The Myth of The Unique Decomposability : Specializing The Herfindahl and Entropy Measures ?  

Oleh:

Acar, William ; Sankaran, K.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Strategic Management Journal vol. 20 no. 10 (1999), page 969-976.
Topik: MEASUREMENTS; diversity measure; entropy; herfindahl; herfindahl decomposition; specializing measures

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: SS30.4 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

This research note investigates the trend toward in herfindahl index H for measuring industry concertain and the entropy measure E for expressing firm diversity. Examining the "decomposability" of E and H, we show that the professed overriding advantage of the entropy measure with respect to decomposability is not its exclusive preserve : the paper containes a proof that this property is also shared by the herfindahl index. It is also shown that due to its more stable range, the H indes is more versatile with respect to inversion than the E measure. Strategy researchers are thereby cautioned that the current trend toward an increased use of entropy is risky and should be reasessed.

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