Automatic extraction of top k pages from the web final
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Transcript of Automatic extraction of top k pages from the web final
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o Introduction
o Literature Survey
o Motivation
o Problem Statement
o Proposed System
o System Architecture
o Mathematical Module
o UML Diagram
o GUI
o System Requirements
o Conclusion
o References
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We proposed the method in which user fires
“Top-k” query and gets multiple links as
output.
Extracting useful information from web is
called as web mining.
System will give user direct top-k list as result
when user fire top-k list as query.
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All data available on web is not in same format
Many times structured -information is available in tabular form. Again the question arises, “is this tabular data is valuable?" Many times the answer is NO. User may get huge tables on web but inside those tables only small amount of information is valuable.
We proposed the method in which user fires Top-K list or any other query, user get multiple links as output
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Most of the information on the web is
unstructured text in natural language, and
extracting knowledge from natural language
text is very difficult. Since some information
on the web exists is the form of structured or
semi-structured. Therefore, we study here
about the information extraction from the top-
k web pages, which describes the top k
instance which is of general interests.
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In proposed system, we can make use of extracted Top-k lists to act as a background knowledge for the system to answer Top-k related queries.
To prepare such knowledge we used a technique to aggregate a number of similar or related lists into a more comprehensive one.
One of the most well known technique is known as Threshold Algorithm.
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Threshold Algorithm utilizes aggregate
functions to combine the scores of the
items in each list and then compute the
Top-k items based on the combined
score.
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Let S, be a system such that,
S = {I, e, In, X,Y, T, fme, DD, NDD, ffriend, MEMshared, CPUCoreCnt, ф}
Where,
S- Proposed System
I- Initial state at T<init> i.e. User enter the query for searching the top k list.
e- End state is schema definition of top k list.
X- Input of System i.e. Query
Y- Output of System i.e. Schema Definition of top k list.
T- Set of serialized steps to be performed in pipelined machine cycle. In a given system serialized steps are search Query, Candidate Picker, Title Classifier, Top k-ranker, etc.
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fme- Main algorithm resulting into outcome Y, mainly focus on success defined for the solution. Threshold Algorithm.
DD- Deterministic Data , it helps identifying the load-store function or assignment function. e.g. i= {return i}. Such function contributes in space complexity. In a given system deterministic data will be title classifier and candidate picker.
NDD- Non Deterministic Data of the system to be solved. These being computing function or CPU time or ALU time function contribute in time complexity. In a given system we need to find time required to find top k list.
Ffriend- Set of user query.
MEMshared- Memory required to process all these operations, memory will allocated to every running process.
CPUCoreCnt- More the number of count double the speed and performance.
Ф- Null value if any.
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Hard Disk – 1 GB
RAM – 256 MB
Processor – Intel Pentium 4 or above
Technology – Core Java
Tools - Netbeans
Operating System – windows xp or above
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Different goals: The goal of previous approaches is to indiscriminatingly extract all lists or tables from a web page, while ours is to extract one specific list from a special kind of page while purging all other lists.
In other systems, Top-k list is chosen from the set of candidate lists which are manually composed. But our system will generate an automatic Top-k list.
No Manual Intervention is required.
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The system solves interesting problem of extracting top-k list from web, which aims at recognizing, extracting and understanding top-k list from web pages.
We would like to conclude that compared to other structure data top-k list are cleaner, easier to understand and more interesting for human consumption and therefore are an important source for data mining and knowledge discovery.
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1. Zhixian Zhang, Kenny Q. Zhu , Haixun Wang, Hongsong Li , “Automatic Extraction of Top-k Lists from the Web”, IEEE , ICDE Conference, 2013, 978-1-4673-4910-9.
2. F. Fumarola, T. Weninger, R. Barber, D. Malerba, and J. Han, “Extracting general lists from web documents: A hybrid approach”, in IEA/AIE (1), 2011, pp. 285-294
3. G. Miao, J. Tatemura, W.-P. Hsiung, A. Sawires, and L. E. Moser, “Extracting data records from the web using tag path clustering”, in WWW, 2009, pp. 98190.
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M. J. Cafarella, E. Wu, A. Halevy, Y. Zhang, and D. Z. Wang, “Webtables: Exploring the power of tables on the web”, in VLDB Auckland, New Zealand, 2008.
Zhixian Zhang, Kenny Q. Zhu , Haixun Wang , Hongsong Li, “A system for Extracting Top-K List from the Web”, KDD'12, August 12-16, 2012, Beijing, China, ACM 978-1-4503-1462-6/12/08.
http://techtrickle.com/new-android-marshmallow-features-to-check-out/
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