data mining concepts and techniques ppt
Data Mining Concepts and Techniques phần 1 potx
Ngày tải lên :
08/08/2014, 18:22
... Foundations of Data Mining 665
11.3.2 Statistical Data Mining 666
11.3.3 Visual and Audio Data Mining 667
11.3.4 Data Mining and Collaborative Filtering 670
11.4 Social Impacts of Data Mining 675
11.4.1 ... object-relational databases and
specific application-oriented databases, such as spatial databases, time-series databases,
text databases, and multimedia databases. The challenges and techniques of mining ... Reference Data in Enterprise Databases: Binding Corporate Data to the Wider World
Malcolm Chisholm
Data Mining: Concepts and Techniques
Jiawei Han and Micheline Kamber
Understanding SQL and Java...
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Data Mining Concepts and Techniques phần 2 ppsx
Ngày tải lên :
08/08/2014, 18:22
... 97
2.7
Summary
Data preprocessing is an important issue for both data warehousing and data mining,
as real-world data tend to be incomplete, noisy, and inconsistent. Data preprocessing
includes data cleaning, ... approximation of the original data.
PCA is computationally inexpensive, can be applied to ordered and unordered
attributes, and can handle sparse data and skewed data. Multidimensional data
of more than ... 2.3 Data Cleaning 65
2.3.3 Data Cleaning as a Process
Missing values, noise, and inconsistencies contribute to inaccurate data. So far, we have
looked at techniques for handling missing data and...
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Oracle Data Guard Concepts and Administration
Ngày tải lên :
26/10/2013, 22:15
... Physical Standby and Cascaded Remote Physical Standby C-5
C.3.2 Local Physical Standby and Cascaded Remote Logical Standby C-5
C.3.3 Local and Remote Physical Standby and Cascaded Local Logical Standby ... is applied to the standby database.
A standby database can be one of two types: a physical standby database or a
logical standby database. If needed, either type of standby database can assume ... Physical and Logical Standby Databases
■
New Features Specific to Physical Standby Databases
■
New Features Specific to Logical Standby Databases
New Features Common to Physical and Logical Standby Databases
The...
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Oracle9i Data Mining Concepts Release 9.2.0.2 October 2002 Part No. A95961-02 Oracle9i Data
Ngày tải lên :
06/11/2013, 01:15
... SQL/MM for Data Mining. JDM has also influenced these
standards. Oracle9i Data Mining will comply with the JDM standard when that
standard is published.
1.2.2 Data Mining Server
The Data Mining ... viii
Basic ODM Concepts 1-1
1
Basic ODM Concepts
Oracle9i Data Mining (ODM) embeds data mining within the Oracle9i database.
The data never leaves the database — the data, data preparation, ... main components:
■
Oracle9i Data Mining API
■
Data Mining Server (DMS)
1.2.1 Oracle9i Data Mining API
The Oracle9i Data Mining API is the component of Oracle9i Data Mining that
allows users to...
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Tài liệu Concepts and Administration pptx
Ngày tải lên :
17/01/2014, 06:20
... Physical and Logical Standby Databases
■ New Features Specific to Physical Standby Databases
■ New Features Specific to Logical Standby Databases
New Features Common to Physical and Logical Standby Databases
The ... maintains each standby database by transmitting redo data
from the primary database and then applying the redo to the standby database.
Similar to a primary database, a standby database can be ... single-instance
Oracle database or an Oracle Real Application Clusters database.
A standby database can be either a physical standby database or a logical standby
database:
■ Physical standby database
Provides...
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Tài liệu Oracle8i Parallel Server: Concepts and Administration pptx
Ngày tải lên :
17/01/2014, 09:20
... Processing and Parallel Databases 1-15
For optimal performance, configure your system according to your particular
application requirements and available resources, then design and tune the
database and ... Instance Locks
Planning the Use and Maintenance of PCM Locks 15-2
Planning and Maintaining Instance Locks 15-2
Key to Allocating PCM Locks 15-2
Examining Datafiles and Data Blocks 15-3
Using Worksheets ... =
Volume_Parallel
Volume_Original
Parallel Processing and Parallel Databases 1-1
1
Parallel Processing and Parallel Databases
This chapter introduces parallel processing and parallel database technologies. Both
offer...
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Tài liệu OPTICAL COMMUNICATION THEORY AND TECHNIQUES ppt
Ngày tải lên :
20/01/2014, 06:20
... and quadrature field components). Based on
Fig. 2, at spectral efficiencies below 1 b/s/Hz per polarization, 2-PAM (OOK)
and 2-DPSK are attractive techniques. Between 1 and 2 b/s/Hz, 4-DPSK and ... attractive techniques. At spectral efficiencies above
2 b/s/Hz, 8-PSK and 8- and 16-QAM become the most attractive techniques.
Table 2 compares key attributes of direct, interferometric and coherent ... of 2- and 4-DPSK as compared to 2- and
4-PAM. Coherent detection is unique in offering two degrees of freedom per
polarization, leading to outstanding SNR efficiency for 2- and 4-PSK, and still
reasonable...
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Medical Image Processing, Reconstruction and Restoration: Concepts and Methods ppt
Ngày tải lên :
06/03/2014, 12:20
... persuasion that a good understanding of concepts and prin-
ciples forms a necessary basis to any valid methodology and solid
application. It is relatively easy to continue studying and even
designing specialized ... Algorithms, Sensors, and Applications,
edited by Kiyoharu Aizawa, Katsuhiko Sakaue and Yasuhito Suenaga
25. Medical Image Processing, Reconstruction and Restoration: Concepts
and Methods, Jirˇí ... in and pro-
cessed by computers. The reader should realize that, on one hand,
there are many similarities and analogies between the worlds of
continuous and discrete images; on the other hand,...
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Data Mining Classification: Alternative Techniques - Lecture Notes for Chapter 5 Introduction to Data Mining pdf
Ngày tải lên :
15/03/2014, 09:20
... by R1
© Tan,Steinbach, Kumar Introduction to Data Mining 36
Instance Based Classifiers
Examples:
Rote-learner
ã
Memorizes entire training data and performs
classification only if attributes ... to $1M
© Tan,Steinbach, Kumar Introduction to Data Mining 40
1 nearest-neighbor
Voronoi Diagram
© Tan,Steinbach, Kumar Introduction to Data Mining 38
Nearest-Neighbor Classifiers
Requires ... r*
and r
ã
Choose rule set that minimizes MDL principle
–
Repeat rule generation and rule optimization
for the remaining positive examples
© Tan,Steinbach, Kumar Introduction to Data Mining...
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Báo cáo khoa học: "An Empirical Evaluation of Data-Driven Paraphrase Generation Techniques" pptx
Ngày tải lên :
30/03/2014, 21:20
... families of data- driven ap-
proaches that are widely studied and used. More
comprehensive surveys of data- driven paraphrasing
techniques can be found in Androutsopoulos and
Malakasiotis (2010) and Madnani ... identifying, generating, and harvest-
ing phrase- and sentence-level paraphrases (Barzi-
lay and McKeown, 2001; Bhagat and Ravichan-
dran, 2008; Barzilay and Lee, 2003; Bannard and
Callison-Burch, ... corpora and may
also rely on part-of-speech (POS) taggers, chunkers,
parsers, and statistical machine translation tools.
Constructing large comparable and bilingual cor-
pora is expensive and, in...
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