The quality of so 仕ware mainly depends on the sonw ・ are development proccss . In order to develop high − quality and reliable software to incrcase customer satisfaction , quantitatjvc mcasurement ofpr 句 ect lnanagement that can be used to control the software development process , and evaluatc software quality , is very effectivc . This paper discusses risk managcmcnt technique which ident { fies and mitigates p 呵 ect risks quantitatively in the early − stage of pr ( } jects , earned value

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... gement ( EVM ) techniquo which predicts and controls pr ( ) ject progress by using the quantitativc data , and rellability assessment tochniquc which evaluates the achievemcnt lcvcl of software quality quantitativcly . Further , we discuss the pr ( ) ject management techniqucs to develop high − quality and reliablc software by using thc high − quality process .