Paper: Improving Text Stream Clustering using Term Burstiness and Co-burstiness, SETN2016

Typos and small corrections:
- p. 3, Eq. 5: there is no need for taking the absolute of p_i, since it is a probability in [0, 1]
- p. 7, Sec. 4.3: \alpha and \gamma values were mistakenly inverted in the text. The correct is: \alpha = 3 and \gamma = 1.