ace.approximation.html">skillspace.approximation()</a></code> </p>
        </td>
        <td><p>Skill Space Approximation</p></td>
      </tr><tr><td>
          <p><code><a href="skillspace.hierarchy.html">skillspace.hierarchy()</a></code> <code><a href="skillspace.hierarchy.html">skillspace.full()</a></code> </p>
        </td>
        <td><p>Creation of a Hierarchical Skill Space</p></td>
      </tr><tr><td>
          <p><code><a href="slca.html">slca()</a></code> <code><a href="slca.html">summary(<i>&lt;s