Razorbase Examples Part 4

Razorbase Examples Part 4 (The File System Approach) By Sherman Monroe

Razorbase
A browser for exploring the Linked Open Data cloud using OpenLink Facets API Live demo available at http://www.razorbase.com

File System Metaphor
Objects in a linked database share similar structure with things in a file system

Relationships in a File System File System Metaphor

Relationships in a File System
Two types of objects: Directory and File

One type of relationship: Container

Two directions for relationships:

parent (… is Container of)

parent (… is Container of)
child (… has Container)

Relationships in a File System directory File System Metaphor

Relationships in a File System … is Container of directory directory File System Metaphor

Relationships in a File System … is Container of directory directory directory … is Container of File System Metaphor

Relationships in a File System … is Container of file directory directory directory … is Container of … is Container of File System Metaphor

Relationships in a File System … is Container of file directory directory directory … is Container of … is Container of File System Metaphor has Container

Relationships in a File System … is Container of file directory directory directory … is Container of … is Container of File System Metaphor has Container has Container

Relationships in a File System … is Container of file directory directory directory … is Container of … is Container of File System Metaphor has Container has Container has Container

Relationships in a Linked Database File System Metaphor

Relationships in a Linked Database
Many types of objects: People, Places, Things

Many types of relationships: e.g. Creator

subject (e.g. … is Creator of, … is Influence of)

subject (e.g. … is Creator of, … is Influence of)
object (e.g. … has Creator, … has Influence)

Relationships in a Linked Database Person File System Metaphor

Relationships in a Linked Database … is Friend of Person Person File System Metaphor

Relationships in a Linked Database … is Friend of Web Page Person Person … is Creator of File System Metaphor

Relationships in a Linked Database … is Friend of Discussion Post Web Page Person Person … is Creator of … is Topic of File System Metaphor

Relationships in a Linked Database … is Friend of Discussion Post Web Page Person Person … is Creator of … is Topic of File System Metaphor has Topic

Relationships in a Linked Database … is Friend of Discussion Post Web Page Person Person … is Creator of … is Topic of File System Metaphor has Topic has Creator

Relationships in a Linked Database … is Friend of Discussion Post Web Page Person Person … is Creator of … is Topic of File System Metaphor has Topic has Creator has Friend

So the familiar File System metaphor should be helpful for browsing linked databases

So the familiar File System metaphor should be helpful for browsing linked databases
Let’s see how this approach is used in razorbase to improve exploration

Task 1: Find the Kiwi bird
Let’s lookup the kiwi , a New Zealand bird

In a File System, this would look like …

Each folder has an incoming connection that says something else is a Container of it

Each folder has an outgoing connection that says it is a Container of something else

Each folder has an outgoing connection that says it is a Container of something else
The semantics of the relationship Container are so generic as to allow for virtually anything to be on the other end of the connection

This moves us in the direction of forward ….

… and down the Contains path

In a file system, there is no way to define the specific relationships between the container and its contents

… is a Photo of kiwi

… is a Song about kiwi …

Let’s go up one directory

… but there is no way to say “Go to Songs” from here

But in a linked database, these relationships can be labeled explicitly

Think of these as the specific relationships between the parent folder: kiwi , and its children

Let’s explore Birds named Kiwi

This moves us in the direction of forward

… and along this path type

Let’s keep moving forward from here …

Move forward …

… down this path

It appears there is a new results for birds of the species we’re exploring

Isn’t this new?

To be sure, lets navigate back to our filtered birds list and check

To be sure, lets navigate back to our filtered birds list and check
Use the Back navigate button

Move backward …

… up this path

Indeed, the Anatoma mantelli does not appear here

This is because here, the criteria is that Category be umbel-sc:Birds

This criteria was not specified in the other list of birds

This criteria was not specified in the other list of birds
Let’s view more information about these birds

Next page of results

Now let’s navigate back to that list of birds containing Anatoma mantelli

Then let’s take a look at what Category it’s under

Then let’s take a look at what Category it’s under
This will explain why it isn’t in our current list of umbel-sc:Birds

Let’s scroll page right

These paths are offered for convenience …

… based on the information we’ve viewed about the subject

Also, the subject is now filtered to only birds who have pictures in the database

… which indirectly filters everything else along the paths from this subject

Now let’s add a Category information to the table

We can’t add Category information from the Information Explorer

We can’t add Category information from the Information Explorer
Hint: Add a filter for Category, then unbind the value to view all Categories for each subject

Species should be generic enough as to not filter out our current results

Now let’s unbind the value to see all other Categories for each subject

So, although it shares the same species as the others birds here

… its not classified as umbel-sc:Bird in the linked database

Conclusions
Linked databases share similar structure with file systems

Conclusions
Linked databases share similar structure with file systems
This allows us to build linked data browsers that are more familiar to new users

Now go grow the Linked Data Web!

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Razorbase Examples Part 4

by Sherman Monroe

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