Tài liệu Data Preparation for Data Mining- P15 doc
Tài liệu Data Preparation for Data Mining- P15 doc
... whole reason for using the best data preparation available—is that data
preparation adds value to the business objective that the miner is addressing.
12.1 Modeling Data
Before examining ... map for the CREDIT data set in Figure 11.31 that carries useful
information. In spite of the apparent perfect predictions possible from the information
enfolded in this da...
Tài liệu Data Preparation for Data Mining- P10 docx
... Series Data
Series data differs from the forms of data so far discussed mainly in the way in which the
data enfolds the information. The main difference is that the ordering of the data ... Preparing series data for modeling, then,
must preserve the nature of the pattern that exists. Preparation also includes putting the
data into a form in which the desired inform...
Tài liệu Data Preparation for Data Mining- P11 pdf
... extracting information from noisy or distorted series data. They have
involved extracting a variety of waveforms from the original waveform that emphasize
particular aspects of the data useful for modeling. ... transform accomplishes this. The second transform subtracts the mean of the
transformed variable from each transformed value, and divides the result by the standard
deviation....
Tài liệu Data Preparation for Data Mining- P12 pptx
... of the survey, rather than data
preparation? Data preparation concentrates on transforming and adjusting variables’
values to ensure maximum information exposure. Data surveying concentrates ... density manifold stability.
But here is where data preparation steps into the data survey. The data survey
(Chapter 11) examines the data set as a whole from many differe...
Tài liệu Data Preparation for Data Mining- P13 pptx
... that, as a rule of thumb for the
minimum amount of data to accept, for mining (as opposed to data preparation) , use at least
twice the number of instances required for a data preparation representative ... a mining tool.”
“Information is contained in variability.” Information, information, information. Clearly,
“information” is a key feature of data preparation. In fact,...
Tài liệu Data Preparation for Data Mining- P14 pdf
... variability of a data set is captured,
entropic analysis forms the main tool for surveying data. The other tools are useful, but
used largely for exploring only where entropic or information analysis ... of the instances can be assembled into a data set, and that data set examined for
similarity to the training data set, but that only tells you that the data set now assemb...
Tài liệu Data Preparation for Data Mining- P16 ppt
... out faster,
which is the technical purpose of data preparation. How does data preparation make the
data easier to work with? Essentially, data preparation removes many of the problems.
This ... unprepared data
shows an 81.8182% accuracy on the test data set (top) and an 85.8283% accuracy
in the test data for the prepared data set (bottom).
12.4 Practical Use of...
Tài liệu Data Preparation for Data Mining- P17 ppt
... mining tools and data modeling tools focus.
The near future will see the development of automated data preparation tools for series
data. Approaches for automated series data preparation ... near future for data preparation includes fully automated information exposure for the
types of data discussed in this book, including series data, and adding thematic,...
Data Preparation for Data Mining- P3
...
The stages of data preparation and what needs to be decided at each stage
The fundamental purpose of data preparation is to manipulate and transform raw data so
that the information content ... of data and the data set, and various ways of
structuring data in order to work with it. Problems that afflict the data and the data set (and
also the miner!) were intr...
Data Preparation for Data Mining- P4
...
Surveying the data
8.
Modeling the data
3.3.1 Stage 1: Accessing the Data
The starting point for any data preparation project is to locate the data. This is sometimes ... considered alone.
Data Set /Data Survey Issue: Well- and Ill-Formed Manifolds
This is really the first data survey step as well as the last data preparat...
Từ khóa: