Lens provides a number of example networks to give you a convenient reference and some fun toy problems to play with.

If this is your first time using Lens, you will want to explore the...

Feed-Forward Networks | |

xor.in | What simulator would be complete without the old XOR problem? |

digits.in | A very simple digit recognition task. |

hand-digits.in | A real handwritten digit recognition problem. |

bench.in | Used for benchmarking the simulator. Not very interesting. |

encoder.in | Another classic: the encoder network. |

negation.in | The bit negation problem from Vol. 1 of the PDP books. |

pick-one.in | Can the network find the culprit in the crowd? |

t-c.in | The T-C recognition problem from Vol. 1 of the PDP books. |

task.in | A gating network that learns to solve a specified task. |

logic.in | A network that solves boolean formulae with three variables. |

Simple Recurrent Networks | |

filler.in | A memory task. |

filler-srbptt.in | The same task using an SRBPTT network. |

adder2.in | A network that learns to add binary numbers. |

adder10.in | A network that learns to add base-10 numbers. |

sequence.in | A sequence prediction problem. |

rhw-sequence.in | The sequence task from Vol. 1 of the PDP books. |

logic2.in | The network must solve complex, nested boolean formulae. |

recoder.in | Can the network invent a language? |

Fully Recurrent Networks | |

integrate.in | Study the behavior of different types of integrating units. |

rand10x40.in | A feed-forward random mapping task with a continuous network. |

on-off.in | A continuous network that must turn units on and then off. |

Other Networks | |

jets-n-sharks.in | The Jets and Sharks interactive-activation network. |

kohonen.in | A Kohonen self-organizing map (SOM). |

boltz.in | Two simple Boltzmann machines on the digits task. |

boltz-complete.in | A pattern-completion task with Boltzmann machines. |

Douglas Rohde Last modified: Tue Nov 28.31:11:15 EST 2000