MELVYL ABI DATABASE TELNET STATISTICS
Time period: 01/01/00 through 01/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 54 463 517
Davis 156 6 162
Irvine 160 0 160
Los Angeles 38 175 213
Riverside 57 23 80
San Diego 28 44 72
San Francisco 74 0 74
Santa Barbara 35 90 125
Santa Cruz 46 25 71
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 55 15 70
Other-Network UC n/a 312 312
_______ ______ _____
703 1,162 1,865
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 94 1,622
2-4 a.m. 9 21 132
4-6 a.m. 9 28 395
6-8 a.m. 24 76 694
8-10 a.m. 171 523 10,042
10-12 a.m. 328 873 9,873
12-2 p.m. 309 990 12,156
2-4 p.m. 433 1,138 12,415
4-6 p.m. 272 730 8,729
6-8 p.m. 117 381 7,022
8-10 p.m. 114 374 9,195
10-12 p.m. 63 248 4,902
__________ __________ __________ _________________
Total: 1,865 5,476 77,177
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 151 1,321 1,472
Davis 435 19 454
Irvine 433 0 433
Los Angeles 117 702 819
Riverside 163 191 354
San Diego 72 175 247
San Francisco 230 0 230
Santa Barbara 82 241 323
Santa Cruz 118 100 218
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 50 31 81
Other-Network UC n/a 828 828
_______ ______ _____
1,851 3,625 5,476
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,920 23,484 25,404
Davis 4,818 75 4,893
Irvine 5,083 0 5,083
Los Angeles 752 10,706 11,458
Riverside 1,464 1,612 3,076
San Diego 518 2,018 2,536
San Francisco 5,182 0 5,182
Santa Barbara 781 4,153 4,934
Santa Cruz 1,863 824 2,687
Lawrence Berkeley 0 46 46
Lawrence Livermore 0 119 119
Los Alamos 0 0 0
Other - UC 374 387 761
Other-Network UC n/a 10,998 10,998
_______ ______ _____
22,755 54,422 77,177
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 1.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 8:46
Average session length (minutes:seconds) 13:32
Longest session recorded (minutes:seconds) 179:10
Average number of searches completed per session 2.9
Retrievals per search - median 8.0
Retrievals per search - average 892.8
Retrievals per search - standard deviation 5654.7
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 63.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,964 25.5%
DISPLAY (excluding automatic displays) 8,785 45.2%
BROWSE 5 0.0%
SELECT 0 0.0%
HELP 253 1.3%
EXPLAIN 295 1.5%
SET/RESET 835 4.3%
SHOW 88 0.5%
ADD ON (AND, OR, AND NOT) 512 2.6%
LOGON or LOGOFF 2,261 11.6%
COMMENT 0 0.0%
SAVE 757 3.9%
USE 10 0.1%
OTHER 682 3.5%
2.1 Article Text
_________________
DISPLAY TEXT commands 918
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 200
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 1,447 27.0% 339 23.4% 12 75.8 409.9
TITLE WORD 1,020 19.0% 363 35.6% 4 99.7 670.4
EXACT TITLE 44 0.8% 26 59.1% 1 16.1 34.1
JOURNAL 257 4.8% 104 40.5% 347 3562.7 9895.3
EXACT JOURNAL 178 3.3% 60 33.7% 963 4062.4 8587.5
SUBJECT 373 6.9% 197 52.8% 334 3606.5 11286.3
EXACT SUBJECT 59 1.1% 20 33.9% 345 8412.6 22897.0
KEYWORD 1,522 28.4% 216 14.2% 51 1835.5 8505.7
PUB TYPE 13 0.2% 0 0.0% 151 297.9 383.9
DATE 150 2.8% 34 22.7% 8 221.9 957.5
ADDED 7 0.1% 1 14.3% 6,852 5718.0 2777.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 169 169.0 0.0
GEOGRAPHIC NAME 8 0.1% 0 0.0% 404 1522.8 2712.2
SUBJ CATEGORY 2 0.0% 0 0.0% 8,139 8138.5 6947.3
COMPANY NAME 62 1.2% 16 25.8% 87 1540.0 4070.5
EX COMPANY NAME 12 0.2% 5 41.7% 21 563.3 685.4
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 2 0.0% 2 100% 0 0.0 0.0
ISSN 25 0.5% 7 28.0% 449 630.9 654.0
PERIODICAL 87 1.6% 11 12.6% 5 46.1 297.1
EXACT PE 54 1.0% 8 14.8% 4 8.8 12.3
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 44 0.8% 15 34.1% 281 2475.1 3265.2
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 426 8.7% 119 27.9% 10 374.5 1844.7
Single 4,492 91.3% 1,181 26.3% 23 1376.4 7113.3
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 3 60.0% 1 33.3% 17 16.5 21.9
EXACT SUBJECT 2 40.0% 1 50.0% 21 21.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.1%
SHORT 85.8%
LONG 1.2%
TAGS 0.0%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 4.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 31.9%
2. First word of command is invalid 31.6%
3. FIND command with invalid index name 8.4%
4. DISPLAY command contains invalid word 5.5%
5. Valid command at an inappropriate time 2.6%
6. PS command - no previous screen 2.2%
7. DISPLAY command-record numbers too large 1.5%
8. Add-on search, no index name after verb 1.3%
9. DISPLAY command - no FIND results 1.3%
10. Command contains escape or arrow key 1.0%
11. All others 12.7%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 19.3%
2. FIND (ABI DB) 8.5%
3. LOCATE (ARTICLE DBS) 7.8%
4. ABI/INFORM DB 5.4%
5. INDEXES (ABI DB) 4.7%
6. MAIL 4.4%
7. B154 4.1%
8. PUBLICATION TYPES (ABI DB) 3.7%
9. Unrecognized term 3.1%
10. COMMANDS (ABI/PSY DBS) 2.7%
11. All others 36.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.0%
2. First word of command is invalid 15.3%
3. DISPLAY command-first of >1 screen 8.2%
4. DISPLAY command - middle of >1 screen 6.9%
5. FIND command with invalid index name 6.2%
6. FIND command with zero results 4.7%
7. FIND command retrieves >1 book 3.8%
8. DISPLAY command-complete in one screen 3.1%
9. NS command - no next screen 2.2%
10. Valid command at an inappropriate time 1.8%
11. All others 20.6%
Ten most frequent SHOW requests:
1. HISTORY 30.1%
2. SEARCH 19.3%
3. ABI NEWS 18.1%
4. MAIL STATUS 13.3%
5. SYSTEM NEWS 3.6%
6. PUBLICATION TYPES (ABI DB) 2.4%
7. SETTINGS (ABI DB) 2.4%
8. MAIL SETTINGS 2.4%
9. Z39.50 NEWS 1.2%
10. PSYCINFO NEWS 1.2%
11. All others 6.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)