MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 348 802 1,150
Davis 613 34 647
Irvine 462 0 462
Los Angeles 447 1,012 1,459
Riverside 254 138 392
San Diego 77 533 610
San Francisco 350 18 368
Santa Barbara 108 303 411
Santa Cruz 125 123 248
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 36 124 160
Other-Network UC n/a 664 664
_______ ______ _____
2,820 3,751 6,571
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 88 443 4,877
2-4 a.m. 31 195 1,386
4-6 a.m. 20 61 1,383
6-8 a.m. 116 468 7,916
8-10 a.m. 599 2,126 21,269
10-12 a.m. 1,217 4,583 49,716
12-2 p.m. 1,181 4,933 50,650
2-4 p.m. 1,503 6,322 68,210
4-6 p.m. 975 3,908 40,192
6-8 p.m. 373 1,542 20,086
8-10 p.m. 286 1,266 13,926
10-12 p.m. 182 888 9,364
__________ __________ __________ _________________
Total: 6,571 26,735 288,975
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 1,663 3,403 5,066
Davis 2,240 101 2,341
Irvine 1,838 0 1,838
Los Angeles 2,087 4,090 6,177
Riverside 1,113 556 1,669
San Diego 282 1,927 2,209
San Francisco 1,316 40 1,356
Santa Barbara 532 1,494 2,026
Santa Cruz 709 579 1,288
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 82 435 517
Other-Network UC n/a 2,248 2,248
_______ ______ _____
11,862 14,873 26,735
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,462 31,963 49,425
Davis 20,553 1,263 21,816
Irvine 18,628 0 18,628
Los Angeles 29,552 43,677 73,229
Riverside 12,789 6,339 19,128
San Diego 2,366 16,382 18,748
San Francisco 14,667 2,232 16,899
Santa Barbara 4,954 18,713 23,667
Santa Cruz 5,394 5,984 11,378
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1,120 6,581 7,701
Other-Network UC n/a 28,356 28,356
_______ ______ _____
127,485 161,490 288,975
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 1.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 PSYCINFO Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:56
Average session length (minutes:seconds) 14:24
Longest session recorded (minutes:seconds) 425:26
Average number of searches completed per session 4.0
Retrievals per search - median 10.0
Retrievals per search - average 814.5
Retrievals per search - standard deviation 7775.1
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 59.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 23,827 28.9%
DISPLAY (excluding automatic displays) 35,158 42.7%
BROWSE 128 0.2%
SELECT 52 0.1%
HELP 1,088 1.3%
EXPLAIN 1,286 1.6%
SET/RESET 1,817 2.2%
SHOW 284 0.3%
ADD ON (AND, OR, AND NOT) 2,895 3.5%
LOGON or LOGOFF 9,689 11.8%
COMMENT 3 0.0%
SAVE 3,463 4.2%
USE 20 0.0%
OTHER 2,898 3.5%
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 11,148 41.7% 2,202 19.8% 15 57.8 159.3
TITLE WORD 2,917 10.9% 829 28.4% 11 180.9 2350.3
EXACT TITLE 561 2.1% 216 38.5% 2 17.6 47.7
JOURNAL 702 2.6% 208 29.6% 510 5009.9 22981.6
EXACT JOURNAL 295 1.1% 79 26.8% 403 2195.7 13866.8
SUBJECT 2,265 8.5% 1,214 53.6% 553 4941.7 15813.3
EXACT SUBJECT 137 0.5% 57 41.6% 552 2024.3 4302.4
KEYWORD 6,177 23.1% 877 14.2% 59 1891.5 11078.1
FORM/PUB TYPE 110 0.4% 11 10.0% 79 1164.3 3593.5
DATE 1,523 5.7% 261 17.1% 5 35.6 137.3
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. 24 0.1% 9 37.5% 32 1565.1 3661.7
CONFERENCE 12 0.0% 4 33.3% 259 1093.3 1744.7
LANGUAGE 58 0.2% 5 8.6% 117 653.1 2336.9
ISSN 4 0.0% 2 50.0% 90 90.0 0.0
ISBN 2 0.0% 2 100% 0 0.0 0.0
ID NUMBER 17 0.1% 17 100% 0 0.0 0.0
PERIODICAL 526 2.0% 120 22.8% 5 217.3 1355.7
EXACT PE 154 0.6% 18 11.7% 2 12.9 39.4
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 121 0.5% 21 17.4% 47 1922.1 6926.5
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 3,144 13.4% 734 23.3% 6 112.5 896.7
Single 20,350 86.6% 4,651 22.9% 34 1222.7 8983.1
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 117 91.4% 31 26.5% 2 9.3 16.1
EXACT SUBJECT 11 8.6% 6 54.5% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 90.6%
LONG 1.3%
TAGS 0.1%
FIELDS 1.6%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 32.9%
2. First word of command is invalid 29.5%
3. FIND command with invalid index name 8.4%
4. DISPLAY command contains invalid word 5.2%
5. PS command - no previous screen 5.0%
6. Valid command at an inappropriate time 2.3%
7. Command contains escape or arrow key 1.6%
8. Search term missing from search command 1.6%
9. Add-on search, no index name after verb 1.4%
10. DISPLAY command-record numbers too large 1.2%
11. All others 10.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 25.6%
2. GUIDE 18.4%
3. FIND (PSY DB) 9.1%
4. COMMANDS (ABI/PSY DBS) 5.1%
5. Unrecognized term 4.5%
6. INDEXES (PSY DB) 4.4%
7. DISPLAY (INS/PSY DBS) 2.8%
8. MAIL 2.6%
9. ADDON SEARCH 2.5%
10. DATABASES 1.7%
11. All others 23.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.6%
2. First word of command is invalid 14.0%
3. DISPLAY command-first of >1 screen 8.1%
4. DISPLAY command - middle of >1 screen 7.5%
5. FIND command with invalid index name 7.1%
6. FIND command with zero results 6.6%
7. DISPLAY command-complete in one screen 5.1%
8. NS command - no next screen 3.7%
9. FIND command retrieves >1 book 3.6%
10. DISPLAY command - last of >1 screen 2.8%
11. All others 22.0%
Ten most frequent SHOW requests:
1. HISTORY 42.2%
2. SEARCH 37.8%
3. MAIL STATUS 4.4%
4. SETTINGS (INS/PSY DBS) 4.0%
5. GLOSSARY 4.0%
6. MAIL SETTINGS 2.2%
7. PSYCINFO NEWS 1.8%
8. SYSTEM NEWS 1.5%
9. PUBLICATION TYPES (PSY DB) 0.7%
10. 0405 0.4%
11. All others 1.1%