IS1825 Multimedia Development for Internet Applications Lecture 06: Big data and the Internet of Things Rob Gleasure

IS1825 Today’s session  Introduction to big data  The 3 V’s of big data  The Internet of Things

Big data The idea is that the vast amounts of interaction data allow for systems that are nuanced and responsive in ways that were previously not possible Also a realisation that, if it can be analysed, this data is a huge commodity, meaning new business models are possible So when is data ‘big data’

3 Vs of Big data Volume  Facebook generates 10TB of new data daily, Twitter 7TB  A Boeing 737 generates 240 terabytes of flight data during a flight from one side of the US to the other We can use all of this data to tell us something, if we know the right questions to ask

3 Vs of Big data From Traditional ApproachBig Data Approach Analyze small subsets of data Analyze all data Analyzed informatio n All available information All available information analyzed

3 Vs of Big data Velocity  Clickstreams and asynchronous data transfer can capture what millions of users are doing right now Think back to AirBnB – make a change, then watch the response. No guesswork required up front as to what to gather, we can induce the interesting stuff as we see it

3 Vs of Big data From Start with hypothesis and test against selected data Explore all data and identify correlations HypothesisQuestion Data Answer Exploration Correlation Insight Traditional ApproachBig Data Approach Data

3 Vs of Big data Variety  Move from structured data to unstructured data, including image recognition, text mining, etc.  Gathered from users, applications, systems, sensors Increasingly comprehensive data view of our ecosystem  The Internet of Things

The Internet of Things From

The Internet of Things RFID sensors, bluetooth, microprocessors, wifi all becoming easier to embed in ‘dumb’ devices Move to mobile also means more data streaming from us at all times, e.g. location, call activity, net use

The Internet of Things Smart homes/smart cities  Temperature, lighting, food stocks, energy, security Smart cars  Diagnostics, traffic suggestions, sensors, self-driving Smart healthcare  Worn and intravenous computing detects issues early and monitors care outcomes remotely Smart factories, farms  Machines coordinated efficiently, linked dynamically to consumption models

Big data Success stories  Books Barnes and Noble: Discovered that readers often quit nonfiction books less than halfway through. Introduced highly successful new series of short books on topical themes Amazon: originally used a panel of expert reviewers for books. Data surplus allowed them to create increasingly predictive recommendations. Panel has since been disbanded and 1/3 of sales are now driven by the recommender system

Big data and the Internet of Things Success stories (continued)  Transport Flyontime.us: used historical weather and flight delay information to predict likelihood of flights get delayed Farecast: looked at ticket prices for specific flights based on historical data, then advised users to buy or wait according to predicted fare costing trajectory UPS: Uses a range of traffic data to calculate most efficient time/fuel efficient routes according to complex algorithm

Big data and the Internet of Things Famous success stories (continued)  Healthcare  Modernizing Medicine EMA dermatology system

Big data and the Internet of Things Famous success stories (continued)  Social media Google (data for information relevance) Twitter (c.f. #RescuePH) Facebook (social data)

Issues with big data Google Flu Trends  Life imitating data, imitating life? No one is really average height Your Xbox knows you like that Katy Perry song Also, Target called to say your teenage daughter is pregnant. Icecream sales and shark attacks…

From Icecream sales and shark attacks continued (correlation, not causation)

Target’s family monitoring continued

Readings Mayer-Schönberger, V. and Cukier, K. (2014). Big Data: A Revolution That Will Transform How We Live, Work, and Think, John Murray Publishers, UK. find-disaster-victims