MELVYL ABI DATABASE TELNET STATISTICS
Time period: 04/01/99 through 04/30/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 248 1,132 1,380
Davis 264 8 272
Irvine 377 0 377
Los Angeles 33 505 538
Riverside 249 15 264
San Diego 43 92 135
San Francisco 93 2 95
Santa Barbara 89 46 135
Santa Cruz 95 51 146
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 14 57 71
Other-Network UC n/a 466 466
_______ ______ _____
1,505 2,376 3,881
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 56 199 3,586
2-4 a.m. 21 61 578
4-6 a.m. 17 59 1,886
6-8 a.m. 50 202 2,154
8-10 a.m. 323 998 13,231
10-12 a.m. 649 2,326 30,132
12-2 p.m. 746 2,311 30,196
2-4 p.m. 889 2,946 34,598
4-6 p.m. 490 1,951 25,336
6-8 p.m. 258 908 13,263
8-10 p.m. 258 916 12,438
10-12 p.m. 124 488 7,171
__________ __________ __________ _________________
Total: 3,881 13,365 174,569
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 820 4,207 5,027
Davis 678 10 688
Irvine 1,282 0 1,282
Los Angeles 89 2,220 2,309
Riverside 931 22 953
San Diego 150 301 451
San Francisco 283 7 290
Santa Barbara 236 175 411
Santa Cruz 260 192 452
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 12 173 185
Other-Network UC n/a 1,313 1,313
_______ ______ _____
4,741 8,624 13,365
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,201 55,228 65,429
Davis 7,374 46 7,420
Irvine 14,784 0 14,784
Los Angeles 1,337 36,432 37,769
Riverside 8,594 187 8,781
San Diego 2,051 2,619 4,670
San Francisco 5,288 70 5,358
Santa Barbara 2,824 2,699 5,523
Santa Cruz 2,609 1,435 4,044
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 204 204
Los Alamos 0 0 0
Other - UC 65 2,107 2,172
Other-Network UC n/a 18,415 18,415
_______ ______ _____
55,127 119,442 174,569
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
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 0.3
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 8:57
Average session length (minutes:seconds) 14:48
Longest session recorded (minutes:seconds) 803:13
Average number of searches completed per session 3.4
Retrievals per search - median 9.0
Retrievals per search - average 1309.1
Retrievals per search - standard deviation 10407
Percent of searches completed with 0 results 27.2%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 63.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,705 23.8%
DISPLAY (excluding automatic displays) 23,399 47.7%
BROWSE 99 0.2%
SELECT 7 0.0%
HELP 967 2.0%
EXPLAIN 1,022 2.1%
SET/RESET 1,395 2.8%
SHOW 258 0.5%
ADD ON (AND, OR, AND NOT) 1,659 3.4%
LOGON or LOGOFF 5,156 10.5%
COMMENT 4 0.0%
SAVE 1,975 4.0%
USE 28 0.1%
OTHER 1,508 3.1%
2.1 Article Text
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DISPLAY TEXT commands 2,721
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 415
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 2,655 20.8% 682 25.7% 11 66.8 256.3
TITLE WORD 2,119 16.6% 735 34.7% 9 114.5 1233.8
EXACT TITLE 159 1.2% 72 45.3% 1 22.6 60.5
JOURNAL 614 4.8% 234 38.1% 490 4751.0 13921.7
EXACT JOURNAL 435 3.4% 124 28.5% 647 2696.2 6704.5
SUBJECT 1,569 12.3% 899 57.3% 673 5513.0 11821.3
EXACT SUBJECT 98 0.8% 25 25.5% 428 5700.6 11351.5
KEYWORD 3,799 29.8% 561 14.8% 68 2501.7 18686.1
PUB TYPE 98 0.8% 13 13.3% 87 393.9 1137.9
DATE 359 2.8% 91 25.3% 16 186.2 610.2
ADDED 6 0.0% 0 0.0% 20,028 18601.3 2210.2
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 14 14.0 0.0
GEOGRAPHIC NAME 40 0.3% 3 7.5% 76 912.4 2058.8
SUBJ CATEGORY 23 0.2% 2 8.7% 43 5777.6 11187.9
COMPANY NAME 351 2.7% 86 24.5% 35 1161.3 3646.0
EX COMPANY NAME 38 0.3% 4 10.5% 54 247.2 428.4
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 7 0.1% 2 28.6% 60 796.6 1675.8
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISSN 2 0.0% 1 50.0% 286 286.0 0.0
PERIODICAL 229 1.8% 47 20.5% 9 124.4 1148.7
EXACT PE 79 0.6% 16 20.3% 3 16.7 55.2
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 84 0.7% 14 16.7% 84 1859.1 5483.1
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 1,125 9.7% 321 28.5% 15 206.0 1090.0
Single 10,467 90.3% 2,955 28.2% 38 2081.8 13427.2
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 91 91.9% 26 28.6% 2 6.3 9.1
EXACT SUBJECT 8 8.1% 6 75.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 89.7%
LONG 1.2%
TAGS 0.0%
FIELDS 1.9%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 3.0%
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 34.4%
2. NS command - no next screen 27.3%
3. FIND command with invalid index name 8.5%
4. DISPLAY command contains invalid word 4.5%
5. PS command - no previous screen 3.7%
6. Valid command at an inappropriate time 2.3%
7. Search term missing from search command 1.6%
8. Add-on search, no index name after verb 1.5%
9. Command contains escape or arrow key 1.4%
10. DISPLAY command - no FIND results 1.2%
11. All others 13.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 17.1%
2. LOCATE (ARTICLE DBS) 14.5%
3. FIND (ABI DB) 10.9%
4. INDEXES (ABI DB) 7.8%
5. COMMANDS (ABI/PSY DBS) 6.8%
6. Unrecognized term 5.4%
7. MAIL 5.2%
8. DISPLAY (ABI DB) 2.2%
9. ADDON SEARCH 2.2%
10. ABI/INFORM DB 2.1%
11. All others 25.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.8%
2. First word of command is invalid 13.8%
3. FIND command with zero results 7.0%
4. FIND command with invalid index name 6.7%
5. DISPLAY command-first of >1 screen 6.0%
6. DISPLAY command - middle of >1 screen 5.6%
7. DISPLAY command-complete in one screen 5.0%
8. FIND command retrieves >1 book 4.4%
9. DISPLAY command - last of >1 screen 3.6%
10. NS command - no next screen 2.3%
11. All others 23.9%
Ten most frequent SHOW requests:
1. HISTORY 40.9%
2. SEARCH 29.4%
3. MAIL STATUS 12.3%
4. SETTINGS (ABI DB) 4.7%
5. PUBLICATION TYPES (ABI DB) 2.6%
6. GLOSSARY 2.6%
7. MAIL SETTINGS 2.6%
8. ABI NEWS 1.3%
9. LIBRARY NEWS 0.9%
10. DISPLAY 0.9%
11. All others 2.1%