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 Dec 9 awarded Popular Question Nov 7 awarded Yearling Jul 21 comment Expected value of the minimum of a non-negative random variable and a constant I didn't know about the use of CDF for calculating the expectation of a non-negative r.v. For the convenience of those like me out there, I just add here the link to a related answer: math.stackexchange.com/questions/64186/… Jul 20 comment Expectation of $\min(X, c)$ for $X$ truncated r.v. and $c$ constant @wolfies I was not aware of the difference between truncated and censored, thanks for the clarification. Jul 20 comment Expectation of $\min(X, c)$ for $X$ truncated r.v. and $c$ constant @dsaxton so if $X$ is continuous we have $E(X;X\leq c) = \int_{-\infty}^{c}x\cdot f(x) dx$ whereas if $X$ is defined over the interval $[d, c]$ we have $E(X;X\leq c) = \int_{d}^{c}x\cdot f(x) dx$, right? Jul 20 revised Expectation of $\min(X, c)$ for $X$ truncated r.v. and $c$ constant edited tags Jul 20 asked Expectation of $\min(X, c)$ for $X$ truncated r.v. and $c$ constant Dec 20 awarded Caucus Oct 22 comment Check if intervals overlap @knedlsepp yes, you are right, the condition (*) is not correct. I should use condition () also for each couple $(i,j)$, not only over the whole set $A$. Oct 22 asked Check if intervals overlap Jul 2 awarded Curious Feb 1 comment Is there a name for this type of optimization problem? There is a typo in the second constraint: $b_1 \cdot x_2$ should be $b_1 \cdot x_1$, shouldn't it? Jan 28 revised Highest (lowest) index of positive time-indexed variable edited tags Jan 28 revised Highest (lowest) index of positive time-indexed variable Edited tags Jan 28 comment Transportation problem in supply chain I do not understand what do you mean by "to solve transportation problem with only members in the chain" and "with multiple members in the chain". For what I get, this is a classical transportation problem where you have finite capacity at each site. You may want to define the flow from each origin to each destination on each level, keeping the capacities and the demands into account (Hint: $x_{ij}$ is the quantity from $i \in \{1,2,3\}$ to $j \in \{A,B,C\}$). Jan 28 asked Highest (lowest) index of positive time-indexed variable Nov 16 comment Converting if else constraints into linear ones Just out of curiosity, in what kind of problem are you using that constraint? what are you representing, if I may ask? Nov 15 awarded Organizer Nov 15 revised Converting if else constraints into linear ones I suggest to add the mathematical-modeling tag Nov 15 suggested approved edit on Converting if else constraints into linear ones