MELVYL ABI DATABASE TELNET STATISTICS
Time period: 12/01/01 through 12/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 176 180
Davis 41 0 41
Irvine 60 0 60
Los Angeles 0 70 70
Riverside 2 2 4
San Diego 4 14 18
San Francisco 17 0 17
Santa Barbara 4 12 16
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 1 5 6
Other-Network UC n/a 193 193
_______ ______ _____
133 474 607
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 27 82 1,145
2-4 a.m. 9 22 200
4-6 a.m. 10 25 561
6-8 a.m. 19 44 321
8-10 a.m. 80 196 2,579
10-12 a.m. 118 345 4,949
12-2 p.m. 71 172 1,984
2-4 p.m. 99 326 3,743
4-6 p.m. 59 128 1,710
6-8 p.m. 27 79 610
8-10 p.m. 31 59 1,536
10-12 p.m. 57 375 694
__________ __________ __________ _________________
Total: 607 1,853 20,032
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 2 759 761
Davis 137 0 137
Irvine 174 0 174
Los Angeles 0 171 171
Riverside 4 8 12
San Diego 9 49 58
San Francisco 65 0 65
Santa Barbara 7 43 50
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 398 398
_______ ______ _____
398 1,455 1,853
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 155 4,716 4,871
Davis 670 0 670
Irvine 1,167 0 1,167
Los Angeles 0 2,271 2,271
Riverside 35 184 219
San Diego 3 1,113 1,116
San Francisco 1,102 0 1,102
Santa Barbara 30 624 654
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 53 53
Los Alamos 0 0 0
Other - UC 0 389 389
Other-Network UC n/a 7,520 7,520
_______ ______ _____
3,162 16,870 20,032
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 0.9
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
_________________________________________
Median session length (minutes:seconds) 9:09
Average session length (minutes:seconds) 16:10
Longest session recorded (minutes:seconds) 813:49
Average number of searches completed per session 3.0
Retrievals per search - median 2.0
Retrievals per search - average 596.8
Retrievals per search - standard deviation 5803.4
Percent of searches completed with 0 results 38.8%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 81.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,692 28.5%
DISPLAY (excluding automatic displays) 2,534 42.7%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 28 0.5%
EXPLAIN 46 0.8%
SET/RESET 247 4.2%
SHOW 15 0.3%
ADD ON (AND, OR, AND NOT) 161 2.7%
LOGON or LOGOFF 780 13.2%
COMMENT 0 0.0%
SAVE 280 4.7%
USE 0 0.0%
OTHER 148 2.5%
2.1 Article Text
_________________
DISPLAY TEXT commands 241
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 57
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 820 37.0% 446 54.4% 12 83.6 417.0
TITLE WORD 256 11.5% 93 36.3% 6 97.8 303.5
EXACT TITLE 18 0.8% 7 38.9% 1 9.7 16.8
JOURNAL 63 2.8% 28 44.4% 69 1727.5 6335.0
EXACT JOURNAL 42 1.9% 10 23.8% 60 332.8 720.4
SUBJECT 81 3.7% 32 39.5% 62 1024.9 3188.2
EXACT SUBJECT 10 0.5% 7 70.0% 3,332 3928.7 3277.0
KEYWORD 385 17.3% 59 15.3% 67 2258.6 12824.4
PUB TYPE 19 0.9% 1 5.3% 93 444.0 874.0
DATE 47 2.1% 10 21.3% 6 155.1 562.2
ADDED 360 16.2% 353 98.1% 1 1.0 0.0
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 33 1.5% 6 18.2% 78 214.3 348.6
EX COMPANY NAME 0 0.0% 0 0.0% 0 0.0 0.0
DUNS 1 0.0% 1 100% 0 0.0 0.0
TICKER SYMBOL 1 0.0% 0 0.0% 3 3.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 44 2.0% 6 13.6% 6 29.6 68.4
EXACT PE 34 1.5% 1 2.9% 5 14.4 31.0
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 5 0.2% 0 0.0% 73 887.8 1862.4
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 519 30.9% 386 74.4% 8 175.5 529.8
Single 1,163 69.1% 284 24.4% 17 1016.1 8011.4
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.5%
SHORT 88.1%
LONG 0.6%
TAGS 0.1%
FIELDS 2.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.4%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.3%
Ten most frequent errors:
1. DISPLAY command - no FIND results 49.0%
2. NS command - no next screen 18.9%
3. First word of command is invalid 13.8%
4. FIND command with invalid index name 4.4%
5. DISPLAY command contains invalid word 2.5%
6. DISPLAY command-record numbers too large 1.3%
7. PS command - no previous screen 1.3%
8. Max. # of ports to a Z39 db are in use 0.8%
9. Add-on search, no index name after verb 0.7%
10. Command contains escape or arrow key 0.5%
11. All others 6.8%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 17.4%
2. INDEXES (ABI DB) 10.9%
3. FIND (ABI DB) 10.9%
4. MAIL 10.9%
5. DATE (ABI DB) 8.7%
6. PUBLICATION TYPES (ABI DB) 6.5%
7. MAGS TEXT 4.3%
8. ABI/INFORM DB 4.3%
9. LOCATE (ARTICLE DBS) 4.3%
10. INSPEC BACKFILES 4.3%
11. All others 17.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.7%
2. First word of command is invalid 14.9%
3. FIND command with invalid index name 8.1%
4. FIND command with zero results 6.8%
5. DISPLAY command-first of >1 screen 6.8%
6. DISPLAY command-complete in one screen 5.4%
7. DISPLAY command - middle of >1 screen 4.1%
8. PS command - no previous screen 2.7%
9. 117 2.7%
10. 352 2.7%
11. All others 16.2%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. ABI NEWS 16.7%
3. PSYCINFO LOADING STATISTICS 16.7%
4. ABI LOADING STATISTICS 8.3%
5. MAIL STATUS 8.3%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)