Ones and Zeros

AI Practitioner Exam Prep -  SL, UL, + TS Abbreviations ARIMA = Auto Regressive Integrated Moving Average  AUC-ROC = Area Under the Curve-Receiver Operating Characteristic ETS = Error, Trend, Seasonal, GLM = Generalized Linear Models, KNN = K-Nearest Neighbors, L = Labeled Data, MAP = Mean Average Precision, SL = Supervised Learning, TF-IDF = Term Frequency-Inverse Document Frequency, UL = Unsupervised Learning,  VAEs = Variational Auto Encoders,  XGBoost = eXtreme Gradient Boosting Abbreviation Problem (LDA) Latent Dirichlet Allocation  -  UL .  NLP.  Dirichlet is a l azy  (so UL)  bible reader that  looks through text (so NLP), finding different topics, and finds the  theme by  associations between topics.  Linear Discriminant Analysis  - << previously defined>> SL Terms (Predictive Models) AUC-ROC  =  SL . in NLP. think AUC is the score, ROC is the trade off.  AUC- R...

  AI Practitioner Exam Prep -  Vectors Abbreviations PCA  =  Principal Component Analysis algorithm Math Terms Dimension  = number of coordinates to plot point in vector math. Almost same as feature.  Feature = attribute of piece of the  data . ex = "age". Almost same as dimension. Vectors = numerical N-dimensional arrays. Ex: X, Y, and Z coordinates if 3-D array. Vector Space = cloud shape of all the points of all of the vectors. Dimensionality Reduction Terms    Linear  D. R. Terms (so only lines or planes)   Linear Discriminant Analysis  -  SL. think event planner  (so SL) doing seating arrangements grouping max space  BETWEEN  groups, while min distance  WITHIN a group). R educes dimensions  to reduce costs. Goal: i mprove class predictability.    PCA  =  UL . think: looks for Patterns, Compressing it ( reducing the dimensions), on the Anonymous data (so UL)....

  AI Practitioner - Classify and Prediction Math Classification  Setup A fisherman named "AI" in a rocky pond named "data" with lots of fish and rocks carries his net that he calls "precision". Classification (SL) Terms "Accuracy"  = % got right.  calcs  correctness in  environment .  %  of (fish  in net  + rocks left in pond) / all.   Clustering  = UL. that auto groups points into segments without needing predefined labels. Confusion Matrix = matrix with all outcomes (accuracy, precision, and recall).   F1 Score  = best fisherman.  harmonic mean of  fish in your net (precision) and not leaving fish behind (recall). good for binary tasks like churn prediction . F1 = 2 x (Precision x Recall) / (Precision + Recall).   best for rocky ponds. False Positive = blaming someone incorrectly so Precision governs Precision  =  calcs  catch  cleanness .  High precision means...

AI Practitioner Exam Prep -  General Abbreviations APIs  =  Application Programming Interfaces,  BI  = B usiness Intelligence dbs  =  databases,  docs  =  documents,  ex  =  example,  GPU  =  Graphics Processing Unit,  IDE  =  Integrated Development Environment,  ISV  = Independent Software Vendor NIST  =  National Institute of Standards and Technology OWASP  =  Open Web Application Security Project PII  = P ersonally Identifiable Info,  SME  =  Subject matter expert . Terms Classification    =  data divided into categories .  Decision trees  =  CASE statement algorithm.  Good for transparency. Hallucination  =  incorrect output but presented as factual. Latency  =  response time (after sent request).  Real-time applications require low latency. Modality  =  th...

AI and Genie copyrighted by Eric Wood in 2026   You rub an old lamp you find and out comes a genie called "AI".  "AI" says he will grant 3 wishes.      1) Your first wish is for a grand house. You don't see the results. Genie says it will be done in 100 years since you did not specify when.       2) Your second wish is to live 100 years later. You seeing flying cars, etc. but no house. You don't see the results. Genie points out that house is microscopic since you did not specify size.    3) Your third wish is to be microscopic. So you enter the house and see that the house is fabulous. Then the cow steps on the house crushing it and kills you. Genie says I probably would have specified that the house is to be indestructible.

  Tax Effects on Hiring Opportunities of Programmers   The most significant U.S. tax change affecting software development companies  is the modification of IRC Section 174, enacted in 2022 (via the 2017 TCJA), which  ended immediate expensing for R&D costs. Companies are now required to capitalize  and amortize software development costs—including engineer salaries—over 5 years  for U.S. research and 15 years for foreign research.    Donald Trump was the President of the United States when the Tax Cuts and Jobs  Act (TCJA) was passed and signed into law on December 22, 2017.  Key Impacts and Recent Developments:   Cash Flow Disruption (2022–2024): The rules created significant tax liabilities  for software companies—even those operating at a loss—by delaying deductions for  software labor costs.   Reversal/Relief (2025): The "One Big Beautiful Bill Act" (OBBBA), enacted on  July 4, 2025, reverses this requir...

  AWS Cert Prep  Cloud Essentials - Product Names Elastic Beanstalk  = deploy, manage, scale  web apps . Sets up infrastructure, load balancing + app health. Lightsail  = think  Lightsail makes Small Businesses soar.  Provides simple, pre-configured VPS hosting  kit  including compute, storage, DBs, and networking for a low, predictable price. No need for Mgmt console. Key features include easy instance setup, built-in firewalls, and load balancing.  virtual private servers, storage, DBs + networking for small biz. Blogs, etc. Outpost  =  hybrid with hardware on premise, but cloud  mgmt . Ground Station  = control  satellites . Device Farm  - for  testing web and mobile apps  across browsers and mobile devices. Route 53  is a  DNS  that does  geographic control   by routing over to edge and to Cloud Front.   Stateless. Restartable .  Route 53 has alias r...