Clarke saw the Baggies' gamble on trying to win last weekend's home Barclays Premier League clash with Manchester City backfire as Edin Dzeko nicked a stoppage-time winner.
"I think what I said after the game could have been construed in different ways - but I don't regret that we tried to win the game," he said. "I regretted that we didn't get something out of the game but that is a big difference."
He added: "I wouldn't change my philosophy and think, 'if only I'd put on three defenders and shut up shop and tried see the game out'.
"That's not the way we've been this year and in other games we have been rewarded for being attacking late in a game and making attacking changes. On another day and with the right bounce of the ball we would have scored the winner.
"We had chances to get the winner before Manchester City caught us with the sucker-punch and we also had a chance cleared off the line after the 2-1. From that point of view we have no regrets and the philosophy won't change. We want to be positive."
Clarke worked under Ruud Gullit and Sir Bobby Robson on Tyneside and believes the Magpies are a shining example for many clubs to try to emulate.
He said: "I think Newcastle is a blueprint for any club with ambition.
"Every club wants to be successful and, if you are, is it the right thing to go out and sign 20 players and double the size of your squad or do you try to nurture what you've got and bring through some young ones?
"That's what Newcastle have done and they've done it with a good balanced squad and without being crazy in the transfer market. That's a good blueprint for a number of clubs who might be in that position in the future."