## Corrections to Tools for Converting Text to Hypertext
by W. J. Blustein (1994)

### Overview

In revisiting the experiments described in my MSc. thesis I discovered that I
had made some errors in the computations I had reported. The errors are,
to my mind, minor because they do *not* affect the concept of the
type of evaluation I was demonstrating. The concept is as sound as ever.
The errors should be corrected nonetheless.

The changes affect Tables 4.1, 4.2 and 4.3 and the minor conclusion
in section 5.3.

### Corrections

#### Corrected Table 4.1 (page 37)

Idf
Finite Paths Finite
Correlation
1 -0.7869 0.17%
2 -0.5357 1.45%
3 -0.1271 47.12%
4 -0.1430 78.45%
5 -0.1627 88.72%

#### Corrected Table 4.2 (page 37)

Entropy
Finite Paths Finite
Correlation
1 -0.8099 0.18%
2 -0.5888 0.95%
3 -0.1840 29.97%
4 -0.1483 69.49%
5 -0.1638 81.24%

#### Corrected Table 4.3 (page 38)

GfIdf
Finite Paths
Correlation Finite
1 -0.8050 0.17%
2 -0.6771 0.88%
3 -0.1735 29.49%
4 -0.1544 69.78%
5 -0.1820 84.30%

#### Section 5.3 (pages 42 to 43)

The conclusion in Section 5.3 `Which Method Is Best' is withdrawn.
These corrections do not affect the concept of the type of evaluation.

### Further Work

The IP&M paper
I wrote with Bob Webber and Jean Tague-Sutcliffe is mostly about the
concept of using a graph to evaluate hypertext link quality.