Significance of $ \lambda $ in Basis Pursuit

1. How does compressed sensing work?
2. What is bpdn?

How does compressed sensing work?

Compressed sensing addresses the issue of high scan time by enabling faster acquisition by measuring fewer Fourier coefficients. This produces a high-quality image with relatively lower scan time. Another application (also discussed ahead) is for CT reconstruction with fewer X-ray projections.

What is bpdn?

Borrower Payment Dependent Notes (BPDN) are debt obligations of YieldStreet that are tied to the performance of a loan made by YieldStreet. BPDN helps YieldStreet structure debt transactions more efficiently by allowing for a greater number of investors in a given transaction, and lower minimum investments.