MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/27/01 through 02/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 26 403 429
Davis 42 4 46
Irvine 70 0 70
Los Angeles 2 205 207
Riverside 9 5 14
San Diego 93 303 396
San Francisco 21 0 21
Santa Barbara 28 41 69
Santa Cruz 5 20 25
Lawrence Berkeley 0 155 155
Lawrence Livermore 0 78 78
Los Alamos 0 0 0
Other - UC 0 48 48
Other-Network UC n/a 442 442
_______ ______ _____
296 1,704 2,000
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,192 2,844 22,252
INS90 297 499 2,498
INS85 214 338 1,488
INS80 158 242 1,234
INS69 139 272 2,015
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 44 78 818
2-4 a.m. 33 60 460
4-6 a.m. 38 95 587
6-8 a.m. 103 248 1,791
8-10 a.m. 241 528 3,543
10-12 a.m. 324 680 4,848
12-2 p.m. 342 728 5,632
2-4 p.m. 347 754 5,096
4-6 p.m. 238 505 3,490
6-8 p.m. 124 202 1,477
8-10 p.m. 104 178 858
10-12 p.m. 62 139 887
__________ __________ __________ _________________
Total: 2,000 4,195 29,487
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 39 800 839
Davis 111 6 117
Irvine 205 0 205
Los Angeles 6 503 509
Riverside 19 8 27
San Diego 215 569 784
San Francisco 110 0 110
Santa Barbara 63 125 188
Santa Cruz 12 43 55
Lawrence Berkeley 0 257 257
Lawrence Livermore 0 170 170
Los Alamos 0 0 0
Other - UC 0 143 143
Other-Network UC n/a 791 791
_______ ______ _____
780 3,415 4,195
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 370 6,458 6,828
Davis 782 1 783
Irvine 1,621 0 1,621
Los Angeles 10 3,008 3,018
Riverside 125 62 187
San Diego 1,090 4,773 5,863
San Francisco 338 0 338
Santa Barbara 378 1,097 1,475
Santa Cruz 39 547 586
Lawrence Berkeley 0 1,189 1,189
Lawrence Livermore 0 2,063 2,063
Los Alamos 0 0 0
Other - UC 0 1,094 1,094
Other-Network UC n/a 4,442 4,442
_______ ______ _____
4,753 24,734 29,487
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 5.3
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) 6:52
Average session length (minutes:seconds) 11:35
Longest session recorded (minutes:seconds) 244:40
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 935.9
Retrievals per search - standard deviation 17169
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 71.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,814 30.7%
DISPLAY (excluding automatic displays) 4,370 35.2%
BROWSE 8 0.1%
SELECT 0 0.0%
HELP 80 0.6%
EXPLAIN 124 1.0%
SET/RESET 1,151 9.3%
SHOW 37 0.3%
ADD ON (AND, OR, AND NOT) 381 3.1%
LOGON or LOGOFF 1,795 14.5%
COMMENT 0 0.0%
SAVE 147 1.2%
USE 5 0.0%
OTHER 510 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 1,881 44.0% 457 24.3% 14 62.9 293.0
TITLE WORD 896 21.0% 382 42.6% 7 68.9 361.2
EXACT TITLE 41 1.0% 24 58.5% 3 19.4 53.8
JOURNAL 167 3.9% 55 32.9% 16 931.3 3328.8
EXACT JOURNAL 24 0.6% 12 50.0% 97 4713.1 8458.7
SUBJECT 122 2.9% 35 28.7% 22 992.2 3518.5
EXACT SUBJECT 5 0.1% 0 0.0% 8 3106.4 6929.4
THESAURUS 5 0.1% 1 20.0% 13 2769.3 5519.2
EXACT THESAURUS 10 0.2% 0 0.0% 7,374 5465.0 3107.6
KEYWORD 744 17.4% 139 18.7% 29 2999.5 31722.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 102 2.4% 12 11.8% 14 40.2 187.2
DATE 39 0.9% 16 41.0% 18 595.7 1776.9
ADDED 11 0.3% 6 54.5% 15 18.0 9.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 45 1.1% 6 13.3% 6 12.4 13.7
CONFERENCE 25 0.6% 5 20.0% 184 389.3 446.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 34 0.8% 7 20.6% 6 119.2 202.3
ISSN 1 0.0% 1 100% 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 106 2.5% 29 27.4% 5 47.7 191.9
EXACT PE 10 0.2% 2 20.0% 1 1.4 0.5
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 3 0.1% 0 0.0% 59 44.3 25.4
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 495 13.2% 163 32.9% 8 107.3 786.8
Single 3,263 86.8% 863 26.4% 17 928.6 16015.7
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 8 100% 2 25.0% 1 1.3 0.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 84.6%
LONG 3.0%
TAGS 0.2%
FIELDS 4.4%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 41.0%
2. First word of command is invalid 27.7%
3. FIND command with invalid index name 6.7%
4. Max. # of ports to a Z39 db are in use 3.3%
5. DISPLAY command contains invalid word 2.9%
6. PS command - no previous screen 1.8%
7. Search term missing from search command 1.8%
8. Add-on search, no index name after verb 1.6%
9. DISPLAY command-record numbers too large 1.2%
10. Valid command at an inappropriate time 1.1%
11. All others 10.9%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 14.5%
2. FIND (INSPEC DBS) 10.5%
3. LOCATE (INS/PSY DBS) 9.7%
4. GUIDE (INSPEC DBS) 8.9%
5. INDEXES (INSPEC DBS) 8.1%
6. INSPEC BACKFILES 6.5%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 5.6%
8. Unrecognized term 5.6%
9. MAIL 4.0%
10. CHEMICAL NAMES 2.4%
11. All others 24.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.4%
2. First word of command is invalid 13.7%
3. FIND command with invalid index name 6.9%
4. DISPLAY command-complete in one screen 5.9%
5. DISPLAY command-first of >1 screen 5.9%
6. DISPLAY command - middle of >1 screen 5.4%
7. DISPLAY command - last of >1 screen 5.4%
8. FIND command with zero results 4.9%
9. NS command - no next screen 3.4%
10. FIND command retrieves >1 book 2.9%
11. All others 17.2%
Ten most frequent SHOW requests:
1. HISTORY 64.9%
2. MAIL STATUS 16.2%
3. INSPEC NEWS 8.1%
4. SEARCH 5.4%
5. PAGESIZE 2.7%
6. DATABASES 2.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)