MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/09/01 through 06/15/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 230 233
Davis 35 2 37
Irvine 92 0 92
Los Angeles 0 104 104
Riverside 2 4 6
San Diego 32 121 153
San Francisco 22 0 22
Santa Barbara 0 90 90
Santa Cruz 2 16 18
Lawrence Berkeley 0 34 34
Lawrence Livermore 0 47 47
Los Alamos 0 0 0
Other - UC 2 36 38
Other-Network UC n/a 456 456
_______ ______ _____
190 1,140 1,330
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 836 2,052 15,701
INS90 177 345 2,057
INS85 131 227 1,062
INS80 100 171 782
INS69 86 169 1,219
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 52 120 771
2-4 a.m. 29 92 428
4-6 a.m. 27 124 376
6-8 a.m. 53 83 454
8-10 a.m. 125 274 1,543
10-12 a.m. 219 466 3,653
12-2 p.m. 194 389 3,625
2-4 p.m. 237 582 3,908
4-6 p.m. 224 407 2,567
6-8 p.m. 85 238 1,594
8-10 p.m. 41 92 751
10-12 p.m. 44 97 1,151
__________ __________ __________ _________________
Total: 1,330 2,964 20,821
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 12 605 617
Davis 98 5 103
Irvine 204 0 204
Los Angeles 0 190 190
Riverside 5 9 14
San Diego 93 291 384
San Francisco 85 0 85
Santa Barbara 0 182 182
Santa Cruz 1 41 42
Lawrence Berkeley 0 57 57
Lawrence Livermore 0 145 145
Los Alamos 0 0 0
Other - UC 6 72 78
Other-Network UC n/a 863 863
_______ ______ _____
504 2,460 2,964
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25 4,053 4,078
Davis 1,392 1 1,393
Irvine 1,893 0 1,893
Los Angeles 0 1,645 1,645
Riverside 3 21 24
San Diego 416 2,011 2,427
San Francisco 589 0 589
Santa Barbara 0 1,053 1,053
Santa Cruz 19 351 370
Lawrence Berkeley 0 904 904
Lawrence Livermore 0 912 912
Los Alamos 0 0 0
Other - UC 5 576 581
Other-Network UC n/a 4,952 4,952
_______ ______ _____
4,342 16,479 20,821
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 7:44
Average session length (minutes:seconds) 11:49
Longest session recorded (minutes:seconds) 354:52
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1466.3
Retrievals per search - standard deviation 19798
Percent of searches completed with 0 results 28.0%
Percent of searches entered that are long 5.6%
Percent of long searches completed
(includes partial results) 77.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,635 29.7%
DISPLAY (excluding automatic displays) 3,292 37.2%
BROWSE 10 0.1%
SELECT 0 0.0%
HELP 48 0.5%
EXPLAIN 79 0.9%
SET/RESET 767 8.7%
SHOW 34 0.4%
ADD ON (AND, OR, AND NOT) 329 3.7%
LOGON or LOGOFF 1,196 13.5%
COMMENT 0 0.0%
SAVE 117 1.3%
USE 2 0.0%
OTHER 359 4.1%
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 1,168 41.1% 271 23.2% 18 83.6 281.8
TITLE WORD 569 20.0% 270 47.4% 7 424.6 3667.0
EXACT TITLE 26 0.9% 16 61.5% 8 26.4 39.6
JOURNAL 67 2.4% 30 44.8% 36 3751.1 17622.4
EXACT JOURNAL 15 0.5% 6 40.0% 2,771 5172.8 6632.9
SUBJECT 83 2.9% 30 36.1% 35 2028.5 8474.1
EXACT SUBJECT 14 0.5% 4 28.6% 2,003 2831.9 4920.7
THESAURUS 15 0.5% 1 6.7% 245 8566.4 19189.0
EXACT THESAURUS 3 0.1% 0 0.0% 12,838 8661.3 7234.2
KEYWORD 618 21.8% 115 18.6% 37 5726.4 38409.9
SUBFILE 5 0.2% 0 0.0% 112 3022.8 4026.9
FORM 8 0.3% 0 0.0% 58 252.4 405.5
DATE 24 0.8% 7 29.2% 9 230.6 476.6
ADDED 11 0.4% 6 54.5% 21 17.8 8.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 59 2.1% 17 28.8% 10 44.3 111.5
CONFERENCE 20 0.7% 4 20.0% 1,034 1086.0 889.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 22 0.8% 11 50.0% 20 57.9 100.7
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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 99 3.5% 21 21.2% 5 35.7 150.3
EXACT PE 13 0.5% 4 30.8% 2 12.6 22.1
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 1 0.0% 0 0.0% 22 22.0 0.0
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 235 9.1% 84 35.7% 7 819.0 5186.6
Single 2,361 90.9% 641 27.1% 21 1945.5 21154.8
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 10 100% 6 60.0% 2 28.8 54.2
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 82.2%
LONG 3.0%
TAGS 0.1%
FIELDS 5.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 4.7%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 43.1%
2. First word of command is invalid 25.6%
3. Max. # of ports to a Z39 db are in use 5.6%
4. FIND command with invalid index name 4.4%
5. DISPLAY command contains invalid word 3.5%
6. PS command - no previous screen 2.5%
7. Valid command at an inappropriate time 1.7%
8. DISPLAY command - no FIND results 1.3%
9. DISPLAY command-record numbers too large 1.2%
10. Invalid SET DB INS command issued 1.1%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. INSPEC BACKFILES 22.8%
2. INSPEC DATABASES 16.5%
3. FIND (INSPEC DBS) 11.4%
4. MAIL 7.6%
5. DATABASES 7.6%
6. Unrecognized term 6.3%
7. 1752 5.1%
8. INDEXES (INSPEC DBS) 3.8%
9. GUIDE (INSPEC DBS) 2.5%
10. 5341 2.5%
11. All others 13.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.0%
2. First word of command is invalid 15.7%
3. FIND command with invalid index name 8.7%
4. DISPLAY command-first of >1 screen 8.7%
5. FIND command with zero results 7.1%
6. DISPLAY command - middle of >1 screen 7.1%
7. NS command - no next screen 5.5%
8. DISPLAY command - last of >1 screen 4.7%
9. DISPLAY command-complete in one screen 3.9%
10. FIND command retrieves >1 book 2.4%
11. All others 10.2%
Ten most frequent SHOW requests:
1. HISTORY 85.7%
2. INSPEC LOADING STATISTICS 7.1%
3. INSPEC NEWS 3.6%
4. SEARCH 3.6%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)