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<h2 number="22.1"><span class="header-section-number">22.1</span> What is Efficiency?</h2>
<p>The standard algorithm analyses in computer science measure efficiency
asymptotically as a function of problem size (such as data, number of
parameters, etc.) and typically do not consider constant additive
factors like startup times or multiplicative factors like speed of
operations. In practice, the constant factors are important; if run
time can be cut in half or more, that’s a huge gain. This cha