Computational Biology: Feature Selection, Clustering, and Classification
Cheat Sheet: Computational Biology Final Exam Revision
FEATURE SELECTION
What is feature selection?
Reducing the feature space by removing some of the (non-relevant) features. Also known as:
- variable selection
- feature reduction
- attribute selection
- variable subset selection
Feature selection methods aim at eliminating noisy, redundant, or irrelevant features that may deteriorate the classification performance. In big data mining field of Machine Learning implementation, feature selection plays an important
Read MoreComputer Networks: Protocols, Technologies, and Concepts
Internet Access Technologies
Dial up – phone; DSL – phone line; Cable Internet – TV Network
Delay Calculations
Propagation delay, transmission delay, store-and-forward, Bandwidth-delay product, Bandwidth-RTT product, Dnodal=dproc+dqueue+dtrans+dprop; Dtrans = L/R, L = length, R = bandwidth/rate; Dprop = d/s, d = length, s = propagation speed.
ISO/OSI Reference Model
Seven layers; TCP/IP architecture for the Internet (five layers)
Traceroute/Tracert
3 delay measurements for each router on the way
Read MoreUnderstanding PageRank, DGIM Algorithm, and Hadoop Ecosystem
PageRank Concept
Basic PageRank Formula: PR(A) = (1−d) + d × (C(T1)/PR(T1) + … + C(Tn)/PR(Tn)
Teleporting & Damping Factor
Concept of ‘teleporting’ in random surfer model to avoid issues like rank sinks & spider traps. Damping factor represents the probability that a user will continue clicking on links.
Handling Dead Ends & Spider Traps
Dead ends: Pages with no outbound links, causing ‘leakage’ of PageRank. Spider traps: Pages or groups of pages that only link to each other, trapping
Read MoreUnderstanding Information Systems and Computing
Quiz 1&2
To effectively and efficiently use computers, you need to know the parts of an information system, which include people, procedures, software, hardware, data and the Internet. Here between data and information, the total amount you are paid for the week should be information and the number of hours you worked in a week and your pay rate are data. There are two major kinds of software discussed in Chapter1: system software and application software. Midrange computers are computers with
Read MoreDigital Marketing: Strategies, Elements, and Tools
Marketing is the process by which companies create value for customers and society, resulting in strong customer relationships that capture value from the customers in return.
Digital marketing, also known as online marketing, refers to advertising delivered through digital channels to promote brands and connect potential customers using the internet and other forms of digital communication such as: Search engines. Websites. Social media.
MAIN ELEMENTS OF DIGITAL MARKETING
– User Experience in digital
Java Inheritance and Polymorphism: Examples and Explanation
Single Inheritance Example
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Multilevel Inheritance Example
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Hierarchical Inheritance Example
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Method Overriding
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Abstract Class that has Abstract Method
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Java Package
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Wrapper class Example: Primitive to Wrapper
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Wrapper class Example: Wrapper to Primitive
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Dynamic method dispatch
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