MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 07/21/01 through 07/27/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 20 149 169
Davis 149 1 150
Irvine 49 0 49
Los Angeles 1 125 126
Riverside 2 17 19
San Diego 5 96 101
San Francisco 51 0 51
Santa Barbara 12 22 34
Santa Cruz 9 23 32
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 4 31 35
Other-Network UC n/a 130 130
_______ ______ _____
302 594 896
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 34 967
2-4 a.m. 18 226 715
4-6 a.m. 20 265 1,073
6-8 a.m. 18 56 419
8-10 a.m. 83 246 2,901
10-12 a.m. 171 566 4,543
12-2 p.m. 143 528 4,841
2-4 p.m. 205 680 5,894
4-6 p.m. 118 512 4,525
6-8 p.m. 41 141 2,233
8-10 p.m. 39 182 2,722
10-12 p.m. 23 66 769
__________ __________ __________ _________________
Total: 896 3,502 31,602
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 115 544 659
Davis 798 2 800
Irvine 281 0 281
Los Angeles 1 457 458
Riverside 4 53 57
San Diego 10 257 267
San Francisco 210 0 210
Santa Barbara 49 76 125
Santa Cruz 14 96 110
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8 152 160
Other-Network UC n/a 375 375
_______ ______ _____
1,490 2,012 3,502
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,159 5,629 6,788
Davis 4,633 1 4,634
Irvine 1,791 0 1,791
Los Angeles 2 4,503 4,505
Riverside 216 511 727
San Diego 32 1,953 1,985
San Francisco 2,629 0 2,629
Santa Barbara 373 555 928
Santa Cruz 270 550 820
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 198 1,001 1,199
Other-Network UC n/a 5,596 5,596
_______ ______ _____
11,303 20,299 31,602
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
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 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 5:54
Average session length (minutes:seconds) 12:34
Longest session recorded (minutes:seconds) 293:58
Average number of searches completed per session 3.9
Retrievals per search - median 5.0
Retrievals per search - average 330.6
Retrievals per search - standard deviation 4049.6
Percent of searches completed with 0 results 23.9%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 74.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,208 31.2%
DISPLAY (excluding automatic displays) 4,174 40.6%
BROWSE 12 0.1%
SELECT 0 0.0%
HELP 105 1.0%
EXPLAIN 86 0.8%
SET/RESET 319 3.1%
SHOW 21 0.2%
ADD ON (AND, OR, AND NOT) 294 2.9%
LOGON or LOGOFF 1,291 12.6%
COMMENT 0 0.0%
SAVE 500 4.9%
USE 0 0.0%
OTHER 288 2.8%
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 1,502 35.0% 225 15.0% 13 52.7 153.3
TITLE WORD 323 7.5% 84 26.0% 9 162.2 690.1
EXACT TITLE 49 1.1% 16 32.7% 2 11.9 19.1
JOURNAL 79 1.8% 27 34.2% 98 3173.2 7799.1
EXACT JOURNAL 35 0.8% 5 14.3% 319 789.9 1040.3
SUBJECT 130 3.0% 62 47.7% 754 3540.9 7711.6
EXACT SUBJECT 460 10.7% 281 61.1% 2 7.0 12.8
KEYWORD 695 16.2% 118 17.0% 33 923.9 9011.6
FORM/PUB TYPE 16 0.4% 1 6.3% 46 948.9 1859.4
DATE 662 15.4% 309 46.7% 3 11.8 29.3
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. 4 0.1% 2 50.0% 5 5.0 1.4
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 79 221.0 316.8
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 16 0.4% 0 0.0% 1 1.0 0.0
PERIODICAL 39 0.9% 6 15.4% 3 165.5 473.5
EXACT PE 6 0.1% 0 0.0% 3 12.8 26.1
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 269 6.3% 119 44.2% 2 9.5 28.7
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 823 25.9% 351 42.6% 3 46.3 363.9
Single 2,359 74.1% 428 18.1% 22 544.6 5353.1
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 12 100% 4 33.3% 3 3.5 3.1
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 87.4%
LONG 0.6%
TAGS 1.1%
FIELDS 5.0%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.3%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 25.2%
2. DISPLAY command - no FIND results 24.6%
3. First word of command is invalid 23.3%
4. FIND command with invalid index name 5.5%
5. PS command - no previous screen 4.3%
6. DISPLAY command contains invalid word 3.2%
7. Search term missing from search command 2.8%
8. Valid command at an inappropriate time 2.6%
9. Command contains escape or arrow key 0.9%
10. NS of SHOW/EXP command-no next screen 0.8%
11. All others 6.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 25.6%
2. GUIDE 19.8%
3. FIND (PSY DB) 12.8%
4. MAIL 7.0%
5. INDEXES (PSY DB) 7.0%
6. Unrecognized term 7.0%
7. COMMANDS (ABI/PSY DBS) 4.7%
8. DATABASES 4.7%
9. ADDON SEARCH 2.3%
10. PASSWORDS 2.3%
11. All others 7.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.5%
2. First word of command is invalid 14.1%
3. DISPLAY command-first of >1 screen 11.0%
4. DISPLAY command - middle of >1 screen 7.9%
5. PS command - no previous screen 5.8%
6. FIND command with invalid index name 5.8%
7. DISPLAY command - last of >1 screen 5.2%
8. FIND command retrieves >1 book 3.7%
9. 3 HELP commands issued from same code 2.6%
10. Valid command at an inappropriate time 2.1%
11. All others 19.4%
Ten most frequent SHOW requests:
1. SEARCH 47.4%
2. HISTORY 21.1%
3. MAIL SETTINGS 15.8%
4. MAIL STATUS 10.5%
5. PSYCINFO LOADING STATISTICS 5.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)