LiFA2000 is an interactive Windows based research package incorporating smallest space analysis (SSA-I) and multi-dimensional scalogram analysis (MSA-I) programs. LiFA2000 allows the user to analyse a data set using the SSA program (LiFA) and then select variables directly from the results on screen to be used in the MSA analysis (LiMA).


LiFA2000 also allows variables in SSA and cases in MSA to be represented on the plot by labels as well as by numbers allowing immediate, on-screen interpretation of the results.

The system runs with a dynamic menu system. Therefore only those options that the user requires will be available at any stage of the analysis. On selecting the data file that is to be analysed, the user will be prompted to specify:

1) The desired co-efficient:


2) Form of data matrix:



3) Required form of association



4) Number of dimensions



5) Required metric form



6) Required form of fit



(Each of the ticked items in the above menus are the system defaults. By directly selecting Run from the analysis menu the analysis will be conducted using these defaults.)

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Example plot:



The plot can be copied on to the clipboard using the menu options and then pasted into other applications such as a word processor or graphics package. The presentation of labels and results (co-efficient, no. iterations, stress) directly on the output reduces the amount of further presentation work.

After running the SSA analysis the user can then select on-screen a sub-set of variables for an MSA analysis. The MSA program can then be run directly from the SSA program already in use.

By pressing from the Menu icon bar the analysis will be run in 2 dimensions which is the default setting. The user is then notified of any redundant profiles and the coefficient of contiguity,





before being presented with the results of the analysis

The item plots can be displayed in 2 ways



As icons:



As windows




or not at all

All plots can be presented with or without axes or borders by selecting the relevant icons from the toolbar, and respectively. The item plot can then be easily copied onto the clipboard from the option on the toolbar, , or by selecting copy to clipboard from the Export menu. The plot can then be pasted into other Windows applications such as a word processor or graphics package.


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Order here

Click here to place an order for LIFA2000

System Requirements

Computer:
Pentium processor (or equivalent),
Minimum 32Mb RAM,
Graphics card capable of XGA,
Preferably 1024 x 768 pixels
(800 x 600 adequate).


System:
Windows 95, 98, NT 3.51 or 4. The program has functioned within a Win 3.1 env. with Win32S. This is not the recommended env. however and no responsibility can be held to the suppliers for any analytical errors resulting from use within this setting.


The recommended operating systems are Windows NT and 98 for which there are no data matrix limitations. Due to restrictions within Windows 95, LiFA2000 will not produce accurate results for data matrices containing over 2500 cells.


Contact Details

All enquiries should be directed to:

email LiFA2000

Or

LiFA2000,
The Centre for Investigative Psychology,
The University of Liverpool,
Liverpool,
United Kingdom.
L69 7ZA
Phone + 44 151 794 3910
Fax + 44 151 794 3938
email lifa@liverpool.ac.uk





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