Thursday, October 8, 2009
And the winners are...
The winners of the 2009 PHM Society challenge are posted here. Congratulations to both teams! And thanks to everyone who participated...
Sunday, July 12, 2009
FAQ #12: Scoring
Q: What score will be used to rank competitors? Best ever or last submitted?
A: Good question! There is an argument to be made (and in fact we have!) either way. You will be ranked on the basis of your best score ever.
A: Good question! There is an argument to be made (and in fact we have!) either way. You will be ranked on the basis of your best score ever.
Thursday, July 9, 2009
FAQ #11: Closing Time
Q: When are the final submissions due? Will the closing date be extended?
A: Entries submitted after 13 July 2009 23:59 Eastern Daylight Time (14 July 2009 03:59 Greenwich Mean Time) are not eligible for the competition. This closing date is firm.
A: Entries submitted after 13 July 2009 23:59 Eastern Daylight Time (14 July 2009 03:59 Greenwich Mean Time) are not eligible for the competition. This closing date is firm.
Thursday, June 25, 2009
FAQ#10: bad key fault
Q: Is the bad key fault equivalent to a "no load" condition?
A: No, there was partial loading. The shaft and the brake turned at different rates due to slippage between the output shaft and the brake.
A: No, there was partial loading. The shaft and the brake turned at different rates due to slippage between the output shaft and the brake.
Monday, May 25, 2009
FAQ#9: invited papers
Q: Your web site states that the "top scoring teams will be invited to give presentations at the special session, and submit papers to IJPHM". Does this means that only the first two (one from each category) will be invited?
A: No. We expect several competitors from both categories will be invited to present, depending on how they do.
A: No. We expect several competitors from both categories will be invited to present, depending on how they do.
FAQ#8: releasing the answers
Q: Are you going to post the solutions of the Data Challenge, e.g., after the competition?
A: Probably not all of them.
As with last year, we aren't releasing the full data set. Instead, we are holding on to it for use as a "blind standard" for comparing algorithms.
A: Probably not all of them.
As with last year, we aren't releasing the full data set. Instead, we are holding on to it for use as a "blind standard" for comparing algorithms.
Thursday, May 21, 2009
FAQ#7: Experimental Conditions II
Q: We would like to ask you to clarify your comment in FAQ#6. We are confused and not sure that we understood it correctly.
What do you mean by "a case"? Did you mean that "a case" is a specific combination of good and bad components, and that over all there are only 14 such combinations?
Are you saying that the same combination of faults is replicated 40 times (4 times in each combination of speed and load)?
If the answer to the last question is yes, the implication would be 40 identical lines in the results file for each of the 14 cases. Is that correct?
A: Yes, the same combination of faults is replicated 40 times.
However, the goal of the competition is to promote the exchange of innovative ideas and to advance PHM as a scientific discipline, and, this year in particular, to fault detection and magnitude estimation for a generic gearbox using accelerometer data and information about bearing geometry. Participants are scored based on their ability to correctly identify type, location, and magnitude and damage in a gear system.
Algorithms that rely on knowledge of this specific data set will be disqualified.
What do you mean by "a case"? Did you mean that "a case" is a specific combination of good and bad components, and that over all there are only 14 such combinations?
Are you saying that the same combination of faults is replicated 40 times (4 times in each combination of speed and load)?
If the answer to the last question is yes, the implication would be 40 identical lines in the results file for each of the 14 cases. Is that correct?
A: Yes, the same combination of faults is replicated 40 times.
However, the goal of the competition is to promote the exchange of innovative ideas and to advance PHM as a scientific discipline, and, this year in particular, to fault detection and magnitude estimation for a generic gearbox using accelerometer data and information about bearing geometry. Participants are scored based on their ability to correctly identify type, location, and magnitude and damage in a gear system.
Algorithms that rely on knowledge of this specific data set will be disqualified.
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