Entry Name: UBA-KowalPoblete-MC2

VAST Challenge 2015
Mini-Challenge 2

Team Members:

Adrian Kowal, Universidad de Buenos Aires, Adrian_kowal@hotmail.com

Guillermo Poblete, Universidad de Buenos Aires, guillermo.facundo.poblete@gmail.com, PRIMARY

Student Team: YES

Did you use data from both mini-challenges? YES

Analytic Tools Used:

Tableau

Approximately how many hours were spent working on this submission in total?

50 hours

May we post your submission in the Visual Analytics Benchmark Repository after VAST Challenge 2015 is complete? YES

Video Download

Video:

https://youtu.be/WzGZi0lh79Y

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Questions

MC2.1 – Identify those IDs that stand out for their large volumes of communication. For each of these IDs

a. Characterize the communication patterns you see.

b. Based on these patterns, what do you hypothesize about these IDs?

There are 2 ids that stand out for their large volumes of communication: 1278894 and 839736.

On the image above you can see that the id 1278894 transmits messages each five minutes along the hours 12, 14, 16, 18 and 20 (the three days) and the messages that it receives have a similar behavior and come from the same people that receive them.

We suppose that this is a kind of automatic service message, that use a fixed device (it doesn´t move around the park).

On the other hand, the id 839736 has a different behavior. On Sunday the 8^th at 11.00, it transmits and receives a huge amount of messages (much more than at any other moment on that weekend).

The 839736 is the most frequent destiny for the employee´s communications. They also communicates with the id 12788894 and with “externals” destination with less frequency.

MC2.2 – Describe up to 10 communications patterns in the data. Characterize who is communicating, with whom, when and where. If you have more than 10 patterns to report, please prioritize those patterns that are most likely to relate to the crime.

Pattern 1: Communications to an external source

Here you can see a change on the usual amount of communications to the outside of the park, on Sunday at 12.00, compared with the rest of the time on these weekend.

We can deduce that people is possibly communicating the crime that have just occurred on the Creighton Pavilion.

On the image below, you can see a map of the people´s positions when they transmit messages from 11.00 to 12.00, on Sunday the 8^th.

A big amount of that messages are sent from the Pavilion, as you can see on the hotspot placed there.

Pattern 2: Communications from/to id 839736

There is a main burst of communications to/from the id 839736 starting at 12.00 on Sunday the 8^th, and a smaller one between 14.30 and 15.00.

The first burst comes mainly from Creighton Pavilion just after it was closed.

We thinks this activity corresponds to a late reaction of the park’s employees to the discovery of the crime by the visitor at 11.30 on Sunday.

The second burst of communications, the smaller one, comes from the entry of the Stage, where Scott should have done his show. The people assist to that place, but we suppose that the show had already been cancelled, and the people weren´t informed about that. You can appreciate this reasoning on the image below.

Pattern 3: Communications of the park´s employees after the crime

Here you can see the amount of communications made by park´s employees. This messages are made mainly from and to the id 839736 (orange). It is a change on the communication´s pattern, produced just after the crime.

On the image below, we can confirm that a lot of that communication shown on the image above comes from the Creighton Pavilion.

Patter 4: Communications from visitors inside the park to other visitor who are also into the park.

The big amount of communications between 11.30 and 11.45 includes all the communications inside Wet Land Area, except for those to an external source, the message from and to IDs 839736 and 1278894. In other words, this are the communications between visitors inside the park, just after the Creighton Pavilion re-opens.

We suppose this is the time of the crime´s discovery made by the visitor, according to the news.

On the image below, we can confirm that a lot of that communication shown on the image above comes from the Creighton Pavilion.

Pattern 5: Communications from Creighton Pavilion to external sources.

This bust represents the communications from the Wet Land Area to an external Source.

They are made just after the moment, we supposed, the crime was discovered. We assume that this pattern describes a social behavior similar to the occurred when people report and incident on Twitter. People needs to spread the news that something unusual have just happened.

On the image below, we can confirm that a lot of that communication shown on the image above comes from the Creighton Pavilion.

MC2.3 – From this data, can you hypothesize when the crime was discovered? Describe your rationale.

Using the patterns shown in the MC2.2, we can disintegrate the communications made between 11.00 and 12.00 on Sunday the 8^th. In Pattern 4 you can see the beginning of the burst of communications, coming from some visitor to other visitors inside the park.

From the everyday experience, we know that the first reaction after witnessing a shocking event is to communicate that to the nearest known people. And this behavior starts at 11.30 on Sunday the 8^th, just after the pavilion was reopened. So we consider that moment, 11.30 on Sunday the 8^th, as the exact moment of the crime´s discovery made by the visitors.

On the image bellow, you can see some of the patterns shown above, all together.

All this activities comes mainly from Creighton Pavilion, and reinforce our theory about the moment when the crime was discovered.