Computerised trading agents may help humans build better markets

THANKS to declining markets, investment banks are getting rid of many of their highly-paid traders. When markets recover, the banks might be tempted to replace them with rather cheaper talent. One alternative has been around for a while but has yet to catch on: autonomous trading agents-computers programmed to act like the human version without such annoying costs as holidays, lunch breaks or bonuses. Program trading has, of course, been done before; some blamed the 1987 stock market crash on computers instructed with simple decision-making rules. But robots can be smarter than that.

Dave Cliff, a researcher at Hewlett-Packard Laboratories in Bristol, England, has been creating trading robots for seven years. In computer simulations he lets them evolve "genetically", and so allows them to adapt and fit models of real-world financial markets. His experiments have suggested that a redesign of some markets could lead to greater efficiency. Last year, a research group at IBM showed that Mr Cliff's artificial traders could consistently beat the human variety, in various kinds of market. Nearly all take the shape of an auction(拍卖). One well-known type is the English auction, familiar to customers of the salesrooms(拍卖场)of Christie's and Sotheby's, where sellers keep mum on their offer price, and buyers increase their bids by stages until only one remains.

At the other extreme is the Dutch auction, familiar to 17th-century tulip-traders in the Netherlands as well as to bidders for American Treasury bonds. Here, buyers remain silent, and a seller reduces his price until it is accepted. Most markets for shares, commodities, foreign exchange and derivatives are a mixture of these two types: buyers and sellers can announce their bid or offer prices at any time, and deals are constantly being closed, a so-called "continuous double auction".

Mr Cliff's novel idea was to apply his evolutionary computer programs to marketplaces themselves. Why not, he thought, try and see what types of auction would let traders converge(趋同) most quickly towards a balance price? The results were surprising. In his models, auctions that let buyers and sellers bid at any time like most of today's financial exchanges were less efficient than ones that required relatively more bids from either buyers or sellers. These "evolved auctions" also withstood big market shocks, such as crashes and panics, better than today's real-world versions. Mr Cliff's most recent results, which will be presented in Sydney, Australia, on December 10th, show that the best type of auction for any market depends crucially on even slight differences in the number of buyers and sellers.

Bank of America has been investigating these new auctions, along with robotic traders, for possible use in electronic exchanges. The hope is that today's financial auctions and online marketplaces might work better by becoming more like their English and Dutch ancestors.

1.What is the passage mainly about?

A. A review of two kinds of auctions.         B. An introduction of trading robots.

C. A survey of the trading market.          D. About trading alternatives.

2.Which of the following is true according to the text?

A. Mr Cliff’s robot traders have now been used in real-world markets.

B. Robot traders can evolve like creatures.

C. There is room for improvement in efficiency in trading markets.

D. The English auction is the most popular trading form.

3.What can we infer from the text?

A. Existing auctions cannot withstand market shocks

B. The Dutch auction is better than the continuous double auction

C. It’s hard for traders to reach a balanced price

D. The best type of auction takes place when the number of the buyers is equal to that of sellers

4.What’s the author’s attitude toward robot traders?

A. Prejudiced           B. Objective      C. Critical                       D. Optimistic

Computerised trading agents may help humans build better markets

THANKS to declining markets, investment banks are getting rid of many of their highly-paid traders. When markets recover, the banks might be tempted to replace them with rather cheaper talent. One alternative has been around for a while but has yet to catch on: autonomous trading agents-computers programmed to act like the human version without such annoying costs as holidays, lunch breaks or bonuses. Program trading has, of course, been done before; some blamed the 1987 stock market crash on computers instructed with simple decision-making rules. But robots can be smarter than that.

Dave Cliff, a researcher at Hewlett-Packard Laboratories in Bristol, England, has been creating trading robots for seven years. In computer simulations he lets them evolve "genetically", and so allows them to adapt and fit models of real-world financial markets. His experiments have suggested that a redesign of some markets could lead to greater efficiency. Last year, a research group at IBM showed that Mr Cliff's artificial traders could consistently beat the human variety, in various kinds of market. Nearly all take the shape of an auction(拍卖). One well-known type is the English auction, familiar to customers of the salesrooms(拍卖场)of Christie's and Sotheby's, where sellers keep mum on their offer price, and buyers increase their bids by stages until only one remains.

At the other extreme is the Dutch auction, familiar to 17th-century tulip-traders in the Netherlands as well as to bidders for American Treasury bonds. Here, buyers remain silent, and a seller reduces his price until it is accepted. Most markets for shares, commodities, foreign exchange and derivatives are a mixture of these two types: buyers and sellers can announce their bid or offer prices at any time, and deals are constantly being closed, a so-called "continuous double auction".

Mr Cliff's novel idea was to apply his evolutionary computer programs to marketplaces themselves. Why not, he thought, try and see what types of auction would let traders converge(趋同) most quickly towards a balance price? The results were surprising. In his models, auctions that let buyers and sellers bid at any time like most of today's financial exchanges were less efficient than ones that required relatively more bids from either buyers or sellers. These "evolved auctions" also withstood big market shocks, such as crashes and panics, better than today's real-world versions. Mr Cliff's most recent results, which will be presented in Sydney, Australia, on December 10th, show that the best type of auction for any market depends crucially on even slight differences in the number of buyers and sellers.

Bank of America has been investigating these new auctions, along with robotic traders, for possible use in electronic exchanges. The hope is that today's financial auctions and online marketplaces might work better by becoming more like their English and Dutch ancestors.

1.What is the passage mainly about?

A. A review of two kinds of auctions.     B. An introduction of trading robots.

C. A survey of the trading market.        D. About trading alternatives.

2.Which of the following is true according to the text?

A. Mr Cliff’s robot traders have now been used in real-world markets.

B. Robot traders can evolve like creatures.

C. There is room for improvement in efficiency in trading markets.

D. The English auction is the most popular trading form.

3.What can we infer from the text?

A. Existing auctions cannot withstand market shocks

B. The Dutch auction is better than the continuous double auction

C. It’s hard for traders to reach a balanced price

D. The best type of auction takes place when the number of the buyers is equal to that of sellers

4.What’s the author’s attitude toward robot traders?

A. Prejudiced          B. Objective             C. Critical                 D. Optimistic

Standard English is that variety of English which is usually used in print，and which is normally taught in schools and to non-native speakers learning the language．It is also the variety which is normally spoken by educated people and used in news broadcasts and other similar situations．The difference between standard and non-standard，it should be noted，has nothing in principle（原理）to do with differences between formal and informal language：Standard English has informal as well as formal variants．

Historically the standard variety of English is based on the London Dialect of English that developed after the Norman Conquest resulted in the removal of the Court from Winchester to London．This dialect became the one preferred by the educated，and it was developed and promoted as a model，or norm，for wider and wider parts of society．It was also the norm that was carried overseas．But not one unaffected by such export．Today，standard English is codified（编写）to the degree that the grammar and vocabulary of English are much the same everywhere in the world where English is used：difference among the local standards is really quite minor，so that the Singapore，South Africa，and Irish varieties are really very little different from one another so far as grammar and vocabulary are concerned．Indeed，standard English is so powerful that it puts a tremendous pressure on all local varieties，to the degree that many of the long-established dialects of England have lost much of their vigor（活力）and there is much pressure on them to converge（靠拢）towards the standard．This latter situation is not unique to English：it is also in other countries where processes of standardization are under way．But it sometimes creates problems for speakers who try to strike some kind of compromise between local norms and national，even super-national ones．

68．The main topic of the text is       

A．the difference between standard English and non-standard English．

B．the influence between standard English and non-standard English．

C．the origin and development of standard English used nowadays．

D．the difference between standard English and the London dialects．

69．Which of the following statements is TRUE according the text?       

A．Standard English can be both formal and informal．

B．Standard English doesn’t differ from non-standard English in principle．

C．Informal English is the same as non-standard English．

D．Standard English is better than Non-standard English．

70．Standard English is used in the following situations EXCEPT        ．

A．in schools                                           B．by educated and native speakers only

C．in news broadcasts                              D．in print

71．The stronger influence of standard English is causing        ．

A．different local standards to arise            B．difference among dialects to grow

C．many dialects to lose uniqueness           D．many new varieties to disappear

72．In terms of grammar and vocabulary，standard English         ．

A．differs greatly from dialects in the U．K

B．differs little from any variety of English in the world

C．differs greatly from dialects outside the U．K

D．differs a little from any variety of English

Computerised trading agents may help humans build better markets

THANKS to declining markets, investment banks are getting rid of many of their highly-paid traders. When markets recover, the banks might be tempted to replace them with rather cheaper talent. One alternative has been around for a while but has yet to catch on: autonomous trading agents-computers programmed to act like the human version without such annoying costs as holidays, lunch breaks or bonuses. Program trading has, of course, been done before; some blamed the 1987 stock market crash on computers instructed with simple decision-making rules. But robots can be smarter than that.

Dave Cliff, a researcher at Hewlett-Packard Laboratories in Bristol, England, has been creating trading robots for seven years. In computer simulations he lets them evolve "genetically", and so allows them to adapt and fit models of real-world financial markets. His experiments have suggested that a redesign of some markets could lead to greater efficiency. Last year, a research group at IBM showed that Mr Cliff's artificial traders could consistently beat the human variety, in various kinds of market. Nearly all take the shape of an auction(拍卖). One well-known type is the English auction, familiar to customers of the salesrooms(拍卖场)of Christie's and Sotheby's, where sellers keep mum on their offer price, and buyers increase their bids by stages until only one remains.

At the other extreme is the Dutch auction, familiar to 17th-century tulip-traders in the Netherlands as well as to bidders for American Treasury bonds. Here, buyers remain silent, and a seller reduces his price until it is accepted. Most markets for shares, commodities, foreign exchange and derivatives are a mixture of these two types: buyers and sellers can announce their bid or offer prices at any time, and deals are constantly being closed, a so-called "continuous double auction".

Mr Cliff's novel idea was to apply his evolutionary computer programs to marketplaces themselves. Why not, he thought, try and see what types of auction would let traders converge(趋同) most quickly towards a balance price? The results were surprising. In his models, auctions that let buyers and sellers bid at any time like most of today's financial exchanges were less efficient than ones that required relatively more bids from either buyers or sellers. These "evolved auctions" also withstood big market shocks, such as crashes and panics, better than today's real-world versions. Mr Cliff's most recent results, which will be presented in Sydney, Australia, on December 10th, show that the best type of auction for any market depends crucially on even slight differences in the number of buyers and sellers.

Bank of America has been investigating these new auctions, along with robotic traders, for possible use in electronic exchanges. The hope is that today's financial auctions and online marketplaces might work better by becoming more like their English and Dutch ancestors.

1.What is the passage mainly about?

A. A review of two kinds of auctions.       B. An introduction of trading robots.

C. A survey of the trading market.          D. About trading alternatives.

2.Which of the following is true according to the text?

A. Mr Cliff’s robot traders have now been used in real-world markets.

B. Robot traders can evolve like creatures.

C. There is room for improvement in efficiency in trading markets.

D. The English auction is the most popular trading form.

3.What can we infer from the text?

A. Existing auctions cannot withstand market shocks

B. The Dutch auction is better than the continuous double auction

C. It’s hard for traders to reach a balanced price

D. The best type of auction takes place when the number of the buyers is equal to that of sellers

4.What’s the author’s attitude toward robot traders?

 A. Prejudiced           B. Objective        C. Critical         D. Optimistic