MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 10/13/01 through 10/19/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 20 158 178
Davis 115 3 118
Irvine 50 0 50
Los Angeles 5 124 129
Riverside 40 17 57
San Diego 9 86 95
San Francisco 39 0 39
Santa Barbara 9 23 32
Santa Cruz 2 31 33
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 198 198
_______ ______ _____
289 660 949
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 37 186
2-4 a.m. 19 159 660
4-6 a.m. 6 9 94
6-8 a.m. 22 49 278
8-10 a.m. 106 276 2,531
10-12 a.m. 160 492 3,374
12-2 p.m. 182 598 6,505
2-4 p.m. 204 720 7,088
4-6 p.m. 115 434 4,445
6-8 p.m. 58 193 2,279
8-10 p.m. 35 115 580
10-12 p.m. 27 102 797
__________ __________ __________ _________________
Total: 949 3,184 28,817
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 66 578 644
Davis 467 16 483
Irvine 235 0 235
Los Angeles 22 440 462
Riverside 99 51 150
San Diego 44 247 291
San Francisco 143 0 143
Santa Barbara 13 116 129
Santa Cruz 2 97 99
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 80 81
Other-Network UC n/a 467 467
_______ ______ _____
1,092 2,092 3,184
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 346 5,162 5,508
Davis 3,164 62 3,226
Irvine 1,692 0 1,692
Los Angeles 237 4,513 4,750
Riverside 2,756 868 3,624
San Diego 60 2,419 2,479
San Francisco 1,018 0 1,018
Santa Barbara 19 1,146 1,165
Santa Cruz 18 1,290 1,308
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 943 943
Other-Network UC n/a 3,104 3,104
_______ ______ _____
9,310 19,507 28,817
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) 8:35
Average session length (minutes:seconds) 15:08
Longest session recorded (minutes:seconds) 502:30
Average number of searches completed per session 3.3
Retrievals per search - median 8.0
Retrievals per search - average 541.4
Retrievals per search - standard deviation 5260.2
Percent of searches completed with 0 results 22.0%
Percent of searches entered that are long 3.6%
Percent of long searches completed
(includes partial results) 66.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,875 30.7%
DISPLAY (excluding automatic displays) 3,614 38.6%
BROWSE 9 0.1%
SELECT 6 0.1%
HELP 109 1.2%
EXPLAIN 118 1.3%
SET/RESET 309 3.3%
SHOW 28 0.3%
ADD ON (AND, OR, AND NOT) 305 3.3%
LOGON or LOGOFF 1,337 14.3%
COMMENT 0 0.0%
SAVE 412 4.4%
USE 1 0.0%
OTHER 265 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 1,300 38.5% 214 16.5% 15 68.2 309.5
TITLE WORD 419 12.4% 110 26.3% 6 166.1 1265.0
EXACT TITLE 47 1.4% 18 38.3% 4 48.2 163.6
JOURNAL 47 1.4% 15 31.9% 252 1347.8 4012.1
EXACT JOURNAL 43 1.3% 14 32.6% 588 1723.8 2333.9
SUBJECT 191 5.7% 94 49.2% 169 3841.1 12368.3
EXACT SUBJECT 125 3.7% 105 84.0% 3 2088.9 4253.4
KEYWORD 729 21.6% 102 14.0% 33 1552.3 10401.0
FORM/PUB TYPE 13 0.4% 2 15.4% 28 568.0 1360.8
DATE 276 8.2% 117 42.4% 4 11.2 21.1
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% 1 25.0% 43 1168.3 1978.7
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 75 1819.5 3538.5
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 3 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 87 2.6% 14 16.1% 3 10.1 26.1
EXACT PE 16 0.5% 2 12.5% 1 6.5 16.9
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 73 2.2% 53 72.6% 4 401.2 1448.1
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 459 16.2% 165 35.9% 4 34.3 274.5
Single 2,376 83.8% 476 20.0% 25 850.0 6725.6
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 9 100% 1 11.1% 1 8.8 19.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.7%
SHORT 86.9%
LONG 1.3%
TAGS 0.1%
FIELDS 2.9%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. NS command - no next screen 29.0%
2. First word of command is invalid 27.1%
3. DISPLAY command - no FIND results 8.9%
4. FIND command with invalid index name 8.5%
5. PS command - no previous screen 6.3%
6. DISPLAY command contains invalid word 4.5%
7. Valid command at an inappropriate time 3.0%
8. Search term missing from search command 1.8%
9. NS of SHOW/EXP command-no next screen 1.6%
10. Max. # of ports to a Z39 db are in use 1.3%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.3%
2. LOCATE (INS/PSY DBS) 26.3%
3. FIND (PSY DB) 8.5%
4. DATABASES 5.9%
5. COMMANDS (ABI/PSY DBS) 3.4%
6. MAIL 3.4%
7. DISPLAY (INS/PSY DBS) 3.4%
8. Unrecognized term 2.5%
9. SEARCH (PSY DB) 1.7%
10. P124 1.7%
11. All others 16.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. First word of command is invalid 18.5%
3. FIND command with invalid index name 11.0%
4. DISPLAY command - middle of >1 screen 11.0%
5. DISPLAY command-first of >1 screen 7.9%
6. FIND command retrieves >1 book 4.4%
7. PS command - no previous screen 3.5%
8. DISPLAY command-complete in one screen 3.5%
9. FIND command with zero results 2.6%
10. DISPLAY command - last of >1 screen 2.2%
11. All others 14.5%
Ten most frequent SHOW requests:
1. HISTORY 51.9%
2. PSYCINFO NEWS 18.5%
3. SEARCH 14.8%
4. SETTINGS (INS/PSY DBS) 7.4%
5. MAIL STATUS 7.4%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)