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A method for visualizing variations in a corpus of information. The corpus includes a plurality of information entries, which are divided into a plurality of sub-groups according to a differentiating parameter of the entries. For each of the entries, characteristics of information contained therein

A method for visualizing variations in a corpus of information. The corpus includes a plurality of information entries, which are divided into a plurality of sub-groups according to a differentiating parameter of the entries. For each of the entries, characteristics of information contained therein are extracted and pairs of different characteristics that appear together in at least one of the entries are found. An occurrence value is determined for each of the pairs of characteristics in each sub-group in which both of the characteristics appear. The occurrence values of at least some of the pairs of characteristics for at least two of the sub-groups are compared, and an indication of the comparative occurrence values of the pairs is provided.

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A method for visualizing variations in a corpus of information. The corpus includes a plurality of information entries, which are divided into a plurality of sub-groups according to a differentiating parameter of the entries. For each of the entries, characteristics of information contained therein

A method for visualizing variations in a corpus of information. The corpus includes a plurality of information entries, which are divided into a plurality of sub-groups according to a differentiating parameter of the entries. For each of the entries, characteristics of information contained therein are extracted and pairs of different characteristics that appear together in at least one of the entries are found. An occurrence value is determined for each of the pairs of characteristics in each sub-group in which both of the characteristics appear. The occurrence values of at least some of the pairs of characteristics for at least two of the sub-groups are compared, and an indication of the comparative occurrence values of the pairs is provided. he new cancellation comprising an instruction to cancel an order for securities, the cancellation further comprising an order identification; searching a market queue for an order having the same order identification as the new cancellation order identification, wherein the order is not found; searching a cancellation queue for a cancellation having an order identification equal to the new cancellation's order identification; if no cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, placing a copy of the new cancellation in the cancellation queue and sending the new cancellation to a market; if a cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, incrementing a redundancy count in the found cancellation and discarding the new cancellation; and periodically, for each queued cancellation having a redundancy count greater than zero, decrementing the redundancy count and sending an additional cancellation to the market. 8. The method of claim 7 wherein periodically decrementing the redundancy count for each queued cancellation having a redundancy count greater than zero further comprises periodically decrementing every three seconds the redundancy count for each queued cancellation having a redundancy count greater than zero. 9. The method of claim 7 further comprising, periodically deleting from the cancellation queue each queued cancellation having a redundancy count equal to zero. 10. A method for canceling orders for securities in an automated securities trading environment, the method comprising the steps of: receiving a new cancellation, the new cancellation comprising an instruction to cancel an order for securities, the cancellation further comprising an order identification; searching a cancellation queue for a cancellation having an order identification equal to the new cancellation's order identification; if no cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, placing a copy of the new cancellation in the cancellation queue and sending the new cancellation to a market; if a cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, incrementing a redundancy count in the found cancellation and discarding the new cancellation; receiving an acknowledgement to a cancellation having an order identification corresponding to a queued cancellation wherein the queued cancellation was previously sent to the market and the queued cancellation has a redundancy count greater than zero; and decrementing the redundancy count of the queued cancellation and sending an additional cancellation equivalent to the queued cancellation to the market. 11. The method of claim 10 wherein the redundancy count of the queued cancellation is equal to zero, the method further comprising deleting the queued cancellation from the cancellation queue. 12. A method for canceling orders for securities in an automated securities trading environment, wherein, when the new cancellation is received, the order has already been sent from the system to a market, the method comprising the steps of: receiving a new cancellation, the new cancellation comprising an instruction to cancel an order for securities, the cancellation further comprising an order identification, the order identification being the same as the cancellation's order identification, wherein, when the new cancellation is received, the order has already been sent from the system to a market; searching a market queue for an order having the same order identification as the new cancellation order identification, wherein the order is not found; searching a cancellation queue for a cancellation having an order identification equ al to the new cancellation's order identification; if no cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, placing a copy of the new cancellation in the cancellation queue and sending the new cancellation to a market; if a cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, incrementing a redundancy count in the found cancellation and discarding the new cancellation; receiving an acknowledgement to a cancellation having an order identification corresponding to a queued cancellation wherein the queued cancellation was previously sent to the market and the queued cancellation has a redundancy count greater than zero; and decrementing the redundancy count of the queued cancellation and sending an additional cancellation equivalent to the queued cancellation to the market. 13. The method of claim 12 wherein the redundancy count of the queued cancellation is equal to zero, the method further comprising deleting the queued cancellation from the cancellation queue. 14. A method for canceling orders for securities in an automated securities trading environment, the method comprising the steps of: receiving a new cancellation, the new cancellation comprising an instruction to cancel an order for securities, the cancellation further comprising an order identification; searching a cancellation queue for a cancellation having an order identification equal to the new cancellation's order identification; if no cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, placing a copy of the new cancellation in the cancellation queue and sending the new cancellation to a market; if a cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, incrementing a redundancy count in the found cancellation and discarding the new cancellation; and receiving a response to a cancellation having an order identification corresponding to a queued cancellation wherein the queued cancellation was previously sent to the market and the queued cancellation has a redundancy count greater than zero; and decrementing the redundancy count of the queued cancellation and sending an additional cancellation equivalent to queued cancellation to the market. 15. The method of claim 14 wherein the redundancy count of the queued cancellation equals to zero, the method further comprising deleting the queued cancellation from the cancellation queue. 16. A method for canceling orders for securities in an automated securities trading environment, wherein, when the new cancellation is received, the order has already been sent from the system to a market, the method comprising the steps of: receiving a new cancellation, the new cancellation comprising an instruction to cancel an order for securities, the cancellation further comprising an order identification, the order identification being the same as the cancellation's order identification, wherein, when the new cancellation is received, the order has already been sent from the system to a market; searching a market queue for an order having the same order identification as the new cancellation's order identification, wherein the order is not found; if no cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, placing a copy of the new cancellation in the cancellation queue and sending the new cancellation to a market; if a cancellation having an order identification equal to the new cancellation's order identification is found by searching the cancellation queue, incrementing a redundancy count in the found cancellation and discarding the new cancellation; and receiving a r