MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 08/01/00 through 08/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 27 2,081 2,108
Davis 217 18 235
Irvine 419 0 419
Los Angeles 63 1,097 1,160
Riverside 25 70 95
San Diego 342 798 1,140
San Francisco 189 0 189
Santa Barbara 126 554 680
Santa Cruz 38 230 268
Lawrence Berkeley 0 364 364
Lawrence Livermore 0 251 251
Los Alamos 0 0 0
Other - UC 9 306 315
Other-Network UC n/a 1,235 1,235
_______ ______ _____
1,455 7,004 8,459
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 5,304 13,261 134,130
INS90 1,191 2,251 15,069
INS85 783 1,399 9,017
INS80 609 1,076 5,779
INS69 572 1,380 12,895
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 194 508 9,120
2-4 a.m. 91 278 1,392
4-6 a.m. 137 319 1,947
6-8 a.m. 285 769 9,942
8-10 a.m. 886 1,956 19,511
10-12 a.m. 1,520 3,392 26,640
12-2 p.m. 1,210 2,611 23,222
2-4 p.m. 1,698 4,010 31,501
4-6 p.m. 1,387 3,235 24,201
6-8 p.m. 525 1,192 8,803
8-10 p.m. 336 666 11,254
10-12 p.m. 190 431 9,357
__________ __________ __________ _________________
Total: 8,459 19,367 176,890
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 59 4,448 4,507
Davis 486 29 515
Irvine 1,454 0 1,454
Los Angeles 99 2,497 2,596
Riverside 54 206 260
San Diego 904 1,719 2,623
San Francisco 409 0 409
Santa Barbara 251 1,467 1,718
Santa Cruz 71 421 492
Lawrence Berkeley 0 905 905
Lawrence Livermore 0 541 541
Los Alamos 0 0 0
Other - UC 45 725 770
Other-Network UC n/a 2,577 2,577
_______ ______ _____
3,832 15,535 19,367
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 539 56,796 57,335
Davis 2,981 209 3,190
Irvine 16,708 0 16,708
Los Angeles 2,823 23,383 26,206
Riverside 194 1,281 1,475
San Diego 4,289 18,624 22,913
San Francisco 1,486 0 1,486
Santa Barbara 1,117 11,396 12,513
Santa Cruz 706 2,930 3,636
Lawrence Berkeley 0 6,456 6,456
Lawrence Livermore 0 3,934 3,934
Los Alamos 0 0 0
Other - UC 232 6,172 6,404
Other-Network UC n/a 14,634 14,634
_______ ______ _____
31,075 145,815 176,890
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 2.5
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 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:27
Average session length (minutes:seconds) 11:54
Longest session recorded (minutes:seconds) 500:06
Average number of searches completed per session 2.3
Retrievals per search - median 7.0
Retrievals per search - average 544.2
Retrievals per search - standard deviation 9238.7
Percent of searches completed with 0 results 25.1%
Percent of searches entered that are long 4.4%
Percent of long searches completed
(includes partial results) 68.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 17,751 30.4%
DISPLAY (excluding automatic displays) 22,147 37.9%
BROWSE 7 0.0%
SELECT 0 0.0%
HELP 384 0.7%
EXPLAIN 712 1.2%
SET/RESET 4,804 8.2%
SHOW 138 0.2%
ADD ON (AND, OR, AND NOT) 1,616 2.8%
LOGON or LOGOFF 7,797 13.3%
COMMENT 0 0.0%
SAVE 748 1.3%
USE 22 0.0%
OTHER 2,319 4.0%
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 8,820 45.6% 2,002 22.7% 15 66.8 318.8
TITLE WORD 3,376 17.5% 1,266 37.5% 7 125.8 1119.6
EXACT TITLE 130 0.7% 65 50.0% 1 5.4 13.0
JOURNAL 663 3.4% 270 40.7% 87 2318.2 7350.5
EXACT JOURNAL 149 0.8% 53 35.6% 22 1878.2 7574.2
SUBJECT 516 2.7% 167 32.4% 18 525.3 2417.3
EXACT SUBJECT 42 0.2% 3 7.1% 8 1486.5 4376.8
THESAURUS 8 0.0% 3 37.5% 10,092 8172.8 4330.8
EXACT THESAURUS 19 0.1% 2 10.5% 1,192 1176.8 1117.6
KEYWORD 4,089 21.2% 829 20.3% 28 2370.2 21687.4
SUBFILE 49 0.3% 5 10.2% 26 155.4 435.1
FORM 98 0.5% 20 20.4% 21 200.9 846.2
DATE 349 1.8% 82 23.5% 9 154.5 495.4
ADDED 11 0.1% 4 36.4% 8 10.0 6.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 273 1.4% 68 24.9% 12 96.4 431.7
CONFERENCE 46 0.2% 20 43.5% 83 8623.7 41934.0
LANGUAGE 5 0.0% 0 0.0% 8 79.8 110.9
CHEMICAL NAME 80 0.4% 39 48.7% 35 132.9 253.6
ISSN 8 0.0% 2 25.0% 298 3401.3 5620.6
ISBN 4 0.0% 0 0.0% 291 256.3 222.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 493 2.6% 100 20.3% 7 102.5 965.3
EXACT PE 94 0.5% 9 9.6% 6 24.0 74.3
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 9 0.0% 3 33.3% 24 92.2 176.5
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 1,771 10.1% 582 32.9% 6 143.9 1252.5
Single 15,737 89.9% 3,831 24.3% 18 829.4 11671.5
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:
THESAURUS 7 100% 1 14.3% 7 5.5 3.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 85.6%
LONG 3.0%
TAGS 0.3%
FIELDS 3.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 47.4%
2. First word of command is invalid 24.5%
3. FIND command with invalid index name 5.7%
4. DISPLAY command contains invalid word 3.0%
5. PS command - no previous screen 1.6%
6. NS of SHOW/EXP command-no next screen 1.3%
7. Search term missing from search command 1.3%
8. DISPLAY command-record numbers too large 1.3%
9. Valid command at an inappropriate time 1.3%
10. DISPLAY command - no FIND results 1.1%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.3%
2. INSPEC DATABASES 11.8%
3. GUIDE (INSPEC DBS) 8.3%
4. INDEXES (INSPEC DBS) 6.6%
5. INSPEC BACKFILES 6.5%
6. DATABASES 6.5%
7. LOCATE (INS/PSY DBS) 4.8%
8. Unrecognized term 3.9%
9. 1752 3.8%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.4%
11. All others 30.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.2%
2. First word of command is invalid 10.0%
3. DISPLAY command - middle of >1 screen 5.8%
4. FIND command with zero results 4.8%
5. DISPLAY command-first of >1 screen 4.8%
6. DISPLAY command-complete in one screen 4.7%
7. FIND command with invalid index name 4.6%
8. FIND command retrieves >1 book 4.0%
9. DISPLAY command - last of >1 screen 4.0%
10. NS command - no next screen 3.9%
11. All others 26.1%
Ten most frequent SHOW requests:
1. HISTORY 49.6%
2. MAIL STATUS 14.8%
3. INSPEC NEWS 11.1%
4. SETTINGS (INS/PSY DBS) 7.4%
5. SEARCH 5.9%
6. INSPEC LOADING STATISTICS 3.0%
7. SYSTEM NEWS 3.0%
8. DATABASES 1.5%
9. PUBLICATION TYPES (INSPEC DBS) 0.7%
10. FORM NAMES (INSPEC DBS) 0.7%
11. All others 2.2%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)