MELVYL ABI DATABASE TELNET STATISTICS
Time period: 03/01/99 through 03/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 209 1,125 1,334
Davis 281 7 288
Irvine 337 0 337
Los Angeles 66 654 720
Riverside 253 11 264
San Diego 44 157 201
San Francisco 141 2 143
Santa Barbara 121 56 177
Santa Cruz 140 86 226
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 23 36 59
Other-Network UC n/a 608 608
_______ ______ _____
1,615 2,754 4,369
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 84 274 6,566
2-4 a.m. 44 196 2,280
4-6 a.m. 21 89 891
6-8 a.m. 78 223 4,131
8-10 a.m. 320 1,021 12,720
10-12 a.m. 779 2,768 32,684
12-2 p.m. 711 2,478 36,315
2-4 p.m. 998 3,403 44,269
4-6 p.m. 596 2,157 32,806
6-8 p.m. 285 1,066 21,585
8-10 p.m. 287 1,062 21,617
10-12 p.m. 166 588 9,982
__________ __________ __________ _________________
Total: 4,369 15,325 225,846
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 668 3,852 4,520
Davis 927 10 937
Irvine 1,040 0 1,040
Los Angeles 199 2,682 2,881
Riverside 977 36 1,013
San Diego 135 564 699
San Francisco 490 13 503
Santa Barbara 661 163 824
Santa Cruz 410 209 619
Lawrence Berkeley 0 17 17
Lawrence Livermore 0 19 19
Los Alamos 0 0 0
Other - UC 47 217 264
Other-Network UC n/a 1,989 1,989
_______ ______ _____
5,554 9,771 15,325
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,185 62,239 71,424
Davis 9,507 75 9,582
Irvine 11,747 0 11,747
Los Angeles 2,037 51,136 53,173
Riverside 11,888 702 12,590
San Diego 1,343 5,972 7,315
San Francisco 7,728 296 8,024
Santa Barbara 5,971 3,823 9,794
Santa Cruz 4,094 1,449 5,543
Lawrence Berkeley 0 420 420
Lawrence Livermore 0 239 239
Los Alamos 0 0 0
Other - UC 304 3,192 3,496
Other-Network UC n/a 32,499 32,499
_______ ______ _____
63,804 162,042 225,846
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 2.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 10:20
Average session length (minutes:seconds) 16:15
Longest session recorded (minutes:seconds) 638:30
Average number of searches completed per session 3.5
Retrievals per search - median 8.0
Retrievals per search - average 1263.3
Retrievals per search - standard deviation 10291
Percent of searches completed with 0 results 27.9%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 61.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 13,681 23.7%
DISPLAY (excluding automatic displays) 29,180 50.5%
BROWSE 104 0.2%
SELECT 16 0.0%
HELP 952 1.6%
EXPLAIN 1,074 1.9%
SET/RESET 1,696 2.9%
SHOW 297 0.5%
ADD ON (AND, OR, AND NOT) 1,640 2.8%
LOGON or LOGOFF 5,772 10.0%
COMMENT 0 0.0%
SAVE 1,816 3.1%
USE 34 0.1%
OTHER 1,684 2.9%
2.1 Article Text
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DISPLAY TEXT commands 3,227
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 375
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 0
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 3,117 20.5% 722 23.2% 12 82.5 525.9
TITLE WORD 2,575 16.9% 901 35.0% 11 195.6 2366.8
EXACT TITLE 278 1.8% 125 45.0% 1 10.6 34.8
JOURNAL 640 4.2% 263 41.1% 584 4710.8 14261.5
EXACT JOURNAL 504 3.3% 174 34.5% 448 3321.8 7217.3
SUBJECT 1,940 12.8% 1,039 53.6% 587 6312.5 21715.9
EXACT SUBJECT 143 0.9% 57 39.9% 76 2418.0 6889.2
KEYWORD 4,400 28.9% 700 15.9% 57 2305.0 15948.9
PUB TYPE 105 0.7% 9 8.6% 79 447.5 1269.6
DATE 502 3.3% 112 22.3% 28 346.6 1655.0
ADDED 5 0.0% 1 20.0% 15,547 12670.3 5753.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 8 0.1% 1 12.5% 74 206.7 219.7
GEOGRAPHIC NAME 44 0.3% 6 13.6% 41 726.0 1829.2
SUBJ CATEGORY 36 0.2% 8 22.2% 1,045 12607.9 31704.4
COMPANY NAME 370 2.4% 113 30.5% 28 340.4 1164.9
EX COMPANY NAME 30 0.2% 7 23.3% 41 412.5 795.9
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 24 0.2% 0 0.0% 1 1.0 0.0
ISSN 33 0.2% 7 21.2% 622 1161.7 1204.1
PERIODICAL 228 1.5% 45 19.7% 7 119.2 396.3
EXACT PE 78 0.5% 9 11.5% 3 16.9 30.3
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 144 0.9% 43 29.9% 107 1032.9 3148.1
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 1,545 11.4% 431 27.9% 16 398.7 2307.9
Single 11,995 88.6% 3,446 28.7% 33 2078.9 13366.8
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 100 96.2% 21 21.0% 4 8.8 11.4
EXACT SUBJECT 4 3.8% 3 75.0% 2 2.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 90.7%
LONG 1.0%
TAGS 0.0%
FIELDS 1.2%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 3.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. First word of command is invalid 31.9%
2. NS command - no next screen 31.6%
3. FIND command with invalid index name 7.8%
4. DISPLAY command contains invalid word 5.8%
5. PS command - no previous screen 4.2%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 1.5%
8. DISPLAY command-record numbers too large 1.3%
9. DISPLAY command - no FIND results 1.1%
10. Add-on search, no index name after verb 1.0%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 18.6%
2. LOCATE (ARTICLE DBS) 12.2%
3. FIND (ABI DB) 10.1%
4. INDEXES (ABI DB) 7.9%
5. MAIL 7.5%
6. COMMANDS (ABI/PSY DBS) 6.4%
7. ABI/INFORM DB 3.6%
8. Unrecognized term 3.1%
9. ADDON SEARCH 3.1%
10. DISPLAY (ABI DB) 2.7%
11. All others 24.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.1%
2. First word of command is invalid 13.1%
3. FIND command with zero results 7.1%
4. FIND command with invalid index name 7.0%
5. DISPLAY command-first of >1 screen 6.6%
6. DISPLAY command-complete in one screen 5.4%
7. FIND command retrieves >1 book 5.3%
8. DISPLAY command - middle of >1 screen 5.1%
9. NS command - no next screen 2.9%
10. PS command - no previous screen 1.8%
11. All others 22.8%
Ten most frequent SHOW requests:
1. HISTORY 42.5%
2. SEARCH 25.0%
3. MAIL STATUS 10.4%
4. MAIL SETTINGS 5.2%
5. SETTINGS (ABI DB) 2.6%
6. ABI NEWS 2.6%
7. GLOSSARY 1.9%
8. SYSTEM NEWS 1.9%
9. DISPLAY 1.9%
10. ABI LOADING STATISTICS 0.7%
11. All others 5.2%