MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/23/02 through 03/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 18 217 235
Davis 100 1 101
Irvine 51 0 51
Los Angeles 0 95 95
Riverside 0 5 5
San Diego 33 99 132
San Francisco 4 0 4
Santa Barbara 5 38 43
Santa Cruz 0 25 25
Lawrence Berkeley 0 39 39
Lawrence Livermore 0 30 30
Los Alamos 0 0 0
Other - UC 1 33 34
Other-Network UC n/a 274 274
_______ ______ _____
212 856 1,068
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 676 1,564 18,407
INS90 146 250 2,994
INS85 89 149 988
INS80 80 131 1,124
INS69 77 177 1,153
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 31 253
2-4 a.m. 17 35 213
4-6 a.m. 26 91 679
6-8 a.m. 55 117 897
8-10 a.m. 114 288 8,245
10-12 a.m. 190 349 2,755
12-2 p.m. 207 383 3,519
2-4 p.m. 192 388 3,379
4-6 p.m. 136 266 2,070
6-8 p.m. 48 112 1,197
8-10 p.m. 34 117 742
10-12 p.m. 32 94 717
__________ __________ __________ _________________
Total: 1,068 2,271 24,666
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 25 420 445
Davis 306 2 308
Irvine 148 0 148
Los Angeles 0 172 172
Riverside 0 22 22
San Diego 70 211 281
San Francisco 9 0 9
Santa Barbara 5 80 85
Santa Cruz 0 83 83
Lawrence Berkeley 0 74 74
Lawrence Livermore 0 78 78
Los Alamos 0 0 0
Other - UC 0 61 61
Other-Network UC n/a 505 505
_______ ______ _____
563 1,708 2,271
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 151 3,703 3,854
Davis 9,193 1 9,194
Irvine 2,638 0 2,638
Los Angeles 0 1,359 1,359
Riverside 0 67 67
San Diego 346 1,922 2,268
San Francisco 57 0 57
Santa Barbara 54 681 735
Santa Cruz 0 443 443
Lawrence Berkeley 0 659 659
Lawrence Livermore 0 380 380
Los Alamos 0 0 0
Other - UC 0 811 811
Other-Network UC n/a 2,201 2,201
_______ ______ _____
12,439 12,227 24,666
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 3.2
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) 11:11
Longest session recorded (minutes:seconds) 101:15
Average number of searches completed per session 2.1
Retrievals per search - median 7.0
Retrievals per search - average 218.5
Retrievals per search - standard deviation 1607.1
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 4.7%
Percent of long searches completed
(includes partial results) 78.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,012 29.0%
DISPLAY (excluding automatic displays) 2,685 38.6%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 41 0.6%
EXPLAIN 60 0.9%
SET/RESET 584 8.4%
SHOW 7 0.1%
ADD ON (AND, OR, AND NOT) 259 3.7%
LOGON or LOGOFF 1,003 14.4%
COMMENT 0 0.0%
SAVE 34 0.5%
USE 1 0.0%
OTHER 262 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 1,015 46.1% 202 19.9% 15 74.1 262.2
TITLE WORD 382 17.4% 182 47.6% 9 216.4 677.2
EXACT TITLE 12 0.5% 5 41.7% 1 57.0 146.8
JOURNAL 43 2.0% 10 23.3% 18 1076.1 3438.4
EXACT JOURNAL 19 0.9% 11 57.9% 88 382.3 549.8
SUBJECT 53 2.4% 22 41.5% 77 146.2 206.9
EXACT SUBJECT 4 0.2% 0 0.0% 10 1395.8 2777.5
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 1 0.0% 0 0.0% 58 58.0 0.0
KEYWORD 473 21.5% 98 20.7% 23 634.8 3551.2
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 7 0.3% 1 14.3% 60 69.0 77.1
DATE 56 2.5% 11 19.6% 7 131.3 304.4
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. 30 1.4% 12 40.0% 32 320.9 870.6
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 8 0.4% 2 25.0% 3 6.7 7.3
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 87 4.0% 16 18.4% 6 214.7 1638.1
EXACT PE 6 0.3% 0 0.0% 8 8.7 7.9
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 2 0.1% 1 50.0% 19 19.0 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 206 10.4% 68 33.0% 8 81.7 274.5
Single 1,784 89.6% 436 24.4% 17 293.5 2030.5
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 2 100% 1 50.0% 2 2.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 81.1%
LONG 5.5%
TAGS 0.1%
FIELDS 3.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.0%
COMMENTS 0.0%
Other 0.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.5%
Ten most frequent errors:
1. NS command - no next screen 50.7%
2. First word of command is invalid 27.2%
3. FIND command with invalid index name 6.9%
4. DISPLAY command contains invalid word 3.9%
5. Search term missing from search command 1.8%
6. Invalid SET DB INS command issued 1.6%
7. PS command - no previous screen 0.9%
8. SET command with invalid setting 0.7%
9. Add-on search, no index name after verb 0.7%
10. DISPLAY command-record numbers too large 0.5%
11. All others 5.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 23.3%
2. INSPEC DATABASES 11.7%
3. GUIDE (INSPEC DBS) 11.7%
4. INSPEC BACKFILES 11.7%
5. COMMANDS (INS/PSY/ABI/BIO DBS) 3.3%
6. I042 3.3%
7. PUBLICATION TYPES (INSPEC DBS) 3.3%
8. INDEXES (INSPEC DBS) 3.3%
9. DATABASES 3.3%
10. MAIL 1.7%
11. All others 23.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 35.6%
2. First word of command is invalid 15.8%
3. FIND command with zero results 6.9%
4. FIND command retrieves >1 book 5.9%
5. NS command - no next screen 5.0%
6. FIND command with invalid index name 4.0%
7. DISPLAY command - middle of >1 screen 3.0%
8. Multi-index search with zero results 3.0%
9. MAIL command entered w/o email address 3.0%
10. Valid command at an inappropriate time 2.0%
11. All others 15.8%
Ten most frequent SHOW requests:
1. HISTORY 42.9%
2. INSPEC LOADING STATISTICS 14.3%
3. SYSTEM NEWS 14.3%
4. DLA BULLETIN 14.3%
5. DATABASES 14.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)