| Summary: | 碩士 === 國立政治大學 === 資訊科學學系 === 100 === During the administrative district adjustment of Taiwan in 2010, three regions conducted the city and county merges. The electoral districts must be redistricted after these merges. There are new issues, related to the merge of city and county, which have seldom being discussed before, namely, the city-county integration, the overpopulation-region effect, and the dominance phenomenon. In this thesis, we will consider these issues as the new principles to be included in electoral districting.
The reason that causes overpopulation-region effect or dominance phenomenon is due to too much of population comes from the same administrative district in the city of county prior to the merge. One could avoid these by dividing the overpopulation borough before carrying out the electoral districting. In order to promote the city and county integration, we give priority to these administrative districts on the junction regions of the original city and county configurations before considering the administrative districts on the non-junction regions. The most constraint principles and greedy algorithms are employed in the actual electoral districting processes. After the first districting, we conduct a region adjustment to comply with the regulations of the Central Election Commission (CEC).
We also proposed the assessment indices that can be used to evaluate the possible effects due to the city-county integration, the overpopulation-region effect, and the dominance phenomenon. Using these indices, one can compare the results of various districting outcomes.
Finally, we illustrated our idea and methods by actually districting the merged region of Kaohsiung city and county. According to our mechanism, we produced six city-county integrated electoral districts where no city-county integrated electoral district was found in the CEC’s districting results. In addition, the districting results produced by our method have better overpopulation-region effect index and better dominance phenomenon index than that announced by CEC.
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