of concepts for which there are data
 Tables
 Data for concepts and slices. Concept tables hold enumerations
and slice tables hold statistical data
 Topics
 Organize the concepts of the dataset in a meaningful hierarchy
through labeling

4. School Enrollment 2009_2010 *
Digital Enterprise Research Institute www.deri.ie
School_Roll_No Short_Name Level Male Female
00697S ST BRIDGIDS NS Primary 377 447
01170G NAUL NS Primary 40 61
09492W BALSCADDEN NS Primary 98 133
… … … … …
* Snapshot took from http://data.fingal.ie/ViewDataSets/Details/default.aspx?datasetID=385

5. DSPL – Contd.
Digital Enterprise Research Institute www.deri.ie
 General Information
 General information about the provider of the dataset
<info>
<name>
<value>School</value>
</name>
<description>
<value>Statistics about Fingal County Schools</value>
</description>
<url>
<value></value>
</url>
</info>
<provider>
<name>
<value>County Fingal School Enrollment Statistics</value>
</name>
<url>
<value>http://data.fingal.ie/ViewDataSets/Details/default.aspx?datasetID=385</value>
</url>
</provider>

6. DSPL – Contd.
Digital Enterprise Research Institute www.deri.ie
 Concepts
 Type of data that appears in a dataset
<concept id="Schools“ extends="geo:location" >
<info> <table id="schools_table">
<name> <column id="School" type="string"/>
<value>Schools</value> <column id=“School_Roll_No" type="string"/>
</name> <column id="latitude" type="float"/>
<description> <column id="longitude" type="float"/>
<value>List of schools for Co. Fingal</value> <data>
</description> <file format="csv" encoding="utf-8">schools.csv</file>
</info> </data>
<type ref="string"/> </table>
<table ref="schools_table"/>
</concept>
school name latitude longitude
00697S Saint Bridgids National School 53.37514 -6.36221
01170G S N Na H Aille Naul National School 53.57887 -6.28564
09492W Balscadden National School 53.61528 -6.23218
09642P Burrow National School 53.39129 -6.10028
… … … …

7. DSPL – Contd.
Digital Enterprise Research Institute www.deri.ie
 Slices
 It’s a combination of concepts for which data exists
 contains two kinds of concept references: Dimensions and
metrics.
<table id="enrolment_slice_table">
<slice id="enrolment_slice"> <column id="school" type="string"/>
<dimension concept="school"/> <column id="M" type="integer"/>
<dimension concept="time:year"/> <column id="F" type="integer"/>
<metric concept="M"/> <column id="year" type="date" format="yyyy"/>
<metric concept="F"/> <data>
<table ref="enrolment_slice_table"/> <file format="csv" encoding="utf-
</slice> 8">school_enrolment_slice.csv</file>
</data>
</table>

8. School Enrollment Slice
Digital Enterprise Research Institute www.deri.ie
Dimensions metrics
School Male Female Year
Saint Bridgids National School 377 447 2009
Saint Bridgids National School 475 392 2010
Balscadden National School 98 133 2009
Balscadden National School 126 102 2010
… … … …

9. DSPL – Contd.
Digital Enterprise Research Institute www.deri.ie
 Topics
 Classify concepts hierarchically, and are used by applications to
help users navigate to your data.
<topic id="Male_indicators">
<info>
<name><value>Male Students Enrollment</value></name>
</info>
</topic>
<topic id="Female_indicators">
<info>
<name><value>Female Students Enrollment</value></name>
</info>
</topic>

10. Data Cleansing
Digital Enterprise Research Institute www.deri.ie
School Enrollment 2009 School Enrollment 2010
School_Roll_No Short_Name Level Male Female School_Roll_No Short_Name Level Male Female
00697S ST BRIDGIDS NS Primary 377 447 00697S ST BRIDGIDS NS Primary 475 392
01170G NAUL NS Primary 40 61 01170G NAUL NS Primary 58 40
… … … … … … … … … …
School Male Female Year
00697S 377 447 2009
00697S 475 392 2010
01170G 40 61 2009
01170G 58 40 2010
… … … …
School_Enrollment_Slice.csv
School Name Latitude Longitude
00697S Saint Bridgids National School 53.37514 -6.36221
01170G S N Na H Aille Naul National School 53.57887 -6.28564
… … … …
Schools.csv

11. Digital Enterprise Research Institute www.deri.ie
<table id="enrolment_slice_table">
<slice id="enrolment_slice"> <column id="school" type="string"/>
<dimension concept="school"/> <column id="Male" type="integer"/>
<dimension concept="time:year"/> <column id="Female" type="integer"/>
<metric concept="Male"/> <column id="year" type="date" format="yyyy"/>
<metric concept="Female"/> <data>
<table ref="enrolment_slice_table"/> <file format="csv" encoding="utf-8">School_Enrollment_Slice.csv</file>
</slice> </data>
</table>
Deployment
Compressed
CSV files metadata