论文标题

标准化人口座位指数的平等表示

Standardizing Representation for Equality with a Population Seat Index

论文作者

Zhao, Liang, Tanimoto, Akiko, Lyu, Wenruo

论文摘要

长期以来,比例代表(PR)一直认为是个人在将立法机关的席位分配给子小组中的理想体系。我们观察到PR隐含地假设(标准)代表数与人口成正比,这种情况不再自1820年代以来观察到。为了解决这个问题,我们建议通过明确指定标准功能$ f $来在更广泛的上下文中提出分配问题,以使$ f(p)$是标准的,可能是人口$ p $的代表,其中PR假设$ f(p)\ propto p $ p $。对于这个普遍的分配问题,我们给出了人口座位索引(PSI)$ \ frac {f^{ - 1}(s)} {p} $,以量化个人在为人口$ p $分配$ s $ seacts的贡献中,其中$ f^{ - 1} $是$ f $ $ f $。使用PSI,我们以绝对和相对个人平等的形式得出分配方案。特别是,对于$ s $座位,人口$ p_1,\ ldots,p_k $和标准函数$ f(p)= a + b p^γ$带常数$ a,b,b,γ\ ge 0 $,理想的,可能是子组$ i $ $ a + a + a + a + \ frac \ frac {(s-s-ka)p _ sum {s s-s-ka)p_i^raus的理想,可能是分数的座位。 p_j^γ} $,不是$ \ frac {sp_i} {\ sum p_j} $由pr计算的,该$仅适用于$ a = 0 $,$γ= 1 $。最后,由于现实世界的观察结果表明标准函数$ f \ propto p^γ$,$γ<1 $ $,我们得出结论,PR代表人口较少的亚组中的个体小于人口较多的亚组中的个人。

Proportional representation (PR) has long been believed the ideal system for the equality of individuals in apportioning the seats of a legislature body to subgroups. We observe that PR implicitly assumes the (standard) number of representatives is proportional to the population, a situation no longer observed since 1820s. To address this issue, we suggest to formulate the apportionment problem in a broader context by explicitly specifying a standard function $f$ such that $f(p)$ is the standard, possibly fractional number of representatives for population $p$, where PR assumes $f(p)\propto p$. For this generalized apportionment problem, we give a population seat index (PSI) $\frac{f^{-1}(s)}{p}$ for quantifying the contribution of an individual in assigning $s$ seats to a population $p$, where $f^{-1}$ is the inverse of $f$. With the PSI, we derive apportioning schemes with absolute and relative individual equality. Particularly, for $s$ seats, populations $p_1, \ldots, p_k$, and a standard function $f(p) = a + b p^γ$ with constants $a, b, γ\ge 0$, the ideal, possibly fractional number of seats for subgroup $i$ is $a + \frac{(S-ka)p_i^γ}{\sum p_j^γ}$, not $\frac{Sp_i}{\sum p_j}$ calculated by PR which works only for $a=0$, $γ=1$. Finally, since real-world observations indicate a standard function $f \propto p^γ$ with $γ< 1$, we conclude that PR represents individuals in less populous subgroups less than individuals in more populous subgroups.

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