MELVYL INSPEC DATABASES 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 2 212 214
Davis 30 1 31
Irvine 49 0 49
Los Angeles 2 151 153
Riverside 6 19 25
San Diego 32 183 215
San Francisco 24 0 24
Santa Barbara 9 43 52
Santa Cruz 4 40 44
Lawrence Berkeley 0 36 36
Lawrence Livermore 0 22 22
Los Alamos 0 0 0
Other - UC 1 94 95
Other-Network UC n/a 467 467
_______ ______ _____
159 1,268 1,427
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 924 2,053 17,516
INS90 199 347 2,146
INS85 126 210 1,024
INS80 81 132 1,918
INS69 97 184 1,720
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 40 108 819
2-4 a.m. 26 74 736
4-6 a.m. 15 26 445
6-8 a.m. 58 158 1,285
8-10 a.m. 160 264 1,209
10-12 a.m. 254 516 3,714
12-2 p.m. 184 393 3,248
2-4 p.m. 279 536 3,479
4-6 p.m. 178 364 3,453
6-8 p.m. 126 228 1,983
8-10 p.m. 29 90 662
10-12 p.m. 78 169 3,291
__________ __________ __________ _________________
Total: 1,427 2,926 24,324
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 10 539 549
Davis 65 3 68
Irvine 150 0 150
Los Angeles 3 311 314
Riverside 13 56 69
San Diego 69 344 413
San Francisco 70 0 70
Santa Barbara 16 74 90
Santa Cruz 11 72 83
Lawrence Berkeley 0 84 84
Lawrence Livermore 0 76 76
Los Alamos 0 0 0
Other - UC 3 161 164
Other-Network UC n/a 796 796
_______ ______ _____
410 2,516 2,926
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 18 5,051 5,069
Davis 1,213 7 1,220
Irvine 1,627 0 1,627
Los Angeles 12 2,023 2,035
Riverside 52 317 369
San Diego 364 2,988 3,352
San Francisco 277 0 277
Santa Barbara 248 706 954
Santa Cruz 17 1,006 1,023
Lawrence Berkeley 0 831 831
Lawrence Livermore 0 491 491
Los Alamos 0 0 0
Other - UC 8 3,035 3,043
Other-Network UC n/a 4,033 4,033
_______ ______ _____
3,836 20,488 24,324
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.9
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 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 9:33
Average session length (minutes:seconds) 14:08
Longest session recorded (minutes:seconds) 1147
Average number of searches completed per session 2.0
Retrievals per search - median 4.0
Retrievals per search - average 1235.6
Retrievals per search - standard deviation 22054
Percent of searches completed with 0 results 32.0%
Percent of searches entered that are long 5.8%
Percent of long searches completed
(includes partial results) 68.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,700 32.0%
DISPLAY (excluding automatic displays) 2,877 34.1%
BROWSE 12 0.1%
SELECT 0 0.0%
HELP 55 0.7%
EXPLAIN 86 1.0%
SET/RESET 873 10.3%
SHOW 14 0.2%
ADD ON (AND, OR, AND NOT) 226 2.7%
LOGON or LOGOFF 1,162 13.8%
COMMENT 0 0.0%
SAVE 91 1.1%
USE 2 0.0%
OTHER 353 4.2%
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 1,302 43.5% 318 24.4% 15 74.3 283.4
TITLE WORD 658 22.0% 410 62.3% 6 49.3 147.0
EXACT TITLE 32 1.1% 19 59.4% 1 3.8 5.2
JOURNAL 82 2.7% 24 29.3% 57 2127.4 4972.8
EXACT JOURNAL 65 2.2% 22 33.8% 10 913.6 3333.4
SUBJECT 106 3.5% 26 24.5% 60 490.8 2283.0
EXACT SUBJECT 8 0.3% 0 0.0% 123 2910.4 5844.2
THESAURUS 8 0.3% 0 0.0% 172 3000.1 4468.1
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 501 16.7% 109 21.8% 23 3940.4 41738.0
SUBFILE 3 0.1% 1 33.3% 58 58.0 0.0
FORM 26 0.9% 5 19.2% 6 40.6 88.6
DATE 35 1.2% 9 25.7% 12 34.3 49.5
ADDED 10 0.3% 6 60.0% 11 9.3 5.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 37 1.2% 8 21.6% 15 176.0 445.9
CONFERENCE 14 0.5% 5 35.7% 30 4272.6 12683.5
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 9 0.3% 5 55.6% 38 43.0 28.3
ISSN 1 0.0% 0 0.0% 713 713.0 0.0
ISBN 2 0.1% 1 50.0% 30 30.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 84 2.8% 14 16.7% 10 83.7 439.4
EXACT PE 10 0.3% 3 30.0% 3 5.0 4.5
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% 14 14.0 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 344 13.0% 133 38.7% 6 99.1 846.8
Single 2,299 87.0% 718 31.2% 18 1195.2 20887.8
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 12 100% 4 33.3% 3 4.0 2.6
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 83.6%
LONG 1.8%
TAGS 0.5%
FIELDS 3.4%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 40.1%
2. First word of command is invalid 31.0%
3. FIND command with invalid index name 5.9%
4. Max. # of ports to a Z39 db are in use 4.1%
5. DISPLAY command contains invalid word 2.9%
6. Valid command at an inappropriate time 1.9%
7. PS command - no previous screen 1.9%
8. DISPLAY command - no FIND results 1.3%
9. NS of SHOW/EXP command-no next screen 1.1%
10. DISPLAY command-record numbers too large 1.0%
11. All others 8.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 18.6%
2. INSPEC DATABASES 9.3%
3. INSPEC BACKFILES 9.3%
4. INDEXES (INSPEC DBS) 9.3%
5. DISPLAY (INS/PSY DBS) 5.8%
6. MAIL 4.7%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.7%
8. GUIDE (INSPEC DBS) 3.5%
9. I034 3.5%
10. FIELDS (INSPEC DBS) 3.5%
11. All others 27.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.8%
2. First word of command is invalid 14.9%
3. DISPLAY command-first of >1 screen 8.5%
4. FIND command with invalid index name 6.4%
5. DISPLAY command - last of >1 screen 4.3%
6. NS of SHOW/EXP command-no next screen 4.3%
7. FIND command retrieves 1 book 3.5%
8. Help requested from SHOW SEARCH 2.8%
9. FIND command retrieves >1 book 2.8%
10. SET DB command entered w/o modifier 2.1%
11. All others 25.5%
Ten most frequent SHOW requests:
1. HISTORY 78.6%
2. INSPEC LOADING STATISTICS 7.1%
3. SEARCH 7.1%
4. MAIL STATUS 7.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)