What is a Grey Number?
Grey numbers are the basic building blocks of Grey System Theory, which was developed by Julong Deng and Sifeng Liu. Grey numbers are frequently found in grey data, which is a frequent occurrence in real-world problems where we rarely have perfect data. Grey number is a random number whose range is known but exact location is unknown. For example, the age of a building seems to be within 5 and 8 years. Then, the grey number representing its age would be [5, 8], whereas the “true value” can be any number from 5 to 8.
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Where to find more information?
Please visit www.GreySystem.org for any information on grey data, grey numbers and their operations. Also, you would find a lot of interesting information there that can be very useful in your research and work. Also, more information can be found in the works of grey systems scholars, or in the pages of the journals dedicated to grey number and grey system. Also, a list of grey number-based literature can be found here, or you can visit following links to know more about grey numbers and their operations:- https://doi.org/10.52812/ijgs.3
- https://doi.org/10.52812/ijgs.46
- https://doi.org/10.52812/ijgs.77
- https://doi.org/10.1002/bse.2623
- https://doi.org/10.1109/TEM.2019.2920904
- https://doi.org/10.1007/s00500-021-05782-6
- https://doi.org/10.1109/ISKE47853.2019.9170357