A team of researchers is given a large data set consisting of time series of average...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A team of researchers is given a large data set consisting of time series of average monthly temperatures at a million points on the surface of the globe over 20 years. The columns correspond to months, and each row is a time series. The research team analyzes this data using correlation, L1 distance, and Euclidean distance to compare the time series and find which time series are similar to one another. Specifically, they compute the correlation/distance of each time series with every other time series. However, after visualizing some time series in the data set, the team discovers that the columns (the months) in each year of the original data are out of order, i.e., instead of (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov Dec) the order is (Jan, Jul, Feb, Aug, Mar, Sep, Apr, Oct, May, Nov, Jun, Dec). Rows are in proper order. a) What property of temperature time series data would make it obvious that the months were not in proper order when the time series were plotted? b) The team member who performed the correlation/distance calculations submits a job with the properly ordered months to recalculate the correlations/distances, but after doing so realizes that this was unnecessary. Why? A team of researchers is given a large data set consisting of time series of average monthly temperatures at a million points on the surface of the globe over 20 years. The columns correspond to months, and each row is a time series. The research team analyzes this data using correlation, L1 distance, and Euclidean distance to compare the time series and find which time series are similar to one another. Specifically, they compute the correlation/distance of each time series with every other time series. However, after visualizing some time series in the data set, the team discovers that the columns (the months) in each year of the original data are out of order, i.e., instead of (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov Dec) the order is (Jan, Jul, Feb, Aug, Mar, Sep, Apr, Oct, May, Nov, Jun, Dec). Rows are in proper order. a) What property of temperature time series data would make it obvious that the months were not in proper order when the time series were plotted? b) The team member who performed the correlation/distance calculations submits a job with the properly ordered months to recalculate the correlations/distances, but after doing so realizes that this was unnecessary. Why?
Expert Answer:
Answer rating: 100% (QA)
a Just by looking at the values a person can tell that the data points are not order... View the full answer
Related Book For
Engineering Economy
ISBN: 978-0132554909
15th edition
Authors: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Posted Date:
Students also viewed these finance questions
-
A team of researchers has obtained a dinosaur bone (Tyrannosaurus rex) and has attempted to extract ancient DNA from it. Using primers to the 12S rRNA mitochondrial gene, they have used PCR and...
-
A team of researchers has developed a process for extracting combustible methane gas from garbage. With a specially adapted internal combustion engine, the team claims that an automobile can be...
-
A team of researchers (Singer et al., 2000) used the Survey of Consumer Attitudes to investigate whether incentives would improve the response rates on telephone surveys. A national sample of 735...
-
What is a buy-sell agreement, and how does life insurance facilitate it?
-
What is a structural theory and how is it different from measurement theory?
-
You purchase 10 call option contracts with a strike price of $75 and a premium of $4.05. If the stock price at expiration is $83.61, what is your dollar profit? What if the stock price is $69.56?
-
In 1970, Rose Mary Knick purchased 90 acres of land in Scott Township, Lackawanna County, Pennsylvania. In 2008, another resident of Scott Township discovered documents that suggested that one of...
-
Condensed financial data of Fairchild Company for 2010 and 2009 are presented below. Additional information: During the year, $70 of common stock was issued in exchange for plant assets. No plant...
-
Why are both ER Diagrams and Relational Modeling needed when a database system is developed?
-
1. Is Jones correct? That is, using the more complete data set, is it true that Jones has the lowest defect rate overall? Are Joness percentages correct overall (i.e., combining domestic and overseas...
-
If f(x) = x +3, g(x)=x-5 and H(x) = : (a) evaulate f(1), g(1) and H(1). (b) graph f(x), g(x) and H(x) for -5 x 10. (c) evaluate f(3x), g(3x) and H(3x). (d) evaluate f(x+h), g(x+h) and H(x + h).
-
The value of postponement decreases as uncertainty increases or demand is positively correlated among end products. uncertainty decreases or demand is positively correlated among end products....
-
Identify the relative strengths and weaknesses of various transportation network design options.
-
What modes of transportation are best suited for the delivery of timecritical small packages? Why?
-
A high level of product availability requires ________, which raises supply chain costs. large inventories increased revenues reduced costs understocking the product
-
Understand conditions under which postponement is valuable in a supply chain.
-
Company x engages in an advertising barter transaction with company y. how should x account for the transaction and record the advertising received: A. at the fair value of the noncash consideration...
-
Determine whether the lines are parallel, perpendicular, or neither. 2x + 3y = -12, 2y - 3x = 8
-
A steam generator is needed in the design of a new power plant. This generator can j be fired by three different fuels, A, B, or C, with the | following cost implications. If the study period is 20...
-
A "greenway" walking trail has been proposed by the city of Richmond. Two mutually exclusive alternative locations for the 2-meter-wide trail have been proposed: one is on flat terrain and is 14...
-
Consider the following data on two pieces of equipment: a. Suppose that the capital investment on Equipment 1 is known with certainty. By how much would the estimate of capital investment on...
-
Crane l uses 10 kJ of energy to lift a 50 kg box to the roof of a building. Crane 2 uses 20 kl to lift a 100 kg box the same distance. Which crane is more efficient? A. Crane 1 B. Crane 2 C. Both...
-
Christina throws a javelin into the air. As she propels it forward from rest, she does 270 J of work on it. At its highest point, its gravitational potential energy has increased by 70 J. What is the...
-
Two samples of ideal gas, sample 1 and sample 2, have the same thermal energy. Sample l has twice as many atoms as sample 2. What can we say about the temperatures of the two samples? A. T>T B. T = T...
Study smarter with the SolutionInn App