

Big Data: How Data Analytics Is Transforming the World
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Episodi
S1 E1 - Data Analytics - What's the "Big" Idea?
24 luglio 201437minSample the tremendous scope and power of data analytics, which is transforming science, business, medicine, public policy, and many other spheres of modern life. Investigate why this revolution is happening now, and look at some common misconceptions about data analysis.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E2 - Got Data? What Are You Wondering About?
24 luglio 201432minData analysis is not just for large organizations and large datasets; it's also for the average person. Learn how to put data to work in your own life - from charting your cell phone usage to personalizing your medical care or improving your exercise routine.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E3 - A Mindset for Mastering the Data Deluge
24 luglio 201432minToday's data users often feel like they're drinking from a fire hose of information. Investigate strategies that help manage the data deluge, and learn efficient ways to think about data that separate what's genuinely useful from what can be strategically ignored.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E4 - Looking for Patterns - and Causes
24 luglio 201429minHumans are experts at pattern recognition, which is a key skill in data analysis. But when are patterns real and when are they imagined? Study some surprising correlations between apparently unrelated phenomena, asking whether there is a cause-and-effect relation or mere coincidence is involved.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E5 - Algorithms - Managing Complexity
24 luglio 201431minAlgorithms - rules to follow for solving problems - are the secret of managing huge datasets. Start by looking at simple algorithms, including an amazingly effective sorting procedure that you can perform by hand. Then see how these concepts apply to more complex problems, such as web search engines.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E6 - The Cycle of Data Management
24 luglio 201429minStudy what happens after you gather data. It must first be stored, then organized, integrated with data from other sources, and analyzed. Now you are ready to act on the information that the data provides. Determine how this cycle works in practice, and uncover some hidden pitfalls.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E7 - Getting Graphic and Seeing the Data
24 luglio 201428minGraphics have long been a compelling way to present and understand data. Survey some unusually effective graphics from the pre-computer era. Then explore the wealth of graphical tools available today. Graphics can reveal new information, but they can also obscure it when used poorly.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E8 - Preparing Data Is Training for Success
24 luglio 201430min"Garbage in, garbage out" is a famous expression in computer science, underscoring the importance of starting with reliable data. Learn how data is prepared to remove errors and ambiguities. As an example, see how the US Postal Service perfected machines that can read hastily scribbled addresses.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E9 - How New Statistics Transform Sports
24 luglio 201434minFollow the saga of the 2002 Oakland A's, famously depicted in the book and film Moneyball. Thanks to data analytics, the A's made it to the major league playoffs with a roster of undervalued players. Survey the increasing role of data at all levels of sports competition.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E10 - Political Polls - How Weighted Averaging Wins
24 luglio 201432minStudy the role of big data in predicting election results. Contrast the disastrous 1936 presidential poll by the Literary Digest with today's impressively accurate aggregators of polls, such as statistician Nate Silver. Analyze what makes aggregation more effective than any single poll.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E11 - When Life Is (Almost) Linear - Regression
24 luglio 201431minExplore the power of regression analysis for modeling the past and future, focusing on a technique called the linear least squares method. As an example, use data from Olympic gold medal times for the 100-meter dash. Calculate a theoretical fastest possible time for the event.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E12 - Training Computers to Think like Humans
24 luglio 201431minDelve into the field of artificial intelligence, discovering how computers are programmed to think and make decisions like humans. An automated version of the 20 questions game illustrates how neural networks are the key to machine learning - a technology that is now in widespread use.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E13 - Anomalies and Breaking Trends
24 luglio 201432minSometimes it is the odd bit of data - the outlier in a sea of statistics - that is crucial to solving a mystery. See how sophisticated anomaly detection has led to a significant drop in credit card fraud. The same approach helps understand cultural trends that go viral.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E14 - Simulation - Beyond Data, Beyond Equations
24 luglio 201430minEnter the world of simulation, which allows researchers to model behavior that would otherwise be too dangerous or expensive to study. Investigate the history of the subject and its multiplying applications - from science and engineering to entertainment.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E15 - Overfitting - Too Good to Be Truly Useful
24 luglio 201431minLearn how to avoid the perils of overfitting, which is when an overly complex model or noisy data leads to flawed conclusions. Explore object lessons in this common pitfall, including an earthquake forecast that was disastrously wrong.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E16 - Bracketology - The Math of March Madness
24 luglio 201431minEvery year, millions of people engage in a hugely popular data exercise called March Madness. See how a mathematical approach called bracketology helps you excel at picking winners in the playoff games of the NCAA basketball tournament.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E17 - Quantifying Quality on the World Wide Web
24 luglio 201430minInternet searches used to be frustratingly hit-or-miss. See how Google changed that by creating a realistic model of the way web surfers use the Internet. Then look at attempts to hijack search results to improve page rankings and how programmers thwart these tactics.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E18 - Watching Words - Sentiment and Text Analysis
24 luglio 201434minWe are nearing the point where every book ever written is accessible and searchable in digital form - as already exists for the even more voluminous texts from Twitter, Facebook, and other media. Learn how data analysts mine this limitless storehouse of words for new cultural and business insights.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E19 - Data Compression and Recommendation Systems
24 luglio 201433minData compression is crucial for storing and transmitting digital images at a fraction of their original size. See how compression also improves online recommendations, as shown by the Netflix million dollar competition, which led to a new algorithm for personalized recommendations.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E20 - Decision Trees - Jump-Start an Analysis
24 luglio 201431minProbe the power of decision trees by breaking down the demographics of survivors of the Titanic disaster, an analysis that tells the tragic story of events aboard the sinking ship. Then test decision trees in other applications, marveling at their ability to carve quickly through data.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E21 - Clustering - The Many Ways to Create Groups
24 luglio 201432minClustering is a powerful way to discover new relationships in data by sorting it into groups, called clusters. Explore this family of techniques by searching for clusters in the Million Song Dataset. Then try other examples that show the exceptional flexibility of clustering.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E22 - Degrees of Separation and Social Networks
24 luglio 201431minTest the popular theory that six steps, at most, connect you to any person on the planet. Social networks like Facebook provide a wealth of data for quantifying our relative connectedness. See how graph theory helps you to visualize any linked phenomena.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E23 - Challenges of Privacy and Security
24 luglio 201433minBig data can be a big threat to privacy. Learn how surveillance cameras, smart phones, and Internet use provide a wealth of opportunities for tracking specific individuals. Examine privacy issues raised by corporate and government activity, and review what you can do to lead a more secure life.Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquistaS1 E24 - Getting Analytical about the Future
24 luglio 201435minFocus on a branch of data analytics called predictive analytics, concerned with predicting the future. Imagine attending such a conference years from now. What can you expect? Answer the question with the tools you have learned, and come up with some surprising forecasts!Iscriviti a The Great Courses Signature Collection o The Great Courses Living o acquista
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- Tim Chartier
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