MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/31/01 through 04/06/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 68 191 259
Davis 140 0 140
Irvine 67 0 67
Los Angeles 0 82 82
Riverside 16 36 52
San Diego 11 146 157
San Francisco 64 0 64
Santa Barbara 1 43 44
Santa Cruz 23 25 48
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 12 19 31
Other-Network UC n/a 150 150
_______ ______ _____
402 692 1,094
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 33 861
2-4 a.m. 7 61 664
4-6 a.m. 77 563 1,266
6-8 a.m. 19 42 520
8-10 a.m. 113 346 4,274
10-12 a.m. 167 555 4,700
12-2 p.m. 173 646 6,669
2-4 p.m. 223 777 10,859
4-6 p.m. 160 592 5,865
6-8 p.m. 66 273 4,840
8-10 p.m. 51 218 2,010
10-12 p.m. 26 111 1,810
__________ __________ __________ _________________
Total: 1,094 4,217 44,338
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 304 725 1,029
Davis 735 1 736
Irvine 231 0 231
Los Angeles 0 297 297
Riverside 72 134 206
San Diego 45 507 552
San Francisco 217 0 217
Santa Barbara 1 145 146
Santa Cruz 30 135 165
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 24 38 62
Other-Network UC n/a 576 576
_______ ______ _____
1,659 2,558 4,217
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,340 9,673 13,013
Davis 2,605 0 2,605
Irvine 2,886 0 2,886
Los Angeles 0 4,050 4,050
Riverside 299 1,275 1,574
San Diego 211 6,168 6,379
San Francisco 2,679 0 2,679
Santa Barbara 1 1,881 1,882
Santa Cruz 672 1,332 2,004
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 66 2,675 2,741
Other-Network UC n/a 4,525 4,525
_______ ______ _____
12,759 31,579 44,338
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.1
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 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 7:09
Average session length (minutes:seconds) 12:28
Longest session recorded (minutes:seconds) 209:26
Average number of searches completed per session 3.8
Retrievals per search - median 6.0
Retrievals per search - average 933.2
Retrievals per search - standard deviation 10536
Percent of searches completed with 0 results 27.6%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 70.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,840 29.6%
DISPLAY (excluding automatic displays) 5,629 43.3%
BROWSE 6 0.0%
SELECT 5 0.0%
HELP 79 0.6%
EXPLAIN 85 0.7%
SET/RESET 386 3.0%
SHOW 36 0.3%
ADD ON (AND, OR, AND NOT) 375 2.9%
LOGON or LOGOFF 1,645 12.7%
COMMENT 0 0.0%
SAVE 495 3.8%
USE 3 0.0%
OTHER 412 3.2%
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 1,602 31.3% 331 20.7% 16 56.2 147.9
TITLE WORD 359 7.0% 115 32.0% 13 92.0 240.9
EXACT TITLE 43 0.8% 14 32.6% 1 25.5 48.6
JOURNAL 114 2.2% 37 32.5% 246 2855.5 6161.5
EXACT JOURNAL 44 0.9% 7 15.9% 383 1566.4 2397.1
SUBJECT 264 5.2% 125 47.3% 266 4507.4 10539.0
EXACT SUBJECT 502 9.8% 359 71.5% 2 58.4 483.7
KEYWORD 961 18.8% 155 16.1% 47 3369.2 23160.6
FORM/PUB TYPE 28 0.5% 3 10.7% 167 888.4 1360.7
DATE 677 13.2% 395 58.3% 3 28.1 146.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 2 0.0% 0 0.0% 4 4.0 1.4
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 14 0.3% 1 7.1% 16 317.8 997.7
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 58 1.1% 0 0.0% 1 1.0 0.0
PERIODICAL 107 2.1% 18 16.8% 4 15.6 29.6
EXACT PE 20 0.4% 1 5.0% 3 6.4 6.7
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 316 6.2% 172 54.4% 2 84.0 392.7
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 971 25.5% 478 49.2% 4 100.0 507.4
Single 2,836 74.5% 587 20.7% 32 1632.3 14255.8
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 3 50.0% 0 0.0% 20 15.3 8.1
EXACT SUBJECT 3 50.0% 2 66.7% 11 11.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 86.0%
LONG 0.8%
TAGS 1.7%
FIELDS 5.3%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. NS command - no next screen 26.6%
2. DISPLAY command - no FIND results 26.0%
3. First word of command is invalid 21.3%
4. FIND command with invalid index name 5.7%
5. DISPLAY command contains invalid word 3.2%
6. PS command - no previous screen 2.5%
7. Search term missing from search command 1.9%
8. Valid command at an inappropriate time 1.8%
9. Add-on search, no index name after verb 1.4%
10. Command contains escape or arrow key 1.1%
11. All others 8.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 34.1%
2. GUIDE 17.6%
3. MAIL 10.6%
4. COMMANDS (ABI/PSY DBS) 5.9%
5. FIND (PSY DB) 5.9%
6. ADDON SEARCH 3.5%
7. DISPLAY (INS/PSY DBS) 2.4%
8. Unrecognized term 2.4%
9. G445 1.2%
10. I154 1.2%
11. All others 15.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.3%
2. First word of command is invalid 11.0%
3. DISPLAY command - middle of >1 screen 11.0%
4. DISPLAY command-first of >1 screen 9.1%
5. FIND command with invalid index name 7.3%
6. FIND command with zero results 7.3%
7. NS command - no next screen 3.7%
8. FIND command retrieves >1 book 3.7%
9. DISPLAY command - last of >1 screen 3.7%
10. DISPLAY command-complete in one screen 2.4%
11. All others 22.6%
Ten most frequent SHOW requests:
1. HISTORY 58.3%
2. MAIL STATUS 22.2%
3. SEARCH 11.1%
4. LOCATION 2.8%
5. PSYCINFO NEWS 2.8%
6. DATABASES 2.8%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)