remove dependence on IPython ipcluster, convert to serial process
remove dependence on IPython ipcluster, convert to serial process

nikken1/patentprocessor,nikken1/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor