Search for tag: "inf2-fds"

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FDS-S2-05-1-3 Data and code management duration 9 minutes 14 seconds FDS-S2-05-1-3 Data and code management FDS-S2-05-1-3 Data and code management	FDS-S2-05-1-3 Data and code management We discuss the differing management requirements of data and code. inf2-fds control notebook jupyter versions column things lecture problem notebooks functions issues json format bit repository lot systems markdown package packages From David Sterratt 0 likes 229 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Language English Date Created February 7th, 2021
FDS-S2-05-1-2 Notebooks versus programs duration 11 minutes 45 seconds FDS-S2-05-1-2 Notebooks versus programs FDS-S2-05-1-2 Notebooks versus programs	FDS-S2-05-1-2 Notebooks versus programs We will think about the pros and cons of notebooks versus programs inf2-fds notebooks notebook jupiter analysis mathematica function problem sort programming bit module functions gene things server thing figures jupyter programme text From David Sterratt 0 likes 240 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Language English Date Created February 7th, 2021
FDS-S2-05-1-1 Reproducible research duration 15 minutes 55 seconds FDS-S2-05-1-1 Reproducible research FDS-S2-05-1-1 Reproducible research	FDS-S2-05-1-1 Reproducible research We discuss reproducible research, the motivation for aspects of software engineering practices in data science. inf2-fds tests repositories repository authors thing problem disc science packages pandas coronavirus 990s barriers things graph experiment computer notebooks table columns From David Sterratt 0 likes 273 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Language English Date Created February 7th, 2021
FDS-S2-02-1-4 Issues in A/B testing duration 6 minutes 56 seconds FDS-S2-02-1-4 Issues in A/B testing FDS-S2-02-1-4 Issues in A/B testing	FDS-S2-02-1-4 Issues in A/B testing We discuss the issue of statistical versus practical significance, think a little about the ethics of A/B testing, and situate A/B testing in the wider class of statistical inference from 2 samples. inf2-fds testing lot distributions samples participants experiment ab difference button effect methods temperature tests groups semester variable investigations topic bit users From David Sterratt 0 likes 289 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial Language English Date Created January 28th, 2021
FDS-S2-02-1-3 Large sample theory of A/B testing duration 10 minutes 44 seconds FDS-S2-02-1-3 Large sample theory of A/B testing FDS-S2-02-1-3 Large sample theory of A/B testing	FDS-S2-02-1-3 Large sample theory of A/B testing We work through how to apply large-sample theory to A/B testing. inf2-fds hat variance error minus standard estimator confidence expression b. interval estimate difference equation things parameter proportions sense alpha numbers population From David Sterratt 0 likes 324 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial Language English Date Created January 28th, 2021
FDS-S2-02-1-2 Increasing certainty in A/B testing duration 5 minutes 26 seconds FDS-S2-02-1-2 Increasing certainty in A/B testing FDS-S2-02-1-2 Increasing certainty in A/B testing	FDS-S2-02-1-2 Increasing certainty in A/B testing We look at how to obtain more precise and estimates in A/B testing - and how to avoid some pitfalls. inf2-fds afternoon confidence button monday interval proportion times bit sample wednesday simulations numbers morning test bootstrap clickthrough difference webpage testing result From David Sterratt 0 likes 315 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial Language English Date Created January 28th, 2021
FDS-S2-02-1-1 principle of A/B testing duration 12 minutes 13 seconds FDS-S2-02-1-1 principle of A/B testing FDS-S2-02-1-1 principle of A/B testing	FDS-S2-02-1-1 principle of A/B testing We explain the principle of A/B testing, and how to derive confidence intervals for the difference in population proportions using the bootstrap. inf2-fds b. testing button minus times distribution a. bootstrap hat estimate parameters proportion difference estimators confidence method result chance estimates star From David Sterratt 0 likes 377 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial Language English Date Created January 28th, 2021
FDS-S2-01-2-5 Maximum likelihood estimation of… duration 18 minutes 31 seconds FDS-S2-01-2-5 Maximum likelihood estimation of… FDS-S2-01-2-5 Maximum likelihood estimation of logistic regression coefficients	FDS-S2-01-2-5 Maximum likelihood estimation of logistic regression coefficients We introduce the principle of maximum likelihood, and show how to derive the likelihood as a function of the coefficients for logistic regression. We also mention one topical application of logistic… inf2-fds beta log likelihood probability regression term failure function i. success sum naught principle coefficients point respect x. dataset equals thing From David Sterratt 0 likes 338 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial No Derivatives Language English Date Created January 20th, 2021
FDS-S2-01-2-4 The logistic regression classifier duration 11 minutes 17 seconds FDS-S2-01-2-4 The logistic regression classifier FDS-S2-01-2-4 The logistic regression classifier	FDS-S2-01-2-4 The logistic regression classifier We show how to make a logistic regression classifier, and, in the context of ethics, consider how transparent logistic regression can be made to people whose lives it affects. We also compare… inf2-fds regression log boundary probability credit decision classifier neighbours odds neighbour income ratio variables algorithm score customers approval beta linear age From David Sterratt 0 likes 324 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial No Derivatives Language English Date Created January 20th, 2021
FDS-S2-01-2-3 Multiple logistic regression and… duration 10 minutes 14 seconds FDS-S2-01-2-3 Multiple logistic regression and… FDS-S2-01-2-3 Multiple logistic regression and confidence and intervals	FDS-S2-01-2-3 Multiple logistic regression and confidence and intervals We extend logistic regression to multiple independent variables, and show how we can use the boostrap to estimate confidence intervals for coefficients, and to test hypotheses. inf2-fds odds beta regression hypothesis bootstrap intervals age confidence ratio hat method log credit coefficients coefficient variables fact statistic 95th dataset From David Sterratt 0 likes 365 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial No Derivatives Language English Date Created January 20th, 2021
FDS-S2-01-2-2 Interpretation of logistic… duration 16 minutes 50 seconds FDS-S2-01-2-2 Interpretation of logistic… FDS-S2-01-2-2 Interpretation of logistic regression coefficients	FDS-S2-01-2-2 Interpretation of logistic regression coefficients We look at the meaning of logistic regression coefficients, relating them to odds, log odds and odds ratios. inf2-fds odds probability log success minus failure function hat regression ratio nought law interpretation peter locket point factor variable credit beater From David Sterratt 0 likes 383 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial No Derivatives Language English Date Created January 19th, 2021
FDS-S2-01-2-1 Principle of logistic regression duration 17 minutes 50 seconds FDS-S2-01-2-1 Principle of logistic regression FDS-S2-01-2-1 Principle of logistic regression	FDS-S2-01-2-1 Principle of logistic regression We introduce the principle of logisitc regression, illustrating its application to a credit approval dataset. We also introduce the concepts of odds and odds ratios. inf2-fds regression odds probability beta approval success x. age variable function coefficients variables credit ratio minus curve classification naught linear times From David Sterratt 0 likes 458 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial No Derivatives Language English Date Created January 19th, 2021
FDS-S2-01-1-4 Issues in hypothesis testing duration 10 minutes 55 seconds FDS-S2-01-1-4 Issues in hypothesis testing FDS-S2-01-1-4 Issues in hypothesis testing	FDS-S2-01-1-4 Issues in hypothesis testing We consider 3 issues in hypothesis testing: Type I and Type II errors; cherry-picking, p-value hacking etc., and a short discussion about the possibility that hypothesis-driven research can hinder… inf2-fds hypothesis error region rejection testing gorilla test errors dataset students experiments values hypotheses steps mass body 1a size probability topic From David Sterratt 0 likes 328 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial No Derivatives Language English Date Created January 18th, 2021 Retain Source File Yes
FDS-S2-01-1-3 Goodness-of-fit duration 23 minutes 10 seconds FDS-S2-01-1-3 Goodness-of-fit FDS-S2-01-1-3 Goodness-of-fit	FDS-S2-01-1-3 Goodness-of-fit We'll extend the previous example to a one-way contingency table with multiple categories, in which the chi-squared "goodness-of-fit" statistic is used. We then extend it further to a… inf2-fds distribution chi dot statistic population test hypothesis females categories disparity category numbers groups totals freedom fit difference thing panels males From David Sterratt 0 likes 435 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial Language English Date Created January 17th, 2021
FDS-S2-01-1-2 P-values duration 17 minutes 41 seconds FDS-S2-01-1-2 P-values FDS-S2-01-1-2 P-values	FDS-S2-01-1-2 P-values We introduce P-values, an important but tricky concept in hypothesis testing inf2-fds values hypothesis distribution naught bit probability statement simulations level rejection incompatibility binomial point topic truth chance points paper model definition From David Sterratt 0 likes 451 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial Language English Date Created January 17th, 2021
FDS-S2-01-1-1 Principle of hypothesis testing duration 15 minutes 28 seconds FDS-S2-01-1-1 Principle of hypothesis testing FDS-S2-01-1-1 Principle of hypothesis testing	FDS-S2-01-1-1 Principle of hypothesis testing We introduce the principle of hypothesis testing inf2-fds hypothesis test distribution rejection statistic region jury testing regions panel chocolate model bit concept probability point population method selection control From David Sterratt 0 likes 522 plays 0 Course Code INFR08030 Publisher David Sterratt Licence Type Creative Commons - Attribution Non Commercial Language English Date Created January 17th, 2021