Update README.md

README.md

@@ -58,4 +58,4 @@ I'm actively working on extensions and refinements to CP decomposition for my Ph
 * Generalizing CP decomposition to accomodate different loss functions and regularization choices (e.g. constraining factors to be sparse, smooth, non-negative)
 * Better tools in Python / Julia
 * Incorporating time-warping into PCA and tensor decompositions in collaboration with [@nirum](http://niru.org/) and [@poolio](http://cs.stanford.edu/~poole/)
-  * [*described in more detail here*](alexhwilliams.info/pdf/warptour_cosyne_2017.pdf)
+  * [*described in more detail here*](http://alexhwilliams.info/pdf/warptour_cosyne_2017.pdf)