Wiki:Change Log

This page records notable additions and edits to the wiki. Maintained by TARS (the WFMWiki engine) and editors.

Date	Page	Change	Editor	Notes
2026-08-12	Cross-Training and Skill Mix Strategy, Resource Optimization Center (ROC)	Hygiene repair	TARS	Repaired two split-heading defects caused by earlier automated insertion passes writing into the middle of a heading line rather than after it. On Cross-Training a cross-link pass turned == See Also == into == See / Also == with a bullet wedged between, orphaning the whole See Also list; on ROC an image pass split ===== See Also ===== after three characters and left the File link fused to the heading marker. Both render as broken sections and neither is detectable by link checking, since the links themselves are valid. Full sweep of all 804 mainspace pages for headings that do not close on their own line returned these two and no others
2026-08-12	Chaining and Flexibility Design	New article	TARS	Chain topology as distinct from the cross-training investment decision: the loop must close, so cross-training conducted inside each business unit builds disconnected short chains and forfeits most of the benefit — the highest-value edges in a merged estate are the boundary-crossing ones nobody proposes. Adds work decomposition as the precondition for chaining a long-proficiency role, and the placement of automated capacity inside the graph rather than outside it: deflection removes a node and leaves a sparser, more specialised residual, while chained automation adds a high-degree node with near-zero ramp. Argues triage is the highest-value chained scope on topological grounds — work usually enters the graph at the wrong node, every mis-entry costs a transfer across two nodes, and realised flexibility therefore sits well below designed flexibility for reasons that further cross-training cannot fix. Cautions carried: triage error propagates, the frontier is jagged (Dell'Acqua), and emotional load is a routing dimension distinct from topic (Wang et al.). Grounded in Jordan-Graves, Wallace-Whitt, Bassamboo-Randhawa-Van Mieghem, Simchi-Levi-Wei. Complements Cross-Training and Skill Mix Strategy, which covers the skill-graph data model and training economics; no prior coverage of chaining on 801 live pages
2026-08-12	Wiki:Packs/Leadership Transition Planning for Workforce and Supplier Operations	Pack update	TARS	CP-WFM-005 v1.1. Added the-workstream-spine.md as Block 7, which demotes the four quadrants from the document's chapter structure to a classification tag and organises the plan by workstream across horizons instead. Three failures of a quadrant spine are named — the BAU chapter becomes a dumping ground for activity when BAU is a commitment that nothing degrades; cross-cutting work gets told four times in four registers; and sequence, which is what the leader above is reading for, disappears entirely. Adds the action inventory as a first-class output (in-flight items that gate discovery, tracked separately from workstreams, and the part of a plan a boss can most easily help with), the rule that every quick win names the roadmap branch it is the first increment of, and three weighting rules that stop a multi-year route reading as "nothing for three years" — under-weight in space not substance, lead with the increment, never state a destination without its near-term branch
2026-08-12	Wiki:Packs/Demand Variance Decomposition, Doubly Stochastic Arrivals and Demand Variance Decomposition	Pack update + article section	TARS	CP-WFM-006 v1.1. Added runbook.md as Block 4 so the test is executable rather than only explicable: SQL extract with a lateral join selecting the last forecast vintage at or before the lock horizon, Python reference implementation for dispersion (blocked to keep trend out of the randomness estimate), the three-way split with bias decomposed out, the regime ratio, the out-of-sample bake-off and the workload extension, plus a nine-item execution checklist. Article gained a "Running the test" section giving the eight steps in execution order and flagging that only the bake-off needs modelling. Routing updated so an analyst is sent to the runbook and a decision-maker to the method
2026-08-12	Doubly Stochastic Arrivals and Demand Variance Decomposition	New article	TARS	Method page splitting observed arrival variability into Poisson noise (irreducible), explained rate variation (what forecasting buys) and residual rate variation (what only elasticity meets). Rests on two identities: Var(N)=E[Λ]+Var(Λ), and E[(N−F)²]=E[Λ]+E[(Λ−F)²] — so residual rate variance = MSE − mean, and a forecast whose MSE equals the interval mean is already perfect. Adds the recoverable/irreducible split via out-of-sample bake-off, the regime test (rate-uncertainty buffer scales linearly in volume, so consolidation stops rescuing the operation above a residual CV of roughly 5% at 400/interval), the horizon-resolution curve mapped to lever lead times, and the workload extension where the volume–AHT correlation term dominates in disruption. Grounded in Jongbloed-Koole, Brown et al., Avramidis-Deslauriers-L'Ecuyer, Kim-Whitt, Steckley-Henderson-Mehrotra, Ibrahim-L'Ecuyer, Bassamboo-Randhawa-Zeevi. Builds on Poisson Process in Contact Centers rather than duplicating it; no prior coverage of overdispersion or variance decomposition on 801 live pages
2026-08-12	Wiki:Packs/Demand Variance Decomposition	New pack	TARS	CP-WFM-006. One instruction block plus four reference blocks — data requirements and intake gates, the decomposition method with worked arithmetic, validity traps and preconditions, and the results/reporting template. Derived from the variance decomposition article. Inert without data by design: Block 2 is written to be read before the extract is requested, because a loose request returns daily aggregates and revised forecasts, either of which silently invalidates the analysis
2026-08-12	Supply Elasticity in Workforce Planning	New article	TARS	Anchor concept for the demand-supply matching model: the marginal value of forecast accuracy is bounded by the elasticity of the supply it informs. Sets out the ceiling, then the two directions that raise it — distributional/simulation demand modelling (Probabilistic Forecasting, staffing to percentile, Monte Carlo/DES) and dynamic supply reallocation (real-time thresholds, chaining, skill-based routing) — and the composition limit both reach: a uniformly full-time, experienced pool has a fixed hours envelope, FTE-coarse granularity and ramp-gated growth, which makes staffing-model design the binding capacity lever. Chaining and alternative staffing models presented as complements: a chained two-skill scope is what makes part-time, contingent and returner supply viable against the proficiency bar. AI framed as an elasticity intervention via time-to-proficiency compression rather than as a deflection lever, with the jagged-frontier and Alibaba quality limits stated. Grounded in Bassamboo-Randhawa-Zeevi, Koçağa-Armony-Ward, Jordan-Graves, Wallace-Whitt, Bassamboo-Randhawa-Van Mieghem, Kim-Krishnan-Argote, Arlotto-Chick-Gans, Ren-Zhou, Brynjolfsson-Li-Raymond, Noy-Zhang, Dell'Acqua et al., Wang et al. No prior page covered supply elasticity; confirmed against 801 live mainspace pages
2026-08-05	Performance-Based Vendor Allocation Design	New article	TARS	How to design a mechanism that allocates work across BPO vendors on measured performance. Case-mix adjustment with a randomized-slice validity check; behavioral resolution and cost-per-resolved-unit; why volume allocation is a strong strategic and weak incentive instrument; softmax share formulation with derived guardrails; oscillation control under measurement-actuation delay. Grounded in provider-profiling risk adjustment (Ash/COPSS, Iezzoni), bad-control econometrics (Rosenbaum, Angrist-Pischke), value-added bias testing (Chetty), multitask agency (Holmstrom-Milgrom), bullwhip dynamics (Lee). Fills a gap confirmed against 567 live pages; first of four from the WFM practice-content reconciliation
2026-08-01	Wiki:Skills, Wiki:Skills/Conventions, Wiki:Skills/Skill Creator, Template:Claude skill	New section	TARS	Launched the Claude Skill Library in the project namespace: hub with inventory table and domain codes, naming/ID/page-format conventions (CS-DOMAIN-NNN, kebab-case slug, slug + ID redirects), infobox template, and CS-META-001 skill-creator as the reference entry. Skill bodies are presented in <syntaxhighlight lang="markdown" copy> blocks for one-click copy into Claude Code/Claude.ai/Cowork
2026-07-24	Conservation of Labor, Operational Volatility Index (OVIX), AI Leverage Maturity in WFM Teams	Diagrams	TARS	Added lead diagrams to all three: destination decomposition of deflected work; OVIX lead-time vs endogenous alert; L0-L3 durability ladder. Deterministic matplotlib, house style (navy/teal/gold), source script in 02-working/make-diagrams-2026-07-24.py — reruns are byte-stable. All marked illustrative, not measured
2026-07-24	Conservation of Labor	New article	TARS	Planning principle: automation relocates/concentrates knowledge work rather than eliminating it. Hub over the deflection cluster (SDRM, Escalation Tax, Interior Optimum, Value-Based Planning Model). Grounded in Bainbridge ironies-of-automation + Acemoglu-Restrepo reinstatement, Autor, Bessen
2026-07-24	Operational Volatility Index (OVIX)	New article	TARS	Composite 0-10 index scoring external events for demand impact; exogenous sensing vs endogenous threshold alerting; source taxonomy, severity/proximity/recency scoring, vertical-weight matrix, five action bands; signal-tuning section (Simon 1971, Horvitz mixed-initiative, alarm fatigue, signal detection theory); sensing-plus-repertoire with MAP-Elites
2026-07-24	AI Leverage Maturity in WFM Teams	New article	TARS	AI as the planning team's method (vs AI as workforce). L0-L3 durability ladder, scaffolding-over-model (Sculley technical debt), deterministic/probabilistic division of labor, the five-question Traceability Test mapped to NIST AI RMF, orchestration checkpoints (Parasuraman complacency, Dell'Acqua jagged frontier), accountability
2026-07-24	13 pages	Edit	TARS	See Also / Related Concepts backlinks added to the three new pages above (SDRM, Escalation Tax, Interior Optimum, Value-Based Planning Model, Contact Deflection; ROC, Daily ROC Routine, RT Threshold Alerts, External Regressors; AI Scaffolding Framework, AI in WFM, Deterministic vs Probabilistic, GenAI Governance)
2026-07-01	File:Diagram-MAPE-WAPE.png	Image correction	TARS	Replaced with corrected version — fixed garbled MAPE y-axis (non-monotonic 20/10/0/5/0) and nonsense micro-text; clean ascending 0/20/40% axis; old version kept in history
2026-07-01	MAPE WAPE and Forecast Bias	Correction	TARS	Fixed reversed asymmetry in Failure Modes (reader-reported): under-forecast bounded at 100%, over-forecast unbounded; corrected the parenthetical and the follow-on bias direction (MAPE biases toward low forecasts)
2026-06-26	AI as a Usability Layer	New article	TARS	AI as an interface to validated engines (not a replacement); case studies Deepnote (data notebooks) and Mackey (RealNumbers Strategies); 'execute don't speculate' principles
2026-06-26	Cinareo, RealNumbers	Edit	TARS	Added verified founders — Cinareo co-founded by Karen Elliott (CEO) & Dr. Mark Alpern (COO), Toronto 2022, $1M pre-seed; RealNumbers co-founded by Ric Kosiba & Chris Kosiba
2026-06-26	Strategic Workforce Planning	New article	TARS	Hub for long-range/strategic planning: horizon spectrum, outputs, methods, tools & vendors
2026-06-26	RealNumbers	New article	TARS	Strategic CC planning firm (Ric Kosiba); the Strategies platform
2026-06-26	Cinareo	New article	TARS	Cloud capacity/resource-planning platform (1wk–3yr); Erlang X engine; complements WFM
2026-06-26	Anaplan	New article	TARS	Enterprise connected-planning platform; Contact Center Planning application
2026-06-26	Keyrus	New article	TARS	EPM consultancy; co-developer of the Anaplan Contact Center Planning app
2026-06-26	Main Page	Navigation update	TARS	Added "Strategic & Long-Range Planning" vendor grouping
2026-06-26	Main Page	Navigation update	TARS	Moved QStory from Real-Time Automation to WFM Platforms (now a full WFM suite, not an intraday-only/Intradiem-alternative tool); updated descriptor
2026-06-26	QStory	Edit	TARS	Removed the Intradiem comparison section and benchmarking framing (QStory no longer positioned as an Intradiem alternative); cross-vendor comparison now points to Real-Time Automation Platforms Comparison
2026-06-26	QStory	Expansion	TARS	Updated at vendor request: broadened from intraday-only framing to full WFM suite; added Forecasting & Scheduling and a Back-Office Workforce Management section (Work Item Manager/back-office ACD, capacity ID, dynamic work balancing, front/back-office fungibility); sourced to QStory product pages; neutral voice retained
2026-06-24	Blending and Deferred Workload	New article	TARS	Staffing math of blending time-constrained inbound with deferrable work (email/back-office/outbound) into idle troughs; reserve protection; includes diagram (completes the CCmath Erlang v4 blending theme)
2026-06-24	Erlang X	New article	TARS	Retrial + patience queueing model completing the Erlang A/B/C/X family; promoted from a section of the Ger Koole bio; includes diagram (prompted by CCmath Erlang v4 release)
2026-06-24	Erlang Law of Averages	New article	TARS	When average staffing can be derived from average volume (near-linear regime) vs when it breaks; companion/counterpoint to The Flaw of Averages; includes diagram
2026-06-24	CCmath	Expansion	TARS	Added neutral Erlang Engine / "Erlang v4" (2026) note (interpolation, Erlang Law of Averages, blending) + links, sourced to the press release
2026-06-24	Ger Koole	Update	TARS	Linked the bio's Erlang X Model section to the new standalone Erlang X page
2026-06-24	Fractional Agents and Staffing Interpolation	New article	TARS	Interpolating the Erlang curve to a non-integer staffing requirement; the rounding/aggregation decision (round at scheduling, not per interval); includes diagram
2026-06-24	Multi-Skill Pooling and the Double-Counting Trap	New article	TARS	Summing per-skill Erlang requirements double-counts shared agents; pooled requirement is lower (Square Root Staffing / chaining); includes diagram
2026-06-23	Potential Outcomes Framework	New article	TARS	Methods deep-dive: Neyman–Rubin model, Y(1)/Y(0), ATE vs ATT, ignorability/overlap/SUTVA
2026-06-23	Instrumental Variables in WFM	New article	TARS	Methods deep-dive: instruments for unmeasured confounding; relevance/exclusion/independence; LATE; includes DAG
2026-06-23	Difference-in-Differences in WFM	New article	TARS	Methods deep-dive: treated-vs-control change, parallel-trends assumption, staggered-rollout cautions; includes diagram
2026-06-23	Regression Discontinuity in WFM	New article	TARS	Methods deep-dive: cutoff/running-variable designs (sharp & fuzzy); includes diagram
2026-06-23	Propensity Score Matching in WFM	New article	TARS	Methods deep-dive: matching on treatment probability; balance, overlap, measured-confounders-only limits
2026-06-23	Causal Inference in Workforce Management	Expansion	TARS	Added Main-article hatnotes (DiD/IV/RD) linking the new standalone method pages
2026-06-23	d-separation	New article	TARS	Causal toolkit: the formal path rule (chain/fork/collider) behind choosing adjustment sets and testing causal models
2026-06-23	Mediation Analysis in WFM	New article	TARS	Direct vs indirect effects (a×b); which mechanism carries an effect; includes diagram
2026-06-23	Counterfactual Reasoning in WFM	New article	TARS	The ladder's top rung as a standalone: attribution, "would it have happened anyway?", potential-outcomes vs structural framings
2026-06-23	Base Rates and Bayesian Reasoning in WFM	New article	TARS	Base-rate neglect and the false-positive trap in fraud/QA/attrition flagging; natural-frequency tree diagram
2026-06-23	The Flaw of Averages	New article	TARS	Sam Savage's flaw of averages (Jensen's inequality) applied to WFM: staffing for the average interval understates required staffing; conceptual parent of percentile staffing; includes diagram
2026-06-23	Cognitive Biases in WFM Decisions	New article	TARS	Human-judgment companion to the analytical-reasoning cluster: anchoring, recency, action bias, overconfidence, planning fallacy, sunk cost, etc., with WFM manifestations, countermeasures, and debiasing practices
2026-06-23	Selection and Collider Bias in WFM	New article	TARS	DAG extension: survivorship, outcome-conditioned samples, deflection selection, Wald aircraft; conditioning on a collider
2026-06-23	Front-Door Criterion in WFM	New article	TARS	DAG extension: identify effects despite unmeasured confounding via a full mediator; includes diagram
2026-06-23	The Ladder of Causation in WFM	New article	TARS	DAG extension: association → intervention → counterfactual; rung-confusion as the core WFM analytics error
2026-06-23	Feedback Loops and Causal Reasoning over Time	New article	TARS	DAG extension: unroll WFM feedback loops into time-indexed DAGs; time-varying confounding & g-methods; includes diagram
2026-06-22	Causal Diagrams (DAGs) in WFM	New article	TARS	Reasoning-tool front door to causal inference: forks/chains/colliders, the collider trap, backdoor criterion; includes a rendered three-structure diagram
2026-06-22	Causal Inference in Workforce Management	Expansion	TARS	Deepened DAG subsection (three structures + collider trap), added main-article link to Causal Diagrams (DAGs) in WFM
2026-06-21	Regression to the Mean in WFM	New article	TARS	Analytical-reasoning cluster: why coaching the worst / crediting good months / outlier-day reactions mislead
2026-06-21	Goodhart's Law and Metric Gaming	New article	TARS	Analytical-reasoning cluster: proxy metrics, AHT/occupancy/adherence/containment gaming, balanced measures
2026-06-21	Simpson's Paradox in Contact Center Metrics	New article	TARS	Analytical-reasoning cluster: aggregated metrics that reverse at segment level (blended SL, vendor/cohort comparison)
2026-06-21	Signal and Noise in WFM	New article	TARS	Analytical-reasoning cluster: separating actionable signal from routine fluctuation; tampering vs missed signal
2026-06-21	Correlation and Causation in WFM	New article	TARS	Analytical-reasoning cluster: confounding, reverse/spurious correlation; front door to Causal Inference
2026-06-20	Main Page	Navigation update	TARS	Added Privacy Policy footer link — de-orphans the last lonely page (orphan count now 0)
2026-06-20	Klaus	New stub	TARS	AI quality-assurance platform (acquired by Zendesk 2024); resolves red link from Zendesk Contact Center
2026-06-20	CommunityWFM	New stub	TARS	Cloud WFM vendor (acquired by RingCentral 2024); resolves red link from RingCentral RingCX
2026-06-20	Schedule Optimization and Efficiency	Redirect	TARS	Naming variant → Schedule Optimization; clears last content red link (wanted-pages now zero)
2026-06-20	Template:Welcome, Template:User, Template:Information	New templates	TARS	Stubbed UI templates (user/talk welcome boxes, file-description box) — clears remaining UI red links; also flattened the Erlang A double redirect
2026-06-20	Statistical Thinking in WFM	New article	TARS	Common-cause vs special-cause variation (Deming/Shewhart); resolves red link from Autonomous WFM Operations
2026-06-20	Avaya Contact Center	Merge	TARS	Merged duplicate Avaya in (Routing Heritage + WFM Data Interfaces); old title now redirects
2026-06-20	Skills Economy and Credential Stacking	Merge	TARS	Merged duplicate '...for WFM' in (skill-hours capacity planning + continuous-learning sections); old title now redirects
2026-06-20	WFM Labs Risk Score™	Merge	TARS	Consolidated duplicate (fixed heading hierarchy, categories); WFM Labs Risk Score now redirects to canonical ™ page
2026-06-20	Template:Reflist + 3 citation templates	New templates	TARS	Created Reflist, Cite web, Cite book, Short description — restored reference-list rendering across ~31 pages that were showing red links instead of citations
2026-06-20	Square Root Staffing Law	New article	TARS	Classic queueing concept (Halfin–Whitt QED regime, BMR dimensioning); resolves red link from Landmark Papers
2026-06-20	Multiple redirects	Housekeeping	TARS	10 naming-variant/vendor red links redirected to canonical pages (e.g. Forecasting Fundamentals→Forecasting Methods, Verint WFM→Verint Workforce Management)
2026-06-20	11 orphan pages	Housekeeping	TARS	Added inbound "See also" links to de-orphan pages (Deming, Ohno, Csikszentmihalyi, Kosiba, Whitt bios; Vendor Selection Guide; etc.)
2026-05-29	Product Management for Contact Centers	New article	TARS	Product vs project, discovery, roadmap, pilots/POCs, governed innovation
2026-05-29	Build vs Buy and Vendor Governance	New article	TARS	Build-vs-buy framework, vendor governance, third-party risk, lock-in
2026-05-29	Program Governance Risk and Compliance	New article	TARS	Decision rights, RAID risk/issues, compliance-by-design, control-vs-speed
2026-05-29	Process Engineering in Contact Centers	New article	TARS	Workflow simplification, cognitive load, Lean/Six Sigma, process-before-tech
2026-05-29	Main Page	Navigation update	TARS	New "Contact Center Modernization" section (21 pages) + adds to Industry Verticals, Operations Theory, Standards, Leadership
2026-05-29	Fraud Operations	New article	TARS	Fraud servicing, disputes, Reg E/Z timelines, volatile volume, WFM profile
2026-05-29	Recovery Operations	New article	TARS	Post-charge-off recovery, credit lifecycle, FDCPA/Reg F, outbound/dialer profile
2026-05-29	Consumer Finance Contact Centers	New article	TARS	Industry setting: B2B2C, CFPB/FDIC, seasonality, multi-skill servicing
2026-05-29	Cloud Telephony and Carrier Integration	New article	TARS	VoIP/SIP, carrier integration, call control, voice quality; Core Telephony epic
2026-05-29	Intelligent Self-Service	New article	TARS	AI self-service, containment vs success, design principles; Conversational Interactions epic
2026-05-29	Enterprise Data Platform	New article	TARS	Data lake/warehouse/lakehouse, Snowflake, ETL/ELT, governance; CC data foundation
2026-05-29	Business Intelligence and Reporting	New article	TARS	Dashboards/reports, Tableau, governed vs self-service BI, KPI optimization
2026-05-29	Interaction Analytics	New article	TARS	Cross-channel content analysis, sampling-to-100%, QM/VoC/compliance, real-time
2026-05-29	Omnichannel Customer Engagement	New article	TARS	CX hub: multichannel vs omnichannel, channel-of-choice, digital-first, measurement
2026-05-29	Digital Messaging	New article	TARS	Sync/async chat, SMS, messaging apps, co-browse, proactive; concurrency/WFM impact
2026-05-29	Systems Thinking	New article	TARS	Discipline: stocks/flows, feedback, delays, leverage points, archetypes; SAFe principle #2
2026-05-29	Customer Journey Orchestration	New article	TARS	End-to-end journey management; orchestration vs mapping/analytics, NBA relationship
2026-05-29	Enterprise Integration	New article	TARS	Integration epic hub: patterns, APIs, microservices, event-driven, security
2026-05-29	Identity and Access Management	New article	TARS	IAM/SSO: authN/authZ, SAML/OAuth/OIDC, least privilege, CC application
2026-05-29	Agent Desktop	New article	TARS	Unified workspace: tool-switching, CRM-led vs CCaaS-led, embedding, AHT impact
2026-05-29	AI-Powered Support	New article	TARS	Epic hub: augment-vs-automate, capability set, underlying tech, governance
2026-05-29	Agent Assist	New article	TARS	Real-time agent augmentation; functions, pipeline, AHT/FCR/ramp impact
2026-05-29	Automated After-Call Summarization	New article	TARS	AI wrap-up; ACW reduction, accuracy/PII controls, workforce impact
2026-05-29	Next-Best-Action	New article	TARS	Decisioning; unified context, propensity models, fairness/explainability
2026-05-29	OKRs and Benefit Realization	New article	TARS	Objectives & Key Results, benefit realization management, leading/lagging indicators
2026-05-29	Program and Portfolio Management	New article	TARS	Project/program/portfolio, dependencies, critical path, governance, LPM
2026-05-29	Contact Center Modernization	New article	TARS	Pillar page tying the eight CCM epics to the delivery operating model
2026-05-29	Jira Align	New article	TARS	Enterprise agile planning; strategy-to-execution, OKRs, benefit realization
2026-05-29	Jira	New article	TARS	Issue tracking and Agile delivery; epics/features/stories, JQL, reporting
2026-05-29	Scaled Agile Framework	New article	TARS	SAFe operating model: ARTs, PI planning, LPM, WSJF, certification
2026-05-29	Change Management	Redirect created	TARS	→ Change Management in WFM; cross-link passes into CCM + AI clusters