Define more measurement terms

report.tex

@@ -188,13 +188,13 @@ \subsubsection{Accuracy}
 Accuracy is a measure that shows how many prefetches were useful.
 
 \subsubsection{Coverage}
-\todo{what is coverage?}
+Coverage is a measurement that answers the question of how many potential prefetch candidates were identified by the prefetcher.
 
 \subsubsection{Identified}
-\todo{what is identified?}
+Identified is a measure that shows how many prefetches have been issued to the cache controller by the prefetcher.
 
 \subsubsection{Issued}
-Issued is a measure that shows how many prefetches have been issued by the prefetcher in total.
+Issued is a measure that shows how many prefetches have been issued to the next memory hierarchy level by the cache controller.
 
 \subsection{PFJudge}