MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 10/01/01 through 10/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 34 1,326 1,360
Davis 233 19 252
Irvine 311 0 311
Los Angeles 3 509 512
Riverside 2 33 35
San Diego 204 523 727
San Francisco 78 0 78
Santa Barbara 12 121 133
Santa Cruz 12 110 122
Lawrence Berkeley 0 161 161
Lawrence Livermore 0 138 138
Los Alamos 0 0 0
Other - UC 0 159 159
Other-Network UC n/a 2,003 2,003
_______ ______ _____
889 5,102 5,991
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,774 8,380 68,711
INS90 851 1,484 8,989
INS85 551 849 3,827
INS80 423 740 4,891
INS69 392 764 4,907
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 98 247 1,420
2-4 a.m. 82 176 1,222
4-6 a.m. 92 267 2,400
6-8 a.m. 195 429 2,656
8-10 a.m. 775 1,465 8,450
10-12 a.m. 1,161 2,243 15,130
12-2 p.m. 967 1,954 13,667
2-4 p.m. 1,124 2,201 18,023
4-6 p.m. 827 1,717 15,638
6-8 p.m. 357 769 6,843
8-10 p.m. 181 432 3,453
10-12 p.m. 132 317 2,423
__________ __________ __________ _________________
Total: 5,991 12,217 91,325
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 104 2,637 2,741
Davis 606 53 659
Irvine 825 0 825
Los Angeles 6 1,064 1,070
Riverside 7 99 106
San Diego 505 1,303 1,808
San Francisco 167 0 167
Santa Barbara 22 225 247
Santa Cruz 16 236 252
Lawrence Berkeley 0 403 403
Lawrence Livermore 0 248 248
Los Alamos 0 0 0
Other - UC 0 366 366
Other-Network UC n/a 3,325 3,325
_______ ______ _____
2,258 9,959 12,217
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 815 26,258 27,073
Davis 3,665 328 3,993
Irvine 8,125 0 8,125
Los Angeles 6 8,401 8,407
Riverside 12 311 323
San Diego 2,455 12,537 14,992
San Francisco 1,414 0 1,414
Santa Barbara 58 2,107 2,165
Santa Cruz 66 1,220 1,286
Lawrence Berkeley 0 3,088 3,088
Lawrence Livermore 0 1,964 1,964
Los Alamos 0 0 0
Other - UC 0 2,718 2,718
Other-Network UC n/a 15,777 15,777
_______ ______ _____
16,616 74,709 91,325
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 3.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.5
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:29
Average session length (minutes:seconds) 13:11
Longest session recorded (minutes:seconds) 869:40
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 299.8
Retrievals per search - standard deviation 4442.1
Percent of searches completed with 0 results 29.1%
Percent of searches entered that are long 4.4%
Percent of long searches completed
(includes partial results) 73.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,068 30.5%
DISPLAY (excluding automatic displays) 12,791 35.2%
BROWSE 11 0.0%
SELECT 4 0.0%
HELP 250 0.7%
EXPLAIN 371 1.0%
SET/RESET 3,768 10.4%
SHOW 152 0.4%
ADD ON (AND, OR, AND NOT) 1,149 3.2%
LOGON or LOGOFF 4,893 13.5%
COMMENT 0 0.0%
SAVE 411 1.1%
USE 10 0.0%
OTHER 1,449 4.0%
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 5,273 43.3% 1,305 24.7% 17 73.3 266.6
TITLE WORD 2,646 21.7% 1,291 48.8% 5 498.9 9935.0
EXACT TITLE 77 0.6% 43 55.8% 1 22.1 69.1
JOURNAL 230 1.9% 96 41.7% 120 2217.2 7323.9
EXACT JOURNAL 184 1.5% 100 54.3% 279 1609.2 4290.9
SUBJECT 413 3.4% 120 29.1% 30 2022.7 11240.9
EXACT SUBJECT 18 0.1% 2 11.1% 13 275.6 639.2
THESAURUS 2 0.0% 0 0.0% 618 617.5 505.6
EXACT THESAURUS 29 0.2% 3 10.3% 740 895.8 1339.1
KEYWORD 2,154 17.7% 453 21.0% 22 904.8 6041.9
SUBFILE 36 0.3% 2 5.6% 30 46.7 44.5
FORM 61 0.5% 7 11.5% 23 72.4 154.1
DATE 272 2.2% 79 29.0% 10 77.4 215.8
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. 110 0.9% 22 20.0% 44 683.1 3532.7
CONFERENCE 32 0.3% 6 18.8% 77 966.3 2238.5
LANGUAGE 23 0.2% 2 8.7% 31 53.6 52.1
CHEMICAL NAME 60 0.5% 22 36.7% 35 330.2 651.3
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 4 0.0% 3 75.0% 237 237.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 461 3.8% 84 18.2% 6 85.0 404.9
EXACT PE 75 0.6% 9 12.0% 8 114.6 432.3
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 23 0.2% 0 0.0% 53 77.8 115.7
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 1,212 11.1% 455 37.5% 6 320.9 3495.0
Single 9,715 88.9% 2,726 28.1% 18 462.8 5695.8
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 11 100% 2 18.2% 2 1.9 1.1
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 81.5%
LONG 3.4%
TAGS 0.2%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.8%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 43.3%
2. First word of command is invalid 26.8%
3. FIND command with invalid index name 6.5%
4. Max. # of ports to a Z39 db are in use 3.8%
5. DISPLAY command contains invalid word 2.7%
6. PS command - no previous screen 1.8%
7. DISPLAY command - no FIND results 1.2%
8. Valid command at an inappropriate time 1.0%
9. Search term missing from search command 1.0%
10. DISPLAY command-record numbers too large 1.0%
11. All others 10.9%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.6%
2. INSPEC DATABASES 10.5%
3. GUIDE (INSPEC DBS) 10.2%
4. INSPEC BACKFILES 8.6%
5. INDEXES (INSPEC DBS) 8.1%
6. MAIL 5.1%
7. LOCATE (INS/PSY DBS) 4.0%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.0%
9. DATABASES 4.0%
10. Unrecognized term 3.5%
11. All others 27.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.6%
2. First word of command is invalid 10.6%
3. DISPLAY command - middle of >1 screen 7.7%
4. FIND command with invalid index name 7.2%
5. NS command - no next screen 5.2%
6. FIND command retrieves >1 book 4.8%
7. FIND command with zero results 4.3%
8. DISPLAY command - last of >1 screen 4.2%
9. DISPLAY command-first of >1 screen 2.9%
10. DISPLAY command-complete in one screen 2.3%
11. All others 25.1%
Ten most frequent SHOW requests:
1. HISTORY 68.8%
2. SEARCH 8.9%
3. INSPEC NEWS 5.4%
4. SETTINGS (INS/PSY DBS) 4.5%
5. INSPEC LOADING STATISTICS 2.7%
6. SYSTEM NEWS 2.7%
7. FORM NAMES (INSPEC DBS) 1.8%
8. MAIL STATUS 1.8%
9. PUBLICATION TYPES (INSPEC DBS) 0.9%
10. GLOSSARY 0.9%
11. All others 1.8%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)