diff --git a/classification/evaluation/helpers.py b/classification/evaluation/helpers.py
new file mode 100644
index 0000000..2d7f26a
--- /dev/null
+++ b/classification/evaluation/helpers.py
@@ -0,0 +1,39 @@
+import matplotlib.pyplot as plt
+import pandas as pd
+import numpy as np
+import seaborn as sns
+
+
+def set_size(width, fraction=1, subplots=(1, 1)):
+    """Set figure dimensions to avoid scaling in LaTeX.
+
+    Parameters
+    ----------
+    width: float
+            Document textwidth or columnwidth in pts
+    fraction: float, optional
+            Fraction of the width which you wish the figure to occupy
+
+    Returns
+    -------
+    fig_dim: tuple
+            Dimensions of figure in inches
+    """
+    # Width of figure (in pts)
+    fig_width_pt = width * fraction
+
+    # Convert from pt to inches
+    inches_per_pt = 1 / 72.27
+
+    # Golden ratio to set aesthetic figure height
+    # https://disq.us/p/2940ij3
+    golden_ratio = (5**.5 - 1) / 2
+
+    # Figure width in inches
+    fig_width_in = fig_width_pt * inches_per_pt
+    # Figure height in inches
+    fig_height_in = fig_width_in * golden_ratio * (subplots[0] / subplots[1])
+
+    fig_dim = (fig_width_in, fig_height_in)
+
+    return fig_dim