MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 08/25/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 135 150
Davis 128 1 129
Irvine 30 0 30
Los Angeles 4 81 85
Riverside 1 41 42
San Diego 8 84 92
San Francisco 52 0 52
Santa Barbara 3 32 35
Santa Cruz 4 15 19
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 51 51
Other-Network UC n/a 108 108
_______ ______ _____
245 548 793
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 55 614
2-4 a.m. 14 226 438
4-6 a.m. 18 272 1,216
6-8 a.m. 16 33 223
8-10 a.m. 106 394 3,216
10-12 a.m. 148 495 3,549
12-2 p.m. 136 506 3,334
2-4 p.m. 169 671 5,387
4-6 p.m. 100 395 3,931
6-8 p.m. 38 149 925
8-10 p.m. 20 91 756
10-12 p.m. 22 83 653
__________ __________ __________ _________________
Total: 793 3,370 24,242
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 40 648 688
Davis 855 1 856
Irvine 125 0 125
Los Angeles 5 359 364
Riverside 1 216 217
San Diego 25 204 229
San Francisco 171 0 171
Santa Barbara 8 137 145
Santa Cruz 7 50 57
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 161 161
Other-Network UC n/a 357 357
_______ ______ _____
1,237 2,133 3,370
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 220 5,302 5,522
Davis 3,481 2 3,483
Irvine 1,006 0 1,006
Los Angeles 91 3,562 3,653
Riverside 3 1,189 1,192
San Diego 79 1,368 1,447
San Francisco 1,413 0 1,413
Santa Barbara 11 1,965 1,976
Santa Cruz 189 630 819
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 973 973
Other-Network UC n/a 2,758 2,758
_______ ______ _____
6,493 17,749 24,242
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 1.6
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 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 5:32
Average session length (minutes:seconds) 12:16
Longest session recorded (minutes:seconds) 248:02
Average number of searches completed per session 4.2
Retrievals per search - median 5.0
Retrievals per search - average 617.6
Retrievals per search - standard deviation 8086.2
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 65.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,058 33.6%
DISPLAY (excluding automatic displays) 3,425 37.6%
BROWSE 16 0.2%
SELECT 2 0.0%
HELP 63 0.7%
EXPLAIN 69 0.8%
SET/RESET 249 2.7%
SHOW 14 0.2%
ADD ON (AND, OR, AND NOT) 311 3.4%
LOGON or LOGOFF 1,175 12.9%
COMMENT 0 0.0%
SAVE 437 4.8%
USE 0 0.0%
OTHER 305 3.3%
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 1,384 33.6% 289 20.9% 18 55.2 140.8
TITLE WORD 270 6.6% 79 29.3% 7 101.2 520.1
EXACT TITLE 25 0.6% 7 28.0% 9 21.1 49.6
JOURNAL 72 1.7% 20 27.8% 1,237 4084.1 6540.9
EXACT JOURNAL 53 1.3% 16 30.2% 342 1647.8 2864.2
SUBJECT 157 3.8% 80 51.0% 76 2912.4 9739.5
EXACT SUBJECT 470 11.4% 242 51.5% 1 290.8 3331.3
KEYWORD 682 16.6% 150 22.0% 24 1881.9 15576.3
FORM/PUB TYPE 12 0.3% 1 8.3% 32 53.0 68.9
DATE 625 15.2% 265 42.4% 1 8.8 26.2
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. 1 0.0% 0 0.0% 7 7.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 3 0.1% 1 33.3% 715 714.5 932.7
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 10 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 38 0.9% 12 31.6% 4 42.2 103.5
EXACT PE 8 0.2% 0 0.0% 8 14.0 20.0
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 306 7.4% 88 28.8% 1 190.1 1266.5
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 777 25.6% 310 39.9% 3 29.6 219.1
Single 2,254 74.4% 547 24.3% 28 975.1 9166.0
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 16 100% 6 37.5% 2 6.9 7.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 84.2%
LONG 0.5%
TAGS 3.7%
FIELDS 6.6%
BROWSE REVIEW 0.3%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 28.4%
2. DISPLAY command - no FIND results 26.7%
3. First word of command is invalid 18.6%
4. FIND command with invalid index name 7.6%
5. DISPLAY command contains invalid word 2.5%
6. PS command - no previous screen 2.4%
7. Valid command at an inappropriate time 2.2%
8. Search term missing from search command 1.2%
9. Add-on search, no index name after verb 1.2%
10. 994 0.7%
11. All others 8.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 21.7%
2. GUIDE 18.8%
3. Unrecognized term 7.2%
4. DATABASES 7.2%
5. COMMANDS (ABI/PSY DBS) 5.8%
6. LOCATE (PE DB) 5.8%
7. UPDATE SEARCH 4.3%
8. DISPLAY (INS/PSY DBS) 4.3%
9. FIND (PSY DB) 4.3%
10. MAIL 2.9%
11. All others 17.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.2%
2. First word of command is invalid 12.9%
3. FIND command with invalid index name 9.1%
4. FIND command with zero results 7.6%
5. DISPLAY command - last of >1 screen 6.8%
6. DISPLAY command-complete in one screen 6.1%
7. Multi-index search with zero results 4.5%
8. NS command - no next screen 3.0%
9. FIND command retrieves 1 book 3.0%
10. DISPLAY command-first of >1 screen 3.0%
11. All others 25.8%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 22.2%
3. UPDATE 11.1%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)