I'm Sorry I Haven't a Clue pause in the middle of speaking, a reference to Radio 4's other long-running panel show "Just a Minute". (Likewise, occasionally on "Just a Minute", a panellist will make a challenge of "Mornington Crescent".) Chairman Jack Dee frequently pokes fun at "Just a Minute", particularly its chairman Nicholas Parsons, whom he mimics in constantly emphasising the long experience of some panellists, and the fact that the programme can be heard all over the world. The programme has won the Gold Sony Radio Comedy Award three times: Other awards: "Clue" has been broadcast since 11 April 1972 on BBC Radio 4 with
I-spline I-spline In the mathematical subfield of numerical analysis, an I-spline is a monotone spline function. A family of "I-spline" functions of degree "k" with "n" free parameters is defined in terms of the M-splines "M"("x"|"k", "t") where "L" is the lower limit of the domain of the splines. Since M-splines are non-negative, "I-splines" are monotonically non-decreasing. Let "j" be the index such that "t" ≤ "x" < "t". Then "I"("x"|"k", "t") is zero if "i" > "j", and equals one if "j" − "k" + 1 > "i". Otherwise, "I-splines" can be used as basis splines for regression analysis and