The cellulose dissolved with EMIM DEP retained some of its coloration but regenerated into purer cellulose than from ILs with [Ac.
From the eleven ILs used for dissolving cellulose only six (AMIMCl, BMIMCl, EMIMCl, BMIMAc, EMIMAc, EMIM DEP) were able to dissolve it to make 10 wt% solutions while one (BMpyCl) degraded the cellulose.
According to the literature, most popular ILs used to dissolve cellulose under conventional heating (<100[degrees]C) are imidazolium-based ones: AMIMCl, BMIMCl, BMIMAc, EMIMAc, EMIMCl, EMIM DEP (Fukaya et al.
The metric is a variation of EMIM (expected mutual information measure) [Church and Hanks 1989; van Rijsbergen 1979], which is widely used to measure significance of associations.
The reason we choose not to use EMIM is that it is not normalized over the number of occurrences of a and b and unfairly favors high-frequency word forms.