The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

I guess it's because pyarrow.nulls initialize the nested arrays to nulls, but they are not nullable so they should be initialized to default values. Alternatively, the cast / validate method should ...

Abstract: Several sparse linear array structures have recently been proposed to enhance the identifiability of direction-of-arrival estimation by using second-order or higher even-order statistics ...

Thanks for taking the time to report this. Can you attach an example that shows the issue? (Must be openly licensed, ideally in test_regress format.) module test2; typedef struct { struct { struct { ...

ABSTRACT: An asymptotic existence of balanced incomplete block (BIB) designs and pairwise balanced designs (PBD) has been discussed in [1]-[3]. On the other hand, the existence of additive BIB designs ...