MELVYL ABI DATABASE TELNET STATISTICS
Time period: 11/01/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 19 287 306
Davis 82 0 82
Irvine 63 0 63
Los Angeles 0 76 76
Riverside 9 2 11
San Diego 4 13 17
San Francisco 32 0 32
Santa Barbara 2 3 5
Santa Cruz 3 0 3
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 0 3 3
Other-Network UC n/a 168 168
_______ ______ _____
214 554 768
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 20 50 512
2-4 a.m. 5 6 424
4-6 a.m. 3 14 87
6-8 a.m. 14 35 255
8-10 a.m. 79 172 1,365
10-12 a.m. 128 377 2,747
12-2 p.m. 131 327 2,365
2-4 p.m. 148 325 4,511
4-6 p.m. 108 287 2,914
6-8 p.m. 61 243 3,505
8-10 p.m. 35 154 1,853
10-12 p.m. 36 170 1,200
__________ __________ __________ _________________
Total: 768 2,160 21,738
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 1,017 1,056
Davis 206 0 206
Irvine 170 0 170
Los Angeles 0 179 179
Riverside 18 6 24
San Diego 8 18 26
San Francisco 104 0 104
Santa Barbara 2 12 14
Santa Cruz 5 0 5
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 16 16
Other-Network UC n/a 351 351
_______ ______ _____
552 1,608 2,160
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 217 11,231 11,448
Davis 1,246 0 1,246
Irvine 1,492 0 1,492
Los Angeles 0 1,695 1,695
Riverside 55 241 296
San Diego 19 264 283
San Francisco 1,142 0 1,142
Santa Barbara 3 157 160
Santa Cruz 54 0 54
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 69 69
Los Alamos 0 0 0
Other - UC 0 190 190
Other-Network UC n/a 3,663 3,663
_______ ______ _____
4,228 17,510 21,738
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.3
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 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 7:24
Average session length (minutes:seconds) 10:59
Longest session recorded (minutes:seconds) 83:42
Average number of searches completed per session 2.8
Retrievals per search - median 4.0
Retrievals per search - average 2116.8
Retrievals per search - standard deviation 23385
Percent of searches completed with 0 results 31.1%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 81.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,872 26.7%
DISPLAY (excluding automatic displays) 2,923 41.6%
BROWSE 11 0.2%
SELECT 2 0.0%
HELP 104 1.5%
EXPLAIN 86 1.2%
SET/RESET 331 4.7%
SHOW 43 0.6%
ADD ON (AND, OR, AND NOT) 287 4.1%
LOGON or LOGOFF 976 13.9%
COMMENT 0 0.0%
SAVE 191 2.7%
USE 1 0.0%
OTHER 208 3.0%
2.1 Article Text
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DISPLAY TEXT commands 226
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 23
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 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 687 32.0% 243 35.4% 6 47.9 200.5
TITLE WORD 366 17.0% 147 40.2% 5 38.0 115.5
EXACT TITLE 31 1.4% 13 41.9% 2 97.8 179.6
JOURNAL 63 2.9% 29 46.0% 665 2524.1 4207.0
EXACT JOURNAL 63 2.9% 20 31.7% 399 2646.6 7323.8
SUBJECT 159 7.4% 79 49.7% 42 2108.6 5717.1
EXACT SUBJECT 16 0.7% 4 25.0% 8,045 11195.8 16495.2
KEYWORD 495 23.1% 80 16.2% 51 9155.9 52337.4
PUB TYPE 18 0.8% 5 27.8% 62 254.1 380.5
DATE 35 1.6% 9 25.7% 15 63.5 115.8
ADDED 96 4.5% 96 100% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 179 179.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 2 0.1% 0 0.0% 23,067 23066.5 32584.2
COMPANY NAME 26 1.2% 7 26.9% 274 857.7 1442.3
EX COMPANY NAME 5 0.2% 2 40.0% 979 773.7 355.6
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 49 2.3% 6 12.2% 7 48.5 107.4
EXACT PE 24 1.1% 2 8.3% 3 7.8 11.0
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 11 0.5% 1 9.1% 313 17695.0 54389.0
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 276 14.8% 151 54.7% 5 1552.3 15445.3
Single 1,588 85.2% 436 27.5% 18 3641.2 31423.4
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:
SUBJECT 11 100% 7 63.6% 5 8.0 7.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 87.8%
LONG 3.2%
TAGS 0.0%
FIELDS 1.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. First word of command is invalid 31.6%
2. NS command - no next screen 23.3%
3. DISPLAY command - no FIND results 13.9%
4. FIND command with invalid index name 10.8%
5. DISPLAY command contains invalid word 3.7%
6. PS command - no previous screen 2.6%
7. Max. # of ports to a Z39 db are in use 1.4%
8. Valid command at an inappropriate time 1.0%
9. DISPLAY command-record numbers too large 1.0%
10. BROWSE command with invalid index name 0.9%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 29.1%
2. INDEXES (ABI DB) 14.0%
3. FIND (ABI DB) 11.6%
4. LOCATE (ARTICLE DBS) 5.8%
5. Unrecognized term 5.8%
6. COMMANDS (ABI/PSY DBS) 4.7%
7. ADDON SEARCH 4.7%
8. DATE (ABI DB) 3.5%
9. ABI/INFORM DB 2.3%
10. DISPLAY (ABI DB) 2.3%
11. All others 16.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 30.5%
2. First word of command is invalid 16.8%
3. FIND command with invalid index name 7.4%
4. FIND command with zero results 7.4%
5. PS command - no previous screen 4.7%
6. FIND command retrieves >1 book 4.7%
7. DISPLAY command - middle of >1 screen 4.7%
8. DISPLAY command-complete in one screen 3.2%
9. NS command - no next screen 1.6%
10. DISPLAY command-first of >1 screen 1.6%
11. All others 17.4%
Ten most frequent SHOW requests:
1. HISTORY 33.3%
2. SEARCH 27.8%
3. GLOSSARY 11.1%
4. ABI NEWS 8.3%
5. MAIL STATUS 8.3%
6. PUBLICATION TYPES (ABI DB) 2.8%
7. SETTINGS (ABI DB) 2.8%
8. SYSTEM NEWS 2.8%
9. DATABASES 2.8%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)