 NCG methods. The update methods for <img src="ncg_doc_eq08047493418710975323.png" alt="$\beta_{i+1}$" style="width:9px;height:6px;"> available in Poblano are listed below. Note that the special case of <img src="ncg_doc_eq02535271716144487441.png" alt="$\beta_{i+1} = 0$" style="width:20px;height:6px;"> leads to the steepest descent method [3], which is available by specifying this update using the input parameter described in the <a href="B_ncg_docs.html#9">Method Specific Input Parameters</a> section belo