This paper pursues three goals. It first discusses why a mix of exclusive rights and open access regimes is the norm in many areas of resource allocation. Arguing that such coexistence can also be expected in spectrum, the paper identifies the determinants of the optimal mix of spectrum...

The field of artificial intelligence (AI) is experiencing a period of intense progress due to the consolidation of several key technological enablers. AI is already deployed widely and has a high impact on work and daily life activities. The continuation of this process will likely contribute to...