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Luck and right strategy together helps you win at auctions

Washington, Sat, 17 Mar 2012 ANI

Washington, March 17 (ANI): The right strategy doesn't guarantee advantage in auctions, real estate or stock market, you should also have good luck, researchers say.

 

In a study of hundreds of lowest unique bid auctions, Northwestern University researchers asked a different question: Who wins these auctions, the strategic gambler or the lucky one? The answer is the lucky. But, ironically, it's a lucky person using a winning strategy.

 

They found that all players intuitively use the right strategy, and that turns the auction into a game of pure chance.

 

The findings provide insight into playing the stock market, real estate market and other gambles.

 

"There are many contexts in which we think we are smart and at an advantage, such as buying real estate as prices start moving up," said Luis Amaral, an author of the study.

 

"But we don't realize we are competing against people doing the same thing. The advantage is gone, and it becomes a game of chance. So you better enjoy the process," said Amaral, a professor of chemical and biological engineering in the McCormick School of Engineering and Applied Science and an Early Career Scientist with the Howard Hughes Medical Institute.

 

Amaral and colleagues Filippo Radicchi and Andrea Baronchelli studied public data on 600 online auctions in Australia and Europe, played by 10,000 different auction participants with a total of 200,000 individual bids. (Lowest unique bid auctions occur all around the world, including in the U.S.)

 

The data allowed the researchers to analyze in a systematic way what is going on in each auction.

 

The work of Nobel Laureate John Nash on game theory is very relevant to these auctions, Amaral said.

 

An online auction is a classic game-you have some information and you try to guess what other people are doing, and, based on that guess, you try to define your best strategy.

 

In a lowest unique bid auction, participants place bids for a relatively valuable item, such as a car or boat, in an attempt to have the lowest unmatched bid at the time the auction ends.

 

The lowest bid is one cent, and the participant pays a fee, often a dollar, for each bid. After placing a bid, the participant is told if his or her bid currently is winning. If not, many bid again. Hundreds of times. On average, the auctioneer earns double the cost of the item being auctioned while participants can pay hundreds of dollars to lose.

 

The researchers conducted a computer simulation and identified what the optimal strategy is in lowest unique bid auctions. They found the strategy is a "bursty" one: consecutive bid values initially are close to each other, and then there is a "long jump" to another area of the bid space where more bid values are placed close to each other. And the pattern is repeated.

 

For example, an auction participant might place a bid, say of 8 cents. Then he places a number of nearby bids, 5, 6 and 7 cents, as well as 9, 10 and 11 cents. Then he makes a large leap to a different area, placing a bid of 47 cents and also placing several bids around that number. (Remember, every time he places a bid, he pays a fee.)

 

This mixed strategy combines exploitation (taking small steps in one area) and exploration (taking a big step to a new area). It is a smart strategy that gives you a better chance of winning, but the researchers discovered all the other participants have figured it out, too, wiping out any advantage to individuals.

 

"We couldn't identify a single person who was not using this strategy," Amaral said.

 

The "bursty" optimal strategy, he said, is similar to what an animal foraging for scarce food employs. An albatross, for example, has a vast ocean to explore, so it focuses its fishing in a small area for a time and then moves a great distance to try another area. Then it repeats this pattern.

 

In lowest unique bid auctions, people like to win and become overly optimistic about the amount of money they will lose. They rationally enter the auction to try to win a valuable item for a low price, but then they go on to irrationally stay in the auction - which is just a game of chance - and bid too much.

 

"At some point people will stop playing these online auctions. Humans are smart about recognizing the deck is stacked against them," Amaral said.

 

The study has been published in the journal PLoS One. (ANI)

 


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