National Geographic has a fascinating article on swarm theory and some of its potential for business and industry:
That's how
swarm intelligence works: simple creatures following simple rules, each
one acting on local information. No ant sees the big picture. No ant
tells any other ant what to do. Some ant species may go about this with
more sophistication than others. (Temnothorax albipennis, for
example, can rate the quality of a potential nest site using multiple
criteria.) But the bottom line, says Iain Couzin, a biologist at Oxford
and Princeton Universities, is that no leadership is required. "Even
complex behavior may be coordinated by relatively simple interactions,"
he says.
Inspired by the elegance of this idea, Marco Dorigo,
a computer scientist at the Université Libre in Brussels, used his
knowledge of ant behavior in 1991 to create mathematical procedures for
solving particularly complex human problems, such as routing trucks,
scheduling airlines, or guiding military robots.
In Houston,
for example, a company named American Air Liquide has been using an
ant-based strategy to manage a complex business problem. The company
produces industrial and medical gases, mostly nitrogen, oxygen, and
hydrogen, at about a hundred locations in the United States and
delivers them to 6,000 sites, using pipelines, railcars, and 400
trucks. Deregulated power markets in some regions (the price of
electricity changes every 15 minutes in parts of Texas) add yet another
layer of complexity...
Ants had
evolved an efficient method to find the best routes in their
neighborhoods. Why not follow their example? So Air Liquide combined
the ant approach with other artificial intelligence techniques to
consider every permutation of plant scheduling, weather, and truck
routing—millions of possible decisions and outcomes a day. Every night,
forecasts of customer demand and manufacturing costs are fed into the
model.
"It takes four hours to run, even with the biggest
computers we have," Harper says. "But at six o'clock every morning we
get a solution that says how we're going to manage our day."
For
truck drivers, the new system took some getting used to. Instead of
delivering gas from the plant closest to a customer, as they used to
do, drivers were now asked to pick up shipments from whichever plant
was making gas at the lowest delivered price, even if it was farther
away.
"You want me to drive a hundred miles? To the drivers,
it wasn't intuitive," Harper says. But for the company, the savings
have been impressive. "It's huge. It's actually huge."