MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/31/01 through 04/06/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 256 260
Davis 24 0 24
Irvine 63 0 63
Los Angeles 0 99 99
Riverside 3 26 29
San Diego 40 129 169
San Francisco 7 0 7
Santa Barbara 0 97 97
Santa Cruz 9 34 43
Lawrence Berkeley 0 97 97
Lawrence Livermore 0 46 46
Los Alamos 0 0 0
Other - UC 5 66 71
Other-Network UC n/a 337 337
_______ ______ _____
155 1,187 1,342
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 830 2,002 16,949
INS90 200 387 2,427
INS85 137 273 1,287
INS80 92 190 1,341
INS69 83 178 1,401
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 34 53 398
2-4 a.m. 37 72 406
4-6 a.m. 40 57 393
6-8 a.m. 51 129 666
8-10 a.m. 142 349 2,643
10-12 a.m. 251 612 3,761
12-2 p.m. 189 411 1,874
2-4 p.m. 218 510 4,064
4-6 p.m. 183 365 4,789
6-8 p.m. 124 267 2,197
8-10 p.m. 30 80 1,005
10-12 p.m. 43 125 1,209
__________ __________ __________ _________________
Total: 1,342 3,030 23,405
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 4 537 541
Davis 113 0 113
Irvine 153 0 153
Los Angeles 0 235 235
Riverside 11 63 74
San Diego 104 343 447
San Francisco 12 0 12
Santa Barbara 0 180 180
Santa Cruz 18 80 98
Lawrence Berkeley 0 178 178
Lawrence Livermore 0 107 107
Los Alamos 0 0 0
Other - UC 7 168 175
Other-Network UC n/a 717 717
_______ ______ _____
422 2,608 3,030
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 124 4,402 4,526
Davis 495 0 495
Irvine 1,434 0 1,434
Los Angeles 0 1,109 1,109
Riverside 29 273 302
San Diego 357 2,960 3,317
San Francisco 99 0 99
Santa Barbara 0 2,875 2,875
Santa Cruz 49 628 677
Lawrence Berkeley 0 2,114 2,114
Lawrence Livermore 0 862 862
Los Alamos 0 0 0
Other - UC 45 1,000 1,045
Other-Network UC n/a 4,550 4,550
_______ ______ _____
2,632 20,773 23,405
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 5.2
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) 8:25
Average session length (minutes:seconds) 13:11
Longest session recorded (minutes:seconds) 511:15
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1242.4
Retrievals per search - standard deviation 20631
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 6.1%
Percent of long searches completed
(includes partial results) 73.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,774 30.9%
DISPLAY (excluding automatic displays) 3,369 37.6%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 64 0.7%
EXPLAIN 92 1.0%
SET/RESET 758 8.5%
SHOW 26 0.3%
ADD ON (AND, OR, AND NOT) 256 2.9%
LOGON or LOGOFF 1,237 13.8%
COMMENT 0 0.0%
SAVE 49 0.5%
USE 5 0.1%
OTHER 337 3.8%
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 1,384 45.1% 313 22.6% 15 77.0 290.0
TITLE WORD 655 21.3% 268 40.9% 6 190.5 1242.2
EXACT TITLE 26 0.8% 16 61.5% 1 19.1 54.4
JOURNAL 68 2.2% 28 41.2% 38 1858.3 5050.4
EXACT JOURNAL 56 1.8% 32 57.1% 6 1793.3 2650.1
SUBJECT 53 1.7% 13 24.5% 20 231.9 486.7
EXACT SUBJECT 3 0.1% 0 0.0% 25 5355.7 9238.2
THESAURUS 6 0.2% 2 33.3% 23 2856.8 5681.5
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 545 17.7% 82 15.0% 31 3937.2 36909.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 3 0.1% 0 0.0% 8 66.3 103.6
DATE 51 1.7% 7 13.7% 7 282.7 1731.9
ADDED 11 0.4% 4 36.4% 7 13.3 13.8
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 46 1.5% 15 32.6% 12 491.6 2464.7
CONFERENCE 8 0.3% 2 25.0% 400 673.0 911.2
LANGUAGE 3 0.1% 0 0.0% 417 1641.0 2482.7
CHEMICAL NAME 8 0.3% 1 12.5% 12 35.4 40.6
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 3 0.1% 2 66.7% 46 46.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 128 4.2% 26 20.3% 5 385.0 3719.6
EXACT PE 14 0.5% 0 0.0% 4 6.0 7.0
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% 34 34.0 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 342 12.5% 126 36.8% 5 168.1 1158.4
Single 2,385 87.5% 559 23.4% 17 1170.5 18693.2
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 82.7%
LONG 2.1%
TAGS 0.6%
FIELDS 4.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.4%
COMMENTS 0.0%
Other 0.8%
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 46.0%
2. First word of command is invalid 26.5%
3. DISPLAY command contains invalid word 4.5%
4. FIND command with invalid index name 4.4%
5. Search term missing from search command 2.6%
6. DISPLAY command-record numbers too large 2.1%
7. PS command - no previous screen 1.4%
8. DISPLAY command - no FIND results 1.3%
9. Max. # of ports to a Z39 db are in use 1.1%
10. NS of SHOW/EXP command-no next screen 0.9%
11. All others 9.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 20.7%
2. INSPEC DATABASES 10.9%
3. DATABASES 9.8%
4. INDEXES (INSPEC DBS) 8.7%
5. INSPEC BACKFILES 7.6%
6. GUIDE (INSPEC DBS) 6.5%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.3%
8. MAIL 3.3%
9. Unrecognized term 3.3%
10. 1752 3.3%
11. All others 21.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.0%
2. First word of command is invalid 14.1%
3. FIND command with zero results 9.6%
4. DISPLAY command - middle of >1 screen 7.1%
5. DISPLAY command - last of >1 screen 6.4%
6. FIND command retrieves >1 book 5.1%
7. FIND command with invalid index name 4.5%
8. Multi-index search with zero results 3.8%
9. NS command - no next screen 3.2%
10. FIND command retrieves 1 book 1.9%
11. All others 19.2%
Ten most frequent SHOW requests:
1. HISTORY 65.4%
2. MAIL STATUS 19.2%
3. SEARCH 7.7%
4. INSPEC LOADING STATISTICS 3.8%
5. DATABASES 3.8%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)