翻訳と辞書 Words near each other ・ Data Nagar ・ Data normalization ・ Data onboarding ・ Data Organization for Low Power ・ Data over signalling ・ Data pack ・ Data Panik ・ Data Panik Etcetera ・ Data paper ・ Data parallelism ・ Data Path Acceleration Architecture (DPAA) ・ Data Plane Development Kit ・ Data point ・ Data pool ・ Data position measurement ・ Data pre-processing ・ Data Privacy Day ・ Data Privacy Lab ・ Data processing ・ Data processing (disambiguation) ・ Data Processing and Analysis Consortium ・ Data processing inequality ・ Data Processing Iran Co. ・ Data processing system ・ Data processing technician ・ Data processing unit ・ Data profiling ・ Data proliferation ・ Data Protection (Jersey) Law ・ Data protection (privacy) laws in Russia Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Data pre-processing ： ウィキペディア英語版 Data pre-processing Data pre-processing is an important step in the data mining process. The phrase "garbage in, garbage out" is particularly applicable to data mining and machine learning projects. Data-gathering methods are often loosely controlled, resulting in out-of-range values (e.g., Income: −100), impossible data combinations (e.g., Sex: Male, Pregnant: Yes), missing values, etc. Analyzing data that has not been carefully screened for such problems can produce misleading results. Thus, the representation and quality of data is first and foremost before running an analysis.〔Pyle, D., 1999. ''Data Preparation for Data Mining.'' Morgan Kaufmann Publishers, Los Altos, California.〕 If there is much irrelevant and redundant information present or noisy and unreliable data, then knowledge discovery during the training phase is more difficult. Data preparation and filtering steps can take considerable amount of processing time. Data pre-processing includes cleaning, normalization, transformation, feature extraction and selection, etc. The product of data pre-processing is the final training set. Kotsiantis et al. (2006) present a well-known algorithm for each step of data pre-processing.〔S. Kotsiantis, D. Kanellopoulos, P. Pintelas, "Data Preprocessing for Supervised Learning", ''International Journal of Computer Science'', 2006, Vol 1 N. 2, pp 111–117.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Data pre-processing」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.