MELVYL ABI DATABASE TELNET STATISTICS
Time period: 07/01/00 through 07/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 33 368 401
Davis 54 2 56
Irvine 123 0 123
Los Angeles 9 174 183
Riverside 31 1 32
San Diego 18 54 72
San Francisco 32 0 32
Santa Barbara 12 44 56
Santa Cruz 9 4 13
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 8 9 17
Other-Network UC n/a 204 204
_______ ______ _____
329 861 1,190
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 24 67 901
2-4 a.m. 10 20 36
4-6 a.m. 5 5 111
6-8 a.m. 11 31 553
8-10 a.m. 97 338 1,760
10-12 a.m. 213 671 10,384
12-2 p.m. 217 737 13,669
2-4 p.m. 257 871 11,986
4-6 p.m. 184 586 10,540
6-8 p.m. 62 169 5,140
8-10 p.m. 47 169 5,693
10-12 p.m. 63 275 5,403
__________ __________ __________ _________________
Total: 1,190 3,939 66,176
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 91 1,236 1,327
Davis 167 6 173
Irvine 482 0 482
Los Angeles 60 787 847
Riverside 94 3 97
San Diego 45 195 240
San Francisco 92 0 92
Santa Barbara 29 132 161
Santa Cruz 38 10 48
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 12 13 25
Other-Network UC n/a 445 445
_______ ______ _____
1,110 2,829 3,939
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 995 19,162 20,157
Davis 1,466 41 1,507
Irvine 5,805 0 5,805
Los Angeles 318 21,418 21,736
Riverside 681 0 681
San Diego 270 2,363 2,633
San Francisco 1,079 0 1,079
Santa Barbara 615 2,537 3,152
Santa Cruz 1,124 44 1,168
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 1,062 231 1,293
Other-Network UC n/a 6,963 6,963
_______ ______ _____
13,415 52,761 66,176
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 2.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 10:03
Average session length (minutes:seconds) 16:40
Longest session recorded (minutes:seconds) 692:14
Average number of searches completed per session 3.3
Retrievals per search - median 9.0
Retrievals per search - average 1122.2
Retrievals per search - standard deviation 9802.3
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 72.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,577 24.9%
DISPLAY (excluding automatic displays) 6,945 48.4%
BROWSE 23 0.2%
SELECT 2 0.0%
HELP 201 1.4%
EXPLAIN 243 1.7%
SET/RESET 475 3.3%
SHOW 75 0.5%
ADD ON (AND, OR, AND NOT) 362 2.5%
LOGON or LOGOFF 1,523 10.6%
COMMENT 0 0.0%
SAVE 523 3.6%
USE 7 0.0%
OTHER 431 3.0%
2.1 Article Text
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DISPLAY TEXT commands 497
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 64
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 1
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 1,161 29.5% 224 19.3% 12 54.3 274.5
TITLE WORD 608 15.5% 246 40.5% 8 104.3 334.9
EXACT TITLE 59 1.5% 32 54.2% 107 158.6 441.3
JOURNAL 282 7.2% 90 31.9% 188 2481.5 10682.3
EXACT JOURNAL 102 2.6% 28 27.4% 571 3205.3 7418.7
SUBJECT 281 7.1% 174 61.9% 358 8315.0 21486.8
EXACT SUBJECT 26 0.7% 10 38.5% 3,202 13866.4 32909.6
KEYWORD 1,064 27.1% 156 14.7% 71 2371.5 17190.9
PUB TYPE 16 0.4% 1 6.3% 39 783.3 2323.8
DATE 119 3.0% 27 22.7% 11 536.2 2868.4
ADDED 2 0.1% 0 0.0% 7,954 7954.0 1650.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
COMPANY NAME 62 1.6% 25 40.3% 29 1448.0 4415.9
EX COMPANY NAME 2 0.1% 0 0.0% 393 393.0 285.7
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 3 0.1% 2 66.7% 1 1.0 0.0
ISSN 2 0.1% 2 100% 0 0.0 0.0
PERIODICAL 97 2.5% 10 10.3% 9 443.9 1954.2
EXACT PE 27 0.7% 1 3.7% 8 14.5 20.1
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 17 0.4% 2 11.8% 530 4851.6 5305.8
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 349 9.8% 106 30.4% 7 324.7 2016.5
Single 3,203 90.2% 811 25.3% 29 1737.4 12444.9
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
SUBJECT 23 100% 10 43.5% 30 24.5 24.2
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 89.4%
LONG 2.8%
TAGS 0.1%
FIELDS 1.1%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 31.3%
2. First word of command is invalid 27.8%
3. FIND command with invalid index name 8.5%
4. Valid command at an inappropriate time 5.7%
5. DISPLAY command contains invalid word 5.7%
6. PS command - no previous screen 3.6%
7. DISPLAY command-record numbers too large 2.6%
8. Search term missing from search command 1.7%
9. DISPLAY command - no FIND results 1.1%
10. Max. # of ports to a Z39 db are in use 0.9%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 23.9%
2. FIND (ABI DB) 13.2%
3. INDEXES (ABI DB) 8.2%
4. COMMANDS (ABI/PSY DBS) 5.3%
5. LOCATE (ARTICLE DBS) 4.5%
6. DISPLAY (ABI DB) 4.1%
7. MAIL 3.3%
8. Unrecognized term 3.3%
9. DATABASES 3.3%
10. MAGS TEXT 2.5%
11. All others 28.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.0%
2. FIND command with zero results 9.5%
3. First word of command is invalid 9.0%
4. DISPLAY command-complete in one screen 5.9%
5. FIND command retrieves >1 book 5.2%
6. DISPLAY command-first of >1 screen 5.2%
7. DISPLAY command - middle of >1 screen 5.0%
8. NS command - no next screen 4.7%
9. FIND command with invalid index name 4.3%
10. PS command - no previous screen 3.6%
11. All others 22.7%
Ten most frequent SHOW requests:
1. HISTORY 36.8%
2. MAIL STATUS 17.6%
3. SEARCH 13.2%
4. GLOSSARY 5.9%
5. SYSTEM NEWS 2.9%
6. MAIL SETTINGS 2.9%
7. SC LIST (ABI DB) 1.5%
8. SETTINGS (ABI DB) 1.5%
9. ABI NEWS 1.5%
10. SYSTEM3 NEWS 1.5%
11. All others 14.7%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)