MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/15/01 through 12/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 77 93
Davis 51 2 53
Irvine 21 0 21
Los Angeles 1 124 125
Riverside 0 30 30
San Diego 8 74 82
San Francisco 21 0 21
Santa Barbara 1 11 12
Santa Cruz 0 10 10
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 9 9
Other-Network UC n/a 123 123
_______ ______ _____
119 460 579
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 26 123
2-4 a.m. 14 277 1,110
4-6 a.m. 3 12 75
6-8 a.m. 5 19 283
8-10 a.m. 59 194 904
10-12 a.m. 132 544 4,392
12-2 p.m. 107 470 4,445
2-4 p.m. 105 346 2,448
4-6 p.m. 82 269 3,354
6-8 p.m. 34 185 1,670
8-10 p.m. 16 84 896
10-12 p.m. 11 81 708
__________ __________ __________ _________________
Total: 579 2,507 20,408
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 50 206 256
Davis 440 10 450
Irvine 109 0 109
Los Angeles 8 546 554
Riverside 0 170 170
San Diego 39 303 342
San Francisco 131 0 131
Santa Barbara 3 52 55
Santa Cruz 0 21 21
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 18 18
Other-Network UC n/a 401 401
_______ ______ _____
780 1,727 2,507
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 415 1,979 2,394
Davis 1,877 46 1,923
Irvine 1,214 0 1,214
Los Angeles 10 4,252 4,262
Riverside 0 2,560 2,560
San Diego 44 3,187 3,231
San Francisco 1,764 0 1,764
Santa Barbara 6 234 240
Santa Cruz 0 247 247
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 387 387
Other-Network UC n/a 2,186 2,186
_______ ______ _____
5,330 15,078 20,408
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 0.8
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) 6:07
Average session length (minutes:seconds) 13:35
Longest session recorded (minutes:seconds) 588:04
Average number of searches completed per session 4.3
Retrievals per search - median 7.0
Retrievals per search - average 983.2
Retrievals per search - standard deviation 11434
Percent of searches completed with 0 results 26.4%
Percent of searches entered that are long 4.7%
Percent of long searches completed
(includes partial results) 69.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,156 32.8%
DISPLAY (excluding automatic displays) 2,467 37.6%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 19 0.3%
EXPLAIN 23 0.4%
SET/RESET 192 2.9%
SHOW 9 0.1%
ADD ON (AND, OR, AND NOT) 351 5.3%
LOGON or LOGOFF 834 12.7%
COMMENT 0 0.0%
SAVE 326 5.0%
USE 0 0.0%
OTHER 188 2.9%
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 1,078 37.6% 224 20.8% 15 59.3 173.3
TITLE WORD 244 8.5% 83 34.0% 13 106.1 247.0
EXACT TITLE 18 0.6% 2 11.1% 3 11.3 15.9
JOURNAL 90 3.1% 33 36.7% 379 3302.8 4549.6
EXACT JOURNAL 24 0.8% 9 37.5% 110 395.9 600.9
SUBJECT 48 1.7% 10 20.8% 260 7516.6 15204.1
EXACT SUBJECT 250 8.7% 173 69.2% 1 117.6 553.1
KEYWORD 465 16.2% 54 11.6% 53 4381.5 27244.1
FORM/PUB TYPE 3 0.1% 1 33.3% 6 5.5 3.5
DATE 455 15.9% 220 48.4% 5 51.2 258.2
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 0.1% 0 0.0% 25 25.0 7.1
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 4 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 32 1.1% 6 18.8% 6 85.8 290.7
EXACT PE 9 0.3% 1 11.1% 2 4.1 5.7
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 146 5.1% 82 56.2% 1 81.0 516.6
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 581 27.3% 261 44.9% 5 48.7 245.6
Single 1,548 72.7% 290 18.7% 35 1864.3 15965.0
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 3 100% 2 66.7% 1 1.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.9%
SHORT 85.0%
LONG 1.4%
TAGS 2.0%
FIELDS 3.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.4%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 28.5%
2. DISPLAY command - no FIND results 25.5%
3. First word of command is invalid 16.9%
4. FIND command with invalid index name 6.0%
5. DISPLAY command contains invalid word 3.2%
6. Search term missing from search command 2.3%
7. PS command - no previous screen 1.9%
8. DISPLAY command-record numbers too large 1.6%
9. Add-on search, no index name after verb 1.6%
10. Valid command at an inappropriate time 1.2%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 26.1%
2. GUIDE 13.0%
3. MAIL 13.0%
4. INDEXES (PSY DB) 13.0%
5. FIND (PSY DB) 13.0%
6. MAGS TEXT 4.3%
7. COMMANDS (ABI/PSY DBS) 4.3%
8. PUBLICATION TYPE (PSY DB) 4.3%
9. LIMIT (PSY DB) 4.3%
10. ADDON SEARCH 4.3%
11. All others 0.0%
Ten most frequent HELP situations:
1. First word of command is invalid 14.3%
2. DISPLAY command-first of >1 screen 14.3%
3. FIND command with invalid index name 9.5%
4. Help requested from SET DB command 9.5%
5. DISPLAY command - middle of >1 screen 7.1%
6. SET command with invalid setting 4.8%
7. F/BR command with invalid search term 4.8%
8. FIND command with zero results 4.8%
9. FIND command retrieves >1 book 4.8%
10. DISPLAY command - last of >1 screen 4.8%
11. All others 21.4%
Ten most frequent SHOW requests:
1. HISTORY 87.5%
2. SEARCH 12.5%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)