The Region Algebra is a set-at-a-time algebra for querying text regions. We show that satisfiability, inclusion, and equivalence testing of region algebra expressions are PSPACE-complete. This improves upon the previously known NP lower bounds and EXPTIME upper bounds.

We present a new methodology for proving distribution testing lower bounds, establishing a connection between distribution testing and the simultaneous message passing (SMP) communication model. Extending the framework of Blais, Brody, and Matulef [BBM12], we show a simple way to reduce (private-coin) SMP problems to distribution testing problems. This method allows us to prove new distribution...

Following the financial and debt crises in euro area global COVID pandemic, governments supported their economies by increasing borrowing accumulating with ambiguous long-run effects on non-performing loans (NPLs). We empirically investigate determinants of NPLs using quarterly (2003Q1-2020Q2) aggregate data for Greece applying autoregressive distributed lag (ARDL) bounds testing approach. offe...

There are many algorithms for testing satisfiability — how to evaluate and compare them? It is common (but still disputable) to identify the efficiency of an algorithm with its worst-case complexity. From this point of view, asymptotic upper bounds on the worst-case running time and space is a criterion for evaluation and comparison of algorithms. In this chapter we survey ideas and techniques ...