VERSION 0.99.4
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   o set.seeds argument is added in toyModel

VERSION 0.99.3
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   o Date fields in DESCRIPTION

VERSION 0.99.2
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   o Reconstuction Error and relative change of the error are reterned by NMF, NTF, and NTD
   o toyModel returns integar random tensor

VERSION 0.99.1
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   o Revised
   o DESCRIPTION is fixed
   o No intermediate files are saved, unless viz=FALSE (Default) is changed as viz=TRUE

   VERSION 0.99.0
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   o Package released