GraphConnect Europe 2017 Schedule Graph

Yey! It’s that time of the year again! We are full-steam getting ready for the Bi-Yearly Festival of Graphs also known as GraphConnect. There’s another great conference lined up for us. The entire Neo4j crew will be there in full force - and of course we had to create another Schedule graph - just for fun.

A Google Sheet as the main repository

I had to of course start from the schedule on the GraphConnect website, and convert that into a google sheet with all the data. Once I had that, I could add the data pretty easily with this model:

Very simple - but it’s so much nicer when you can make it interactive and load it into Neo4j. Let’s do that. Let’s load that data into this graphgist.

//add the speakers and companies
load csv with headers from
"https://docs.google.com/a/neotechnology.com/spreadsheets/d/1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps/export?format=csv&id=1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps&gid=1504480307" as csv
merge (p:Person {name: csv.name, title: csv.title, bio: csv.bio})
merge (c:Company {name: csv.company})
with csv
match (p:Person {name: csv.name, title: csv.title, bio: csv.bio}), (c:Company {name: csv.company})
merge (p)-[:WORKS_FOR]->(c);

//add the rooms, tracks, floors
load csv with headers from "https://docs.google.com/a/neotechnology.com/spreadsheets/d/1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps/export?format=csv&id=1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps&gid=284108" as csv
merge (f:Floor {name: csv.floor})
merge (r:Room {name: csv.room})-[:LOCATED_ON]->(f)
merge (t:Track {name: csv.track});


//add the timeslots to each day
load csv with headers from "https://docs.google.com/a/neotechnology.com/spreadsheets/d/1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps/export?format=csv&id=1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps&gid=284108" as csv
merge (t1:Time {time: toInt(csv.start)})
merge (t2:Time {time: toInt(csv.end)});

//Connecting the timeslots
match (t:Time)
with t
order by t.time ASC
with collect(t) as times
  foreach (i in range(0,length(times)-2) |
    foreach (t1 in [times[i]] |
      foreach (t2 in [times[i+1]] |
        merge (t1)-[:FOLLOWED_BY]->(t2))));

//add the sessions and connect them up
load csv with headers from "https://docs.google.com/a/neotechnology.com/spreadsheets/d/1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps/export?format=csv&id=1Hu4l5cfnn6efsAvjNq0DmUyW1K5EiyDd7jpo3Ei3Mps&gid=284108" as csv
match (t2:Time {time: toInt(csv.end)}),
(t1:Time {time: toInt(csv.start)}),
(r:Room {name: csv.room}),
(t:Track {name: csv.track}),
(p:Person {name: csv.speaker})
merge (s:Session {title: csv.title})
set s.abstract = csv.abstract
set s.tags = csv.tags
merge (s)<-[:SPEAKS_IN]-(p)
merge (s)-[:IN_ROOM]->(r)
merge (s)-[:STARTS_AT]->(t1)
merge (s)-[:ENDS_AT]->(t2)
merge (s)-[:IN_TRACK]->(t);

//extract the tags
match (s:Session)
with s, [t in split(s.tags,",") | trim(t)] as tags
unwind tags as tag
merge (t:Tag {name: tag})
merge (s)-[:TAGGED_AS]->(t)
remove s.tags;

Let’s take a look at what we have now:

Ok - so that looks like a big fat hairball. Not very useful. So let’s try to zoom in a bit, and run a simple query over our graph: let’s find a couple of sessions in Day 1:

match (t:Time)<--(s:Session)--(connections)
return t,s,connections
limit 50

and here’s a sample of the graph:

Let’s do another query:

match path = allshortestpaths( (p1:Person)-[*]-(p2:Person) )
where p1.name contains "Morgner"
and p2.name contains "Webber"
return path

and display the result

Let’s now look at a link between a person (Jim Webber, of Neo fame) and an Organisation (The Guardian.

match (c:Company {name:"The Guardian"}), (p:Person {name:"Jim Webber"}),
path = allshortestpaths( (c)-[*]-(p) )
return path

and again diplay the result:

Last one for fun: let’s look at the sessions that have more than one speaker:

match (s:Session)-[r:SPEAKS_IN]-(p:Person)
with s, collect(p) as person, count(p) as count
where count > 1
return s,person

and display it:

Just a start…

There are so many other things that we could look at. Use the console below to explore if you are interested in more.

I hope this gist was interesting for you, and that we will see each other soon.

This gist was created by Rik Van Bruggen

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GraphGists

GraphConnect Europe 2017 Schedule Graph

A Google Sheet as the main repository

Just a start…​

Just a start…