SWR03-Chase-Simplified Software Estimation - SiSE Trends - PPT

Sep 12, 2026

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An exploration of simplified software estimation that updates the SiSE method by expanding on advancements and trends shaping software cost estimation. The material addresses key challenges driven by requirement volatility and the intangible nature of software scope, contrasting these with practical measurement using Function Point Analysis and IFPUG standards. It then details the SiSE workflow, including action-verb decomposition, sizing, uncertainty range review, historical growth adjustment, and validation. A worked AlertHub case illustrates requirements handling for functional and non-functional sizing.

LanguageEnglish

CategoryPresentations

FormatPDF

Pages17

Reading Time6 min

AccessFree to download

Understanding Software Estimation Challenges

Intangible Nature

Historical Data and Market Imbalance

Function Point Analysis (FPA)

Quantifying Software Size

IFPUG Standards and Accuracy Limits

Simplified Software Estimation (SiSE) Approach to Software Sizing

Action Verbs List

Estimate Program Size

Uncertainty Review

Sum and Adjust

Validate Estimates

SiSE Example: AlertHub

Tailored to Your Needs

Seamless Integration

Trusted Security

SFP Requirements Estimate Sheet

Results (Curtis vs. Carol)

Sim plified Software Estim ation Updated: Advancem ents and By C urtis C hase & C aro l D ek kers, the updated Sim p lified Software Estim atio n (SiS E) m ethod rep resents a software cost estim atio n . This detailed exp lo ratio n into S iS E's advancem ents and trends p rovides insig hts into the software req uirem ents and their cost im plicatio ns . With a focus o n req uirem ents-driven and data-fo unded transparent and effective ap p roach to software sizing , especially within Ag ile develo p m ent enviro nm ents . Understanding Software Estimation Challenges 1 Intangible Nature 2 Software's intangible nature complicates the standardization of requirements, posing a challenge for sizing and cost estimation. Historical Data Comparing against historical data is difficult without standardized articulation of software requirements. 3 Demand & Supply Currently the demand for requirements-driven and data-founded software estimates outweighs the supply. 2 Function Point Analysis (FPA) Quantifying Software Size FPA measures software size by quantifying standardized inputs, outputs, queries, internal and external files. IFPUG Standards The International Function Point Users Group maintains standards for FPA and certifies analysts through rigorous training and testing. Accuracy vs. Limitations While FPA provides accurate measurements, it has limitations, especially for early software requirements with unknown details. Currently, there are fewer than 1,100 certified analysts worldwide and under 100 in the US. 3 Simplified Software Estimation (SiSE) Approach to Software Sizing 1 Action Verbs List Create a list of action verbs to decompose into weighted components based on the SFP method. 2 Estimate Program Size Match action verbs from software requirements to their weighted SFP values to estimate program size. 3 Uncertainty Review Review for uncertainties in sizing and provide a range with justification for each requirement. 4 Sum and Adjust Sum the values and apply historical growth factors to the estimates. 5 Validate Estimates Review the final size estimate for consistency and compare with prior estimates as a cross-check. 4 SiSE Example: AlertHub AlertHub: Your Personalized Notification Platform • In a bustling city, where every moment counts, a team of tech enthusiast created AlertHub, a revolutionary software product designed to keep citizens informed and empowered. 5 SiSE Example: AlertHub Tailored to Your N eeds A lertH ub allows users tocusto m ize their notificatio np references, ensuring they alerts that are truly relevant to their daily lives . W hether it's traffic updates fo r the co m m ute o r weather fo recasts weekend plans, the platfo rm delivers tim ely, perso nalized info rm atio n to keep users info rm ed and p repared . Seamless Integration W ith just a few clicks, users can effo rtlessly set up their A lertH ub acco unt and start receiving notificatio ns via em ail o r d irectly o n their sm artpho nes . The platfo rm 's user-friend ly interface m akes it easy to m anag e user accounts. Trusted Security A lertH ub p rio ritizes user and data security, rob ust encryption p rotocols safeg uard sensitive Users can trust that their data is p rotected , allowing to focus on staying inform ed witho ut wo rrying abo ut their d ig ital footp rint. 6 | ` | PROGRAM NAME: | | AlertHub | 1. SFP Requirements Estimate Sheet | | | | | --- | --- | --- | --- | --- | --- | --- | --- | | | NAME OF ANALYST/ESTIMATOR: | | Curtis Chase | | | | | | | DATE: | | 5/14/2024 | | | | | | | | | | | | | | | Program Software Requirements (Number and Description): | | | Free format comment
column. Examples: | Enter
Action | | SFP Generated Results (Most Likely) | | | NUMBER | REQUIREMENT DESCRIPTION | | Non Functional
Requirement? | Verb 1 | | SFP (1) | Cumulative
SFPs | | 1 | set up the

FAQs

Why are software estimation requirements difficult to standardize?

Software scope is intangible, making it harder to standardize and articulate requirements. This complicates consistent sizing and cost estimation across teams and time.

What does Function Point Analysis (FPA) measure for software sizing?

FPA measures software size by quantifying standardized inputs, outputs, queries, and internal and external files. It relies on IFPUG standards to maintain consistency and analyst certification.

How does the SiSE approach estimate software size from requirements?

SiSE decomposes requirements using an action verbs list tied to weighted SFP values, then reviews uncertainties to provide a justified range. It sums results, applies historical growth factors, and validates the final estimate against prior sizing for consistency.

Sep 12, 2026

Upload by Asher