In order to use a sizing unit other than SLOC in the SLIM tools, you must assign a gearing factor. For function points, gearing factors are discussed here. In this article, QSM's Andy Berner addresses ways of choosing a gearing factor for story points.
This article continues the focus from the previous article on determining size in a consistent enough manner across multiple products, projects, and agile teams so that you have good historical data on which to base an estimate. QSM's Andy Berner looks at other sizing units besides story points, in particular function points and source lines of code.
In this article for IFPUG's Metric Views, Carol Dekkers and Joe Madden suggest a new way to repurpose function points to achieve software project estimating successes today.
This paper by QSM Consultant Carol Dekkers seeks to marry International Function Point Users Group (IFPUG) definitions with equivalent concepts in agile/iterative processes so as to create a basis for consistent comparison.
This study looks at the QSM software project database and examines a set of validated projects counted in function points that have completed since the year 2000 to see what they tell about productivity, schedule, and staffing.
How can I possibly estimate the size of something I’ve never done before?
The modern computing environment poses many challenges. Foremost among them is addressing totally new technologies. Trying to figure out how “big” computer programs are has challenged software engineering since its inception and is further complicated by the aforementioned dynamic nature of technology.