---
name: "hfst-optimized-lookup"
section: "1"
platform: "linux"
package: "hfst"
version: "3.16.2-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/hfst-optimized-lookup"
---

# hfst-optimized-lookup(1)

\=Usage: hfst-optimized-lookup \[OPTIONS\] TRANSDUCER

## NAME

hfst-optimized-lookup - =Usage: hfst-optimized-lookup \[OPTIONS\] TRANSDUCER

## SYNOPSIS

**hfst-optimized-lookup** \[*OPTIONS*\] *TRANSDUCER*

## DESCRIPTION

Run a transducer on standard input (one word per line) and print analyses NOTE: hfst-optimized-lookup does lookup from left to right as opposed to xfst

-

  and foma lookup which is carried out from right to left. In order to do lookup in a similar way as xfst and foma, invert the transducer first.

- **-h**, **--help**

  Print this help message

- **-V**, **--version**

  Print version information

- **-v**, **--verbose**

  Be verbose

- **-q**, **--quiet**

  Don't be verbose (default)

- **-s**, **--silent**

  Same as quiet

- **-e**, **--echo**

  Echo inputs (useful if redirecting lots of output to a file)

- **-w**, **--show-weights**

  Print final analysis weights (if any)

- **-u**, **--unique**

  Suppress duplicate analyses

- **-n** N, **--analyses**=*N*

  Output no more than N analyses (if the transducer is weighted, the N best analyses)

- **-b**, **--beam**=*B*

  Output only analyses whose weight is within B from the best analysis

- **-t**, **--time-cutoff**=*S*

  Limit search after having used S seconds per input

- **-x**, **--xerox**

  Xerox output format (default)

- **-f**, **--fast**

  Be as fast as possible. (with this option enabled **-u** and **-n** don't work and output won't be ordered by weight).

- **-p**, **--pipe-mode**\[=*STREAM*\]

  Control input and output streams.

N must be a positive integer. B must be a non-negative float. S must be a non-negative float. The default, 0.0, indicates no cutoff. Options **-n** and **-b** are combined with AND, i.e. they both restrict the output.

STREAM can be { input, output, both }. If not given, defaults to {both}. Input is read interactively line by line from the user. If you redirect input from a file, use **--pipe-mode**=*input*. **--pipe-mode**=*output* is ignored on non-windows platforms.

## REPORTING BUGS

Report bugs to hfst-bugs@helsinki.fi

hfst-optimized-lookup 1.2\
 Aug 22 2018 13:57:15 copyright (C) 2009 University of Helsinki