a survey on data mining techniques for gene selection and cancer classification
Data Mining Techniques: For Marketing, Sales, and Customer Relationship Management - Second Edition
Ngày tải lên :
07/04/2014, 11:16
...
demonstrates that, on a technical level, the data mining effort is working and
the data is reasonably accurate. This can be quite comforting. If the data and
the data mining techniques applied ... Typical Operational Business Processes
TYPICAL OPERATIONAL SYSTEM DATA MINING SYSTEM
Operations and reports on Analysis on historical data often
historical data applied to most current data to
determine ... nature of the data mining task,
the nature of the available data, and the skills and preferences of the data
miner.
Data mining comes in two flavors—directed and undirected. Directed data...
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John wiley sons data mining techniques for marketing sales_20 pptx
Ngày tải lên :
21/06/2014, 04:20
...
candidates, link analysis, 333
canonical measurements, marketing
campaigns, 31
capture trends, data transformation, 75
car ownership, house-hold level data,
96
CART (Classification and ... 148
statistical analysis, 146, 148–149
confusion
aggregation and, 48
confusion matrix, 79
data transformation, 28
conjugate gradient, 230
constant hazards
changing over time hazards versus, ... Modeling and Data Mining, 60
Data Preparation for Data Mining, 75
470643 bindex.qxd 3/8/04 11:08 AM Page 619
C
Index 619
calculations, probabilities, 133–135
call detail databases, 37
call-center...
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John wiley sons data mining techniques for marketing sales_2 pptx
Ngày tải lên :
21/06/2014, 04:20
...
TYPICAL OPERATIONAL SYSTEM DATA MINING SYSTEM
Operations and reports on Analysis on historical data often
historical data applied to most current data to
determine future actions
Predictable and ... nature of the data mining task,
the nature of the available data, and the skills and preferences of the data
miner.
Data mining comes in two flavors—directed and undirected. Directed data ... reorganizes, even when database administrators are
on vacation, even when computers are temporarily down, even as laws and
regulations change, and switches are upgraded. If an organization can...
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John wiley sons data mining techniques for marketing sales_4 pdf
Ngày tải lên :
21/06/2014, 04:20
...
calling patterns to California based on data that excludes calls to Los Angeles.
Step Six: Transform Data to Bring
Information to the Surface
Once the data has been assembled and major data ... instance, has an overall classification error rate, but each
branch and leaf of the tree also has an error rate as well.
Assessing Classifiers and Predictors
For classification and prediction tasks, ...
the data such as missing values and categorical variables that take on too
many values, and to bring information to the surface by creating new variables
to represent trends and other ratios and...
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John wiley sons data mining techniques for marketing sales_5 pdf
Ngày tải lên :
21/06/2014, 04:20
... has two parameters, the mean and standard
deviation. The mean is the observed average (5 percent) in the sample. To
calculate the standard deviation, we need a formula, and statisticians have ... projected onto the existing customer
base using available data. Behavioral data can be particularly useful for this;
such behavioral data is typically summarized from transaction and billing ... over time, look at the data by day to get a
feel for the data at the most granular level.
A time series chart has a wealth of information. For example, fitting a line to
the data makes it possible...
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John wiley sons data mining techniques for marketing sales_6 ppt
Ngày tải lên :
21/06/2014, 04:20
... statistical approach in several areas:
■■ Data miners tend to ignore measurement error in raw data.
■■ Data miners assume that there is more than enough data and process-
ing power.
■■ Data ... may mean that two events that seem to happen in one
sequence may happen in another. A database record may have a Tuesday update
date, when it really was updated on Monday, because the updating ... model accuracy and model transparency.
In some applications, the accuracy of a classification or prediction is the only
thing that matters; if a direct mail firm obtains a model that can accurately...
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John wiley sons data mining techniques for marketing sales_8 ppt
Ngày tải lên :
21/06/2014, 04:20
... simulated annealing and hill climbing require many, many
iterations and these iterations are expensive computationally because they
and again for each step.
A better algorithm for training ... 11:36 AM Page 211
7
Artificial Neural Networks
CHAPTER
Artificial neural networks are popular because they have a proven track record
in many data mining and decision-support applications. ... be between –2 and +2
(that is, for most variables, almost all values fall within two standard devia-
tions of the mean). Standardizing variables is often a good approach for neural
networks....
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John wiley sons data mining techniques for marketing sales_12 doc
Ngày tải lên :
21/06/2014, 04:20
... important than others.
A good place to starts is by standardizing all variables so each has a mean of
zero and a variance (and standard deviation) of one. That way, all fields con-
tribute equally ... are
treated to a few pages of local coverage for their area. The editorial zones were
drawn up using data available to the Globe, common sense, and a map, but no
formal statistical analysis. ... mean value from each variable and then divide it by the
standard deviation. This is often called standardization or “converting to
z-scores.” A z-score tells you how many standard deviations...
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John wiley sons data mining techniques for marketing sales_13 docx
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21/06/2014, 04:20
... busi-
ness and available data. The second challenge is technical: finding these start
and stop dates in available data may be less obvious than it first appears.
For subscription and account-based ... statistical background of survival analysis is focused
on extracting every last bit of information out of a few hundred data points. In
data mining applications, the volumes of data are so large ...
constant and hopefully are some function of the initial conditions.
Cox made an assumption that the initial conditions have a constant effect on
all hazards, regardless of the time of the hazard....
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John wiley sons data mining techniques for marketing sales_19 potx
Ngày tải lên :
21/06/2014, 04:20
... queries, although databases are becoming increas-
ingly powerful and able to handle them. On the plus side, databases do take
advantage of parallel hardware, a big advantage for transforming data. ... into a series of data mining tasks and under-
stand the nature of the available data in terms of the content and types of the
data fields.
Formulate the Business Goal as a Data Mining Task
The ... detail data.
The marketing data was already summarized at the customer level and
stored in an easily accessible database system. Getting the call detail data into a
usable form was more challenging....
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Description Data Mining Techniques For Marketing_2 pdf
Ngày tải lên :
21/06/2014, 21:20
... the database
contains a numeric salary field, a continuous attribute, then that might lead to
creation of a feature such as salary < 38,500.
For a continuous variable like salary, a feature ...
the samples and calculating the variance of the combined sample, and one
derived from the between-sample variance calculated as the variance of the
sample means. If the various samples are randomly ... time-series data is a central preoccupation of statistical analysts, so you
might expect there to be a large collection of ready-made techniques available
to be applied to predictive data mining on...
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Description Data Mining Techniques For Marketing_6 pdf
Ngày tải lên :
21/06/2014, 21:20
... together in at least 10,000 transactions, and,
A and C must appear together in at least 10,000 transactions, and,
A and D must appear together in at least 10,000 transactions,
and so on.
Each step ... depending on the layout of the data, the database
engine, and the hardware it is running on. Also, if there is a significant number
of calls in the database, any SQL queries for link analysis ... problems in market basket analysis
and are also a useful means of visualizing market basket data. This product
association graph is an example of an undirected graph. The graph shows that
22.12...
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