CS240h Final project
The final lab assignment for the class is to undertake a mini research
project of your choice involving Haskell in a group of 1-3 people. At
the end of the term, in addition to the code, you will turn in a short
(4-8 page) paper describing your project. You will also present and
demo your results in a mini-conference held during the class's final
exam period, Thursday, December 15 12:15pm-3:15pm. Lunch will be
provided. Make sure you can attend this final exam, as your group's
presentation will be an important part of your final grade.
If your project overlaps with your research, this is not a problem.
We actually encourage this. However, if your final project overlaps
with a project for another class (including an independent study you
are taking for credit), you must obtain permission from the instructor
of the other class in an email CCed to the CS240h staff mailing list.
Any of the papers or techniques we discuss in class can be used as a
inspiration for a project. Here are a few more specific ideas. This
list will gradually expand as the course staff thinks of more
suggestions. You are by no means limited to the list.
Implement a system that safely incorporates untrusted code through the
extension. There are several possibilities:
You could implement "Haskell@Home"--a generalized version of
as Folding@home and
You could implement a 'bot that executes untrusted code along the
Lambdabot was written before Haskell was typesafe, and as a result
is fairly hairy code and very limited in functionality. Using
type safety you ought to be able to achieve something much cleaner
and simpler, and that provides far more functionality.
Implement some sort of end-user programmable web-site (like
Wikipedia, but for code rather than for information).
Implement an online Haskell REPL environment such as
Try Haskll. Using Safe Haskell
and some of the recent support in GHC 7.3 for data declarations in GHCi
you should be able to provide a far more powerful feature set then
Implement a parser library with a parsec-inspired interface, but
that generates DFA-based parsers.
Add garbage collection for dynamically-loaded code to GHC.
Implement any of the popular Google programming abstractions
(Chubby, Map-reduce, BigTable) or related ideas (such
data storage) in Haskell.
Develop a new generic programming or automatic-instance-generating
system for Haskell, possibly using template Haskell or
haskell-src-exts. This has been done before, but it is not hard to
identify shortcomings of previous approaches that your
implementation could remedy.
Develop an extension to the Haskell language that increases
expressiveness. (For instance, the simple ability to require the
inequality of two type parameters in class instance declarations
would allow all kinds programming techniques that today require the
frowned-upon OverlappingInstances extension.)
Develop a high-level database interface for Haskell.
HaskellDB is one
example of an interesting way to leverage Haskell's type system to
make type-safe SQL queries, but it's a bit hairy. Can you do
something simpler for a no-SQL database? Or build a
object-relational mapping for Haskell?
Implement RAMCloud bindings for Haskell and build an application in
Haskell that takes advantage of RAMCloud's unique performance
Integrate Haskell into a web browser. There are several options for
Implement a GHC back-end for Google's
Develop PPAPI (pepper plugin-api) bindings for Haskell.
Use ghcjs to compile
Haskell's flexibility for programming styles--for instance by
supporting functional reactive programming along the lines of that
Put Haskell into an operating system kernel, and use it to allow
(like SPIN) or
untrusted device drivers.
Develop a Monad with an IO-like interface, but that logs all IO
actions (such as changes to memory or the file system) in such a way
that they can be undone. Hence, the execution of a program built on
this interface can be reversed for debugging or failure recovery
Add vector / SIMD support to GHC. This is a very heavily requested feature
of GHC and is something that is really needed by the community given a lot of
emphasis on parallel programming in Haskell. Here are some links to info about
The basics of this task shouldn't be that hard, especially if you only worry
about supporting GHC's LLVM backend. Providing a nice API to the user though
and then porting packages like
repa would make this a nice project.
Do some work on improving the LLVM
backend of GHC. There are a list of ideas for work that needs to be done
on the LLVM backend
The TYPED research project is building a domain specific language (DSL),
in Haskell, for computing on encrypted data. The DSL is a generic, but
small, language that can target Secure Multiparty Computation (SMC), Fully
Homomorphic Encryption, and other "secure platforms" (which you can help
build). The group is looking to re-implement the DSL to use CloudHaskell
and target additional back-ends (including, but not limited to, SMC with
arithmetic sharing and the Paillier cryptosystem). If you are interested in
a project that combines Haskell, cryptography, and networking contact Deian
Stefan ([first name]@cs.stanford.edu) for more information and arrangements.
A good place to find project ideas are one of these three places: