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AI-205 AI & Data

NLP & Sequence Models

Classical and neural NLP as still deployed everywhere: text pipelines, TF-IDF, embeddings, RNN/LSTM models and sentiment systems — with an honest ML-vs-DL comparison so learners know when a 50-line classical model beats a neural one.

B3Practitioner
5modules
33skill atoms
2role journeys
Curriculum

What this course covers.

5 modules, 33 named skill atoms. Expand any module to see them.

1Text Pipelines7 skill atoms
tokenizationnormalizationn-gramsstopword handlingstemming vs lemmatizationcasing & accentsout-of-vocabulary handling
2Vector Representations7 skill atoms
TF-IDFword embeddingssimilaritybag-of-words baselineword2vec & GloVecosine similaritysparse vs dense trade-offs
3Sequence Networks6 skill atoms
RNN/LSTM mechanicswhen sequence mattershidden stategates & memory cellsbidirectionalitypadding & masking
4Sentiment & Classification Lab6 skill atoms
end-to-end builderror taxonomylabel schema designnegation & sarcasm failuresper-class confusion matrixthreshold tuning
5Classical vs Neural Duel7 skill atoms
same splitsame metricverdict memotraining cost comparisoninference latencydata-size crossovermaintainability argument
Where it fits

AI-205 in the role journeys.

This course appears in 2 of our 45 role journeys. Here is what a learner takes immediately before and after it in each.

AI / ML Engineer

Professional stage
AI-204AI-205AI-206

Data Scientist

Professional stage
AI-203AI-205AI-210

Roles this course serves

The capability ladder

This course is authored to band B3.

Every course we run is written to one rung of the CASI ladder, so a plan can be assembled to take a team from where they are to where they need to be.

What do B1–B6 mean?The CASI Capability Ladder — click to expand

Every course targets a band on the CASI Capability Ladder — our six-band proficiency scale, anchored to open standards (O*NET, ESCO, NICE, NIST AI RMF, Bloom's). A band tells you how deep a course goes, and what evidence proves it.

What the learner can doTypical evidence
B1
AwareUnderstands concepts and vocabulary; uses tools with guidance
Knowledge checks
B2
FoundationPerforms standard tasks correctly in familiar contexts
Guided labs, autograded exercises
B3
PractitionerDelivers complete pieces of work independently
Scenario labs, proctored hands-on exams
B4
ProfessionalHandles production-grade complexity, trade-offs and failure modes
Break-fix drills, design defenses
B5
AdvancedEngineers systems end-to-end under constraints; leads others
Rubric-scored capstones, vivas
B6
ExpertSets direction; recognised authority across teams
Portfolio + panel evaluation

A note on B6. Courses in this catalog target B1–B5. B6 is not taught — it is recognised, through a portfolio and a panel, once someone is setting direction for others. Every journey here is built to land a learner at B5.

Next step

Run AI-205 for your team.

This course runs at several lengths depending on how deep you need to go and how much of it your people already have. Tell us who is being trained and we will scope it.

Add it to a training plan Talk to our team Check your team’s level free