Understand The Concept Of Regular Expression Matching

June 23, 2022

Understand the Concept of Regular Expression Matching

Table of Contents

Understand the Concept of Regular Expression Matching

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Instructions

Understand the Concept of Regular Expression Matching

Data Frame with The Massachusetts Counties Program

QUESTIONS

Using str_detect and filter, create a data frame with the Massachusetts counties that contain the letter ‘h’ in their county name.

Using str_detect and filter, create a data frame with the Massachusetts counties that contain the number 2 in their three digit county code.

Using str_replace, remove the word ‘County’ or ‘city’ and the trailing white space after the county name.

Open reading frames (ORF) are sections of DNA that have the potential to code for a peptide/protein. They occur between a start codon ATG and a stop codon (TAA, TAG, or TGA) on the DNA. Write the regular expression that selects the ORF of the DNA sequences provided and returns them and ONLY them (nothing before or after) with str_replace. Note, each row has only one ORF. Understand the Concept of Regular Expression Matching

Take a look at the cheat sheets on R Cheat Sheets. Print some out, even! What are the design elements that you like in these? Reference specific cheat sheets and what works for you in them. Reference specific examples in cheat sheets that DO NOT work for you.

Choose a package you want to look at for your midterm. You don’t need to do anything with it yet. But, sign up here and tell us what package you have chosen and why here. See the midterm handout for more information.

Readings: W&G on Strings, Dates and Times, and Factors
Lecture: Strings and Regular Expressions 1, Strings and Regular Expressions 2
Cheat Sheets: Work with Strings Cheat Sheet

Objective(s): Understand how strings differ from numbers. Learn the basics of string manipulation. Describe the different strategies to clean data full of errors with minimal effort. Process and understand the concept of regular expression matching. Manipulate different date formats and work them into a data map reduce workflow.
Files: Portal Mammal Data with String Problems https://biol355.github.io/Lectures/data/portal_mes…

Understand the Concept of Regular Expression Matching

RUBRIC

Excellent Quality

95-100%

Introduction

45-41 points

The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Literature Support

91-84 points

The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Methodology

58-53 points

Content is well-organized with headings for each slide and bulleted lists to group related material as needed. Use of font, color, graphics, effects, etc. to enhance readability and presentation content is excellent. Length requirements of 10 slides/pages or less is met.

Average Score

50-85%
40-38 points

More depth/detail for the background and significance is needed, or the research detail is not clear. No search history information is provided.
83-76 points

Review of relevant theoretical literature is evident, but there is little integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are included. Summary of information presented is included. Conclusion may not contain a biblical integration.
52-49 points

Content is somewhat organized, but no structure is apparent. The use of font, color, graphics, effects, etc. is occasionally detracting to the presentation content. Length requirements may not be met.

Poor Quality

0-45%
37-1 points

The background and/or significance are missing. No search history information is provided.
75-1 points

Review of relevant theoretical literature is evident, but there is no integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are not included in the summary of information presented. Conclusion does not contain a biblical integration.
48-1 points

There is no clear or logical organizational structure. No logical sequence is apparent. The use of font, color, graphics, effects etc. is often detracting to the presentation content. Length requirements may not be met

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Understand the Concept of Regular Expression Matching

Understand the Concept of Regular Expression Matching