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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:+ {9 ~3 D& `& ?5 A
to do-business ! M( i( f! C+ g, i7 g4 d) Q; \: I9 @
rt random 3607 u4 a+ x" |; ~
fd 12 [7 m$ l+ \( i% M9 `; i! ?8 V6 L
ifelse(other turtles-here != nobody)[
/ q0 B: O/ N; B0 f   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
# K- B# s& _. Y7 x0 m+ V  r   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , r8 [6 x) a# R& O
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 a6 F& w* {, M  c8 K* ]4 [   set [trade-record-one-len] of self length [trade-record-one] of self! J( @, s) Y4 @2 Z- Q
   set trade-record-current( list (timer) (random money-upper-limit))
& T& C) l& @% N) n! w9 P6 T; K, C+ D* [% N+ [( m* w
问题的提示如下:
8 i0 N9 K' {, T: Z* g% d8 V5 b9 i
; l1 f. t' Z1 F7 Z! @/ u& v1 [error while turtle 50 running OF in procedure DO-BUSINESS
, n  F2 }5 m% o5 {, g$ \  called by procedure GO
! B+ v( g: D$ B* ~OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 S' |/ y  h7 ~6 E; A$ S  s4 {
(halted running of go)9 J4 c: B. k: p0 o4 J
7 G" Z  I0 g/ t  j
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
) Y7 V1 ^( G: Y; N# @另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
" h  q4 Q( |) [; u. s" |globals[7 g3 |2 f: _5 a8 F
xmax4 e& D- ~+ ?/ ^3 r* h6 y3 W
ymax1 \- `0 K2 V( v: z2 c9 F
global-reputation-list
4 `6 P9 m# J3 @1 }' D: F# t/ c& X. ?4 P  I, O) _# d* W
;;
每一个turtle的全局声誉都存在此LIST
2 a4 B: Y% U2 E* ~credibility-list
4 R5 r, h0 D; Q' |+ Q( I;;
每一个turtle的评价可信度
$ o; [" W9 s8 G2 t4 v) i( B* j, _honest-service; j7 ]* I  o5 y! f! H* ^
unhonest-service
/ Y# Y# h, w  ooscillation
( u2 c# {5 F1 J5 j4 C/ rrand-dynamic9 G: n3 W! e9 w8 |, w
]: I8 L$ L) Q* ^$ O  m

; y% w; e& q; H4 O- {" F* m' {- Dturtles-own[0 D! N. O2 x7 F. @
trade-record-all' ?7 F- L# e2 P; K) P  y8 S+ L% L
;;a list of lists,
trade-record-one组成
$ `: r6 n8 t- Q% j, H, u* ?1 htrade-record-one$ Q6 C  q8 }4 r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ p+ F: S; j0 r' M* e( o) H8 j1 |

7 y2 w6 h5 {- ^  v& Q) Z;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]7 q# W# l: s* A2 r6 T; U
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]. v2 T$ Z$ @  G0 @% D
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
1 {% Z2 g$ L& N" h; wneighbor-total6 q1 p* y+ b2 I" w
;;
记录该turtle的邻居节点的数目( f, [; C6 I3 d" N5 d
trade-time! \% q' I# `0 J' H- ~
;;
当前发生交易的turtle的交易时间
3 v) }  H6 M% eappraise-give
  @4 N& H6 T( N2 A* g  q' b;;
当前发生交易时给出的评价- q1 ~# e4 E' D5 L% f2 x1 U; W# y
appraise-receive- e& @, O+ P( L: r
;;
当前发生交易时收到的评价
0 b8 o. v1 _0 _9 X  A5 Z  Zappraise-time
( V. n6 x; A* K  f;;
当前发生交易时的评价时间4 P8 T/ L7 G5 |8 m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% B& g/ V' R) Q  e/ R  rtrade-times-total" ]+ m5 z+ ]% y( b' l) l
;;
与当前turtle的交易总次数
" v" Z  q# \& ?3 @) y* ztrade-money-total
1 F6 \7 T1 R$ X$ q1 _" N6 s" i;;
与当前turtle的交易总金额2 m& S7 g" d  Y2 G
local-reputation4 k9 z/ l: x5 F' K) I: W8 }
global-reputation. m3 l' V4 s- L/ i" a" h
credibility
  d' I% Z$ o9 n* V;;
评价可信度,每次交易后都需要更新* H3 ^* A: _$ j! Z
credibility-all0 Z3 A( l1 D: t% l2 c) N8 U, ^
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据- {" @: u7 ^+ {4 W  h+ h4 w
! D& T' b$ `$ ~' B4 o
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
; V/ Q& J- k& Q+ C9 Scredibility-one4 d: M' |" E- @  e% `. e5 e
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
, O0 m1 _/ q2 hglobal-proportion
* e6 p! W1 B1 y* q2 ncustomer
# A( o/ r+ U& I" z; c( ~# X2 ucustomer-no
# c/ ]& N7 N- p. X! s) R9 x9 Gtrust-ok7 G! A. ^, z- `
trade-record-one-len;;trade-record-one的长度  R/ ^1 A* h; V- ]; t. u
]
0 f* N8 q8 S/ v/ B" r. w7 k' J' i; f# K. H$ A  N! l  [
;;setup procedure
5 ]4 p4 g% I$ t1 {- K! U' G( E, L4 X* v$ s1 J) ?
to setup
+ \' W' u9 A1 s: {  m
3 l5 L$ H2 r( j/ Rca

8 m; r! L2 p+ x- Z) w: i+ n
8 O& }) P: d  t  z( minitialize-settings

) u; E) H! B2 n% |. V, Y6 j. N. Z% d# |) M3 e
crt people [setup-turtles]

1 g% R& X- a' g; C3 s) A7 I7 u' r4 g* K, n
reset-timer
/ e4 k) ], w( v# ~: w" Y
) q! F, {2 t' O0 N0 R* x* Y
poll-class

& r& z! k, B; _0 d- @- `( g, v: s$ ~' ^( x1 k) o
setup-plots
% r8 r3 H7 U5 e, o/ R3 m9 x' w

& R3 t- g9 d, Tdo-plots
+ R9 a0 o( T% ~; P7 L& ^  O
end9 F- z3 i: l$ W" k+ A
% r6 g% I- b( M  N7 {* K
to initialize-settings
: k9 p6 B: y( z. G1 n9 c* o* V* v! ]3 C" p3 u( @2 B" Y7 \: J
set global-reputation-list []

; M7 d5 B( \' ?; z* k' d! Y3 O. i  e1 B0 u' H
set credibility-list n-values people [0.5]
6 {, S( C, E) n/ m  D6 }) i' X" D
: Z5 R- N" W& w* n; j$ M
set honest-service 0

  B. O% L3 @7 v
5 X: S$ }1 A$ z9 x% W& uset unhonest-service 0

- _: v) D. G9 a5 W
% ~- h, L( m) u1 H2 {/ }* vset oscillation 0

' ?. G0 ^" G: T, y# R0 u% H" O4 M& s
/ V) R7 E! R* tset rand-dynamic 0

' b" {7 ^4 O8 t& L9 X) {( o5 Vend
# C1 ?9 j; K, g' I9 d- G
/ @, a9 o9 k# _8 u, E7 |: V6 r( jto setup-turtles
0 O/ h4 N! ]1 K) C! Wset shape "person"
. m/ m' p; H+ y/ }0 H$ Ysetxy random-xcor random-ycor+ D$ P" N% l8 j- Y) h8 n: x* q
set trade-record-one []
1 Y( g5 P2 H) _

* v1 y8 Q: O1 Z( X+ |8 {set trade-record-all n-values people [(list (? + 1) 0 0)] . w& B- o0 M) D- d- {0 J" }/ w5 ^: p" g2 T& E

$ f. Y* x+ A, F3 fset trade-record-current []
4 A( l1 u4 j; |" c* s9 o7 N3 zset credibility-receive [], K0 V6 i% r9 X: y
set local-reputation 0.5
9 r7 ]4 Q& E( f# U2 x( kset neighbor-total 0! l* X, \1 b1 s$ G  m
set trade-times-total 03 q, _$ t( U$ I9 a; S! n- T
set trade-money-total 0# z5 K* j# j" `' Y+ g
set customer nobody& P1 n- P2 v/ _, B  f* Q: |9 Y( L% `! D
set credibility-all n-values people [creat-credibility]4 A9 \" B6 l- _$ I0 L  ^, H
set credibility n-values people [-1]
6 p; t8 X9 F# N, \get-color, T  d! [+ v1 A7 n3 L& j
* F0 R  F0 R6 A& `  M) V
end
3 K6 f: ?4 z7 Y' v7 e4 U4 V4 X2 y$ w2 R8 e5 K- w
to-report creat-credibility) f: L% e; ^: L* Z' r9 ]
report n-values people [0.5]
( T- a  L: B, h; aend
! n1 D: I# q: |/ V+ A9 Q# L% F  s9 O3 `8 s1 Z7 S+ ?7 P& R
to setup-plots4 ~) ^% q, ^) r: L

! S* h2 E1 ?$ T$ U, mset xmax 30

! A8 Q! S0 n" r6 i/ I( A) @$ t& T9 j* C4 C. f0 e7 @6 g
set ymax 1.0

3 Q/ G3 P0 Q! y+ N0 a
. {( y; O7 |+ T8 o9 @4 eclear-all-plots
) `. D" S* x  h5 d: ~: w
  q) x+ B7 Y2 {* B) H; U# v
setup-plot1

3 O+ C4 g7 ~3 t3 x4 F( @# }. y5 _1 A0 z* I; _
setup-plot2
' M, J9 }6 ^" H- ?1 M' h( j9 k
# t: y8 a- _% @8 b
setup-plot3

- E: N  w, G& Wend
- ^# L4 w+ j% [. e% _( s9 @" ?5 \+ Z2 M+ ^
;;run time procedures
2 g# T. W9 h6 i! V
7 ?! b9 ?; W9 o1 d1 k, ~0 ]to go
" a6 h" L( V& Q7 g3 o: u! |  C! ~0 ?! H# a! O8 l4 a2 o
ask turtles [do-business]

: X+ k" r" @2 [+ b6 l- oend
- |) b9 z0 Q/ F/ E& m) a" S1 k& q9 G- w5 Q3 b
to do-business : s6 n$ `3 y# h) o2 @

, z3 v6 g: W" r
3 E) J6 H! b3 B) o; ?+ Jrt random 360

9 _2 _% W, }! p" f5 N0 U/ n: X  S6 J: c, q/ ~: D
fd 1

2 M; i; y- a  A$ n3 j3 J) |# N8 _( p+ s9 o8 f
ifelse(other turtles-here != nobody)[

+ }5 ?! k$ F1 o% w% ~1 b1 v
7 J+ ~( M& U% L$ N" }; yset customer one-of other turtles-here
+ V9 P5 s; g9 G9 ?2 l
9 l9 y5 T" H. z5 \! y
;; set [customer] of customer myself
8 U& E. j) X) e
/ ]! ]1 m1 [! F# i* n; ]
set [trade-record-one] of self item (([who] of customer) - 1)
- j, q# ^: R4 p5 C; l[trade-record-all]of self
- _& }+ `' ^. {9 I7 V6 h  V;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ \( X8 m* h* ^  u9 Z3 ?6 v9 q$ y  \5 `( ]: h
set [trade-record-one] of customer item (([who] of self) - 1): ^0 t+ G2 O+ }- i2 O
[trade-record-all]of customer
# z* R" o( ]( F" k
, a+ Q, N, `# |) U& K# D- i' i
set [trade-record-one-len] of self length [trade-record-one] of self

! k: B( I6 _: U8 U+ y# p8 S$ q8 r. R7 t. r" a3 }8 `+ ]
set trade-record-current( list (timer) (random money-upper-limit))

( L- ]" H  F' ~& q
# L1 a9 t( B' B: N2 ]' B3 Pask self [do-trust]
6 A% e8 l  M: Z, K! F* S; d;;
先求ij的信任度
' A/ O# Y' D4 Y! B1 L
9 M) d& q8 j$ @6 |  m$ I7 uif ([trust-ok] of self)
: m+ m" k4 m8 U- ~;;
根据ij的信任度来决定是否与j进行交易[3 C) F; J! j, b2 ^4 k$ p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 S5 f4 }* Y9 `. j7 Q* m* Z5 U* i
[

; I+ o1 _- D- n# R2 @9 e. H1 ~' e9 N
do-trade

3 U* H% A0 I  c% H2 n/ f: E" A6 h( `# A* o( ]
update-credibility-ijl
1 u) m7 ~, Q  m  R% t1 ?1 c

( v% U* G$ m* Y+ O4 Zupdate-credibility-list
0 w; [) `) M- E* e) ?) e
+ d9 U# E6 h4 X' R8 w" E" a
) [; C6 m1 x# b$ I: |, {2 e5 ?
update-global-reputation-list

  x7 d* P0 u* b. y6 O/ {6 T" x6 Z1 h
poll-class
. W# q( X+ C0 r! \2 F3 l9 ^

+ `8 c; @8 x0 m0 N- L! t6 @get-color

% |! @, U3 f8 t3 h- E/ b1 p7 i# K5 v; Z9 o8 d: Y  f7 N
]]
- I+ i% T: L  Y
" y. }0 _( r$ q* r, K;;
如果所得的信任度满足条件,则进行交易$ S1 \( \+ B" p
0 a# q, ?1 t1 |  f9 N/ G
[

( P+ \! z) I; T& `/ Y9 g+ T- i2 y% g' B- ]5 \
rt random 360
+ x- l6 k9 y( [, M: ^& m5 X& L4 f

& ~# ]2 z% u7 ~9 {" lfd 1

% v; `5 M& b& B4 ^0 y$ X2 f0 u
0 B( j8 u6 a: V5 k/ S# P$ D]
1 c  N4 b; l8 V7 ~1 [" g

' v$ @$ r7 x  n3 {. R. r" a$ Mend
2 R: ]/ N  Q- p8 B+ ^' s. W0 n( H  J
$ g/ l7 p" N5 A4 n8 g
to do-trust ( \) n. p$ t* I5 X2 o9 \
set trust-ok False' ?* P( O8 W4 x& ]" @4 A
9 ^9 j* [/ ^2 z$ X

7 a# R0 O  y2 N% t# ^. V" ]let max-trade-times 0
( H6 z& f2 [* p! bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% y1 z# ^' C- j8 L$ {
let max-trade-money 0
' b$ r: o3 S9 }, U+ Y" vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- ~4 m0 C# n( z8 U) @  ~2 c$ clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ v3 @1 @4 C4 B  @% q% j
: F- p$ ?; E% y" i' v5 O

! _: b* d9 j+ j4 D- @3 O1 m! R0 hget-global-proportion& W' y$ H6 S+ M2 }$ l. Z8 G& W
let trust-value3 x( F7 U. X" K: K$ G% Y- I
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

0 j) R3 q9 F* X: G: o4 O) Mif(trust-value > trade-trust-value)" t' }, \5 U: y! q0 f! W5 \
[set trust-ok true]- B9 X2 I! e+ p' }* C
end
# E. v4 t- e& o9 Z7 B- t, l  g8 v
7 k' f! \: e2 b$ w0 B% uto get-global-proportion
! h$ [( b$ u+ y" H" D5 Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, y. b9 k( o9 Q) K  i7 r( l" a[set global-proportion 0]+ S; B# {& R' L. F5 O) ^" y* C
[let i 0" K( m! T7 D+ [3 M
let sum-money 0% D) `- s, p- ]" S+ O
while[ i < people]' }, S2 n7 z$ R/ X2 e/ E& p' B
[
, B' T- K( F4 n5 S8 f3 n" ?4 g% M0 q* ]if( length (item i% y- `; U% p, J. c# |
[trade-record-all] of customer) > 3 )
$ `( t4 b0 O; k! L
[3 ~/ y, _" f8 j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ f+ B+ O8 x4 e1 a3 p5 t
]
' s0 E- D, c) f! ]]
0 C, |9 c9 u; U3 Tlet j 0
' f3 Z5 t& U# r# C+ D, alet note 0# a4 S4 X0 m6 F. y+ _
while[ j < people]: u" F# y9 n2 p8 P  q% H- p
[
9 F! J' Z' |- K2 |" v) w& \' J; @if( length (item i/ X  `- x% m: i; z/ u5 C
[trade-record-all] of customer) > 3 )

3 ?3 K8 B5 B5 V3 e. t[
1 N8 u) n( h+ K$ s) D4 R7 W2 iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% h1 M& _6 O6 i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# L) j! z5 V) P8 I# {# c* J/ P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ @  d2 N: d& \
]
% m' \$ P& d+ Z9 h]
+ x; E; u" R3 \8 Xset global-proportion note9 w4 h4 N% E- |
]! K7 Z! s  z$ i
end1 f5 g- t4 F2 w5 U4 r3 W7 P, E- R

" `( D8 z4 u% r  q* ito do-trade3 `) Y3 `- d7 a+ L5 O
;;
这个过程实际上是给双方作出评价的过程
, A6 [. f+ g  l% O: A$ T+ l9 I' zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( z1 C9 O. ]3 H3 X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 Q" S# |* ~2 z( U- N0 Rset trade-record-current lput(timer) trade-record-current% }/ K$ B$ `% v' g% [
;;
评价时间  X- v; D; A" @" l2 S, j
ask myself [
  E: E* n  r) lupdate-local-reputation
) B. [+ R  z: A" U+ tset trade-record-current lput([local-reputation] of myself) trade-record-current
6 z1 K: s1 @! ?0 J/ ?* z: L, l]
# R- @1 |+ m  j: k6 ?1 pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' P1 l; V6 i* ]" P;;
将此次交易的记录加入到trade-record-one7 Q( [6 t9 `% x; D2 b2 G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  C( w2 q4 Y+ j
let note (item 2 trade-record-current )
1 R2 }  Z, b( |. Lset trade-record-current
* o, n6 `3 `2 v9 @3 p& \. O2 C% o(replace-item 2 trade-record-current (item 3 trade-record-current))

% b& Y) m" z& W* D4 Lset trade-record-current6 N4 M9 H5 e' S$ N7 f. U7 }
(replace-item 3 trade-record-current note)
$ s; W. ]* [2 s- ~+ b) {% ?) @8 H, w# Y- L! U2 O; ?9 c3 ]) ~6 R

# t0 n+ n* ~" D. i6 L$ m: e, sask customer [
% c8 t7 m6 u$ Y0 {  uupdate-local-reputation3 q' i* [* n" K7 e+ N
set trade-record-current& e6 Q/ z' t7 u* D/ g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& |% v2 |3 e3 Y) e8 g$ g8 L& ]/ J]
( m5 q& X$ {' B+ k  n4 p- i% S
/ [# H& Q9 j2 [0 B

) l" p, e$ M3 S5 [+ I6 Dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- D- _. r! Z! Z# _+ M

! I* Y; a5 r3 b# `$ Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 I9 e+ R4 `, a" [; E
;;
将此次交易的记录加入到customertrade-record-all
) P0 u5 M  q# b% X  Y, Q6 y" j+ c* Aend
  p* R6 Q5 B$ `/ J* H6 Z: C, B+ @  {$ Y
to update-local-reputation" H4 o$ m; j- i. _! \- e& |. D2 Z
set [trade-record-one-len] of myself length [trade-record-one] of myself6 Z7 X/ U+ c7 W5 T0 ]# O
/ V, C, C$ U. t  w: ]
. T% ~* h+ K1 y6 W) M
;;if [trade-record-one-len] of myself > 3

3 d: _# q9 ]- T$ }* G1 Q+ G) D, j% gupdate-neighbor-total
2 N5 e/ o; o/ P5 m;;
更新邻居节点的数目,在此进行, a5 W- D' ^2 {, B1 ~; J: `' w
let i 3
; |3 k  D! Z! l- Xlet sum-time 0
. s! L5 y; s* h- H6 Q" T( A  u( Iwhile[i < [trade-record-one-len] of myself]
% y$ w4 S# J9 S& P* M[
) W7 k4 [2 m" E: X" rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 Y& N- L* b2 P5 D. Dset i
, C/ z, _/ E2 B/ z4 D( i + 1)
7 N$ I$ B6 K, d
]
$ L+ j; ~3 ?$ @& {let j 33 C0 r* Y5 \6 j# q/ a) T  r" V
let sum-money 00 t9 p( Y4 f0 o% W: c# s4 B
while[j < [trade-record-one-len] of myself]
( A2 u0 Y2 F, ?* e" t0 V[2 _, r, k4 r5 o2 I% K4 K, m) A; k
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 K# z2 Z. j& O  K5 o5 ]set j
# P/ u2 E  q# u' S+ I. x( j + 1)
& w# v' r& j, p9 Q. R, ~
]
; K# w5 ^6 B9 C2 olet k 3
8 v. ]) a/ {) D5 v* }let power 0% V* U% J$ r/ U" L3 G- B" L$ g4 g! s
let local 0
% i: B2 e# ^1 s+ C' {9 Cwhile [k <[trade-record-one-len] of myself]) ~; {# {" V8 W. S4 Y
[
$ T3 ^3 z+ ]9 ?0 cset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
7 A5 B$ d) f1 W4 {set k (k + 1)$ _$ [" }0 Y, r
]
" x) F" X3 J& @# \set [local-reputation] of myself (local)2 ]+ R! C( o7 U3 z! ]0 H& w
end
) }$ a$ t+ @& `# h3 u* i
* w) i/ F1 N& p' T% Yto update-neighbor-total
+ `6 K. k. t) D, n2 t
: \. m: M5 ?- _/ X2 W1 I4 Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  r5 }) h) B2 `' G$ o" d; Y7 C
! l) h. R  l* t5 X
9 a. S. Z3 Z, d  ]4 R/ J. o
end
# f0 b4 ^: n& s2 u5 u" m' J5 G
  e. z: B: m' H  \) N) Ito update-credibility-ijl & n9 v8 j  ?4 D1 u4 J
  R. c5 k% Q" x6 d  ~; a  q
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
9 |' f. O0 P0 D* ?8 alet l 0: ]! @" j6 Y, o$ @( m1 l! D9 H$ ^
while[ l < people ]3 \# o' f5 Q' F# t: A; f0 ^
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价: ^% X5 u- o! A/ N" h
[
; k3 d7 E% B: D- X; o- c0 t; a" B/ Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' G; j7 J0 m6 t3 y' rif (trade-record-one-j-l-len > 3)9 G0 u- m! y5 Q( D; ~
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one3 a$ W) b8 f; A% V. y" \$ r/ i% J
let i 3
5 U$ }5 W/ m0 D$ g6 mlet sum-time 0) Z7 O8 F. }# I5 A( e
while[i < trade-record-one-len]
+ C9 C+ B, y' F' Z8 C) T$ U* A0 r$ D[! g2 V* H0 s( r2 B! U; V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): x) b4 p% f- t; z% b$ y" s5 a
set i
% T0 o2 s) m) _( i + 1)

" ?- x% l/ |. o$ w  D& A" I]  K+ r* p/ a( w/ z
let credibility-i-j-l 0
: G4 j4 R1 c- ^1 D9 e! ?' x& O;;i
评价(jjl的评价)/ u. V/ n$ |& l7 d* [5 [
let j 3
) T* d: f+ T: s8 k/ z( O+ m* S1 dlet k 46 t6 o: \. l" r7 k
while[j < trade-record-one-len]; a- W" V4 c" b$ i6 o( l
[
, Q$ f( p& q) o+ K7 ?while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉" r6 }9 X" C- b4 }
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
# T* y% H6 y- J9 z! kset j
, j) V) e& L. p( t( j + 1)

5 L6 a: M+ L6 |2 [  s]
; m% [- w( Z3 l+ D/ w1 }( `set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( c* y9 |! k: l9 H. }7 Q' G6 e- @
% d' F: i! F. ]% o1 |+ T
, \) I7 T% |- f+ I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% p. L  H8 z9 q" t! K
;;
及时更新il的评价质量的评价
8 Z- m: g7 V1 c0 @8 b" Z( y5 xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- J3 o8 T( E) N9 fset l (l + 1)" G: U* ~/ o$ O( B$ d0 M' ?" L6 u/ `
]
& ?6 K1 T7 Q; Q" V4 Vend
, {9 r7 z6 v# N  m2 s2 L% D
5 c) ~- N5 T0 |3 G: bto update-credibility-list
1 c. N, A9 T* }' l: i! F8 \, @let i 0
6 j" V4 s7 a: u/ ^" U2 t3 pwhile[i < people]
  M% Y) ]4 M$ x' Z0 f; G+ ^' d[
2 O2 q% K3 r' b% Ulet j 0; J  r' |% K4 \: Y
let note 0/ l  ^5 u+ u  o# k! O$ T0 F! Q
let k 0: R  V- r9 }: M" z- T' l+ \* [  C6 L
;;
计作出过评价的邻居节点的数目" F# \. J* |# z1 ?3 r" s! f
while[j < people]9 M) N( A4 Q. P
[5 I- V2 b( P' m$ U
if (item j( [credibility] of turtle (i + 1)) != -1)
; S- z" J$ {* I1 p2 V4 t. a;;
判断是否给本turtle的评价质量做出过评价的节点( U( j; S; D6 i
[set note (note + item j ([credibility]of turtle (i + 1))), r$ k: r& g3 k. g
;;*(exp (-(people - 2)))/(people - 2))]

3 ~% _2 v& `' |+ }1 Gset k (k + 1)  a/ ?, y: m  }& g4 i' T9 l* i- h/ R% }6 N
]
! W! C7 o: o( V. n- @set j (j + 1)
* {+ u+ [8 G5 X! m! j/ M" W]7 H/ |0 \' F7 c
set note (note *(exp (- (1 / k)))/ k): _+ V+ @4 P& M; L( F5 j' ~
set credibility-list (replace-item i credibility-list note)
' S! F  u& P& ^/ F5 lset i (i + 1)1 }9 K& l2 j! J9 \" e
]; O+ x2 k" k4 `3 s
end
, z$ Q  Q, r1 K, s
( x# r' y- o! ?) |1 \: s" n" Z, t7 rto update-global-reputation-list; j/ Z  F+ g0 n5 T4 y! |$ E
let j 0
. Z( {- Z& z8 ~: y3 s& iwhile[j < people]
4 \/ I3 Y) S/ i$ v. s: l/ e7 q[
3 m& B! a' {3 m2 o# G' F7 Vlet new 00 W1 t7 o. K  k- T9 x( Y8 P
;;
暂存新的一个全局声誉+ J9 {6 I9 _$ |) J/ K/ G0 ^: @
let i 0( @8 |3 t0 \9 J
let sum-money 02 [3 i' T) G) H6 R
let credibility-money 01 ~' Z* C7 Y% g! a
while [i < people]
) ]) G# a  L$ {  c$ [& s[! G/ s8 m  k8 o8 }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% B0 P6 m/ j0 J/ }9 a) ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 I0 H( f4 |+ J% i* _set i (i + 1)
" l5 M6 c. R1 A) T1 G]
4 i0 o: X: h* B8 J8 P) Blet k 0
" c5 R& j! f  E7 m4 llet new1 0$ J0 x1 j" R0 a
while [k < people]2 N1 c& b) X$ y/ |1 }
[
- \+ |6 w6 \% t- ?+ B. i' r6 g" Kset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)/ f, J+ T* M; w/ g
set k (k + 1)5 C3 O: I+ W+ r. G
]+ V5 F' t6 S! i3 x, v) r; L1 L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: R  y2 j9 A3 t& ^. U# Z) ?set global-reputation-list (replace-item j global-reputation-list new)
# e$ i  F7 _( I# S/ j7 E0 x' Uset j (j + 1)
2 c& b$ ~7 L! C  \. \; s]
% `+ f9 n7 Y+ s" F6 X* p  i% y+ Oend
* q7 z5 g& `$ W6 o! ~  d: s9 j" r9 p- |" [8 M

2 u: ^/ `1 e: `9 o8 v3 |- T, C8 ]; z) a6 e4 n$ M# o$ {" y
to get-color2 j0 s  U& E+ X9 i0 D
- a. ]$ d4 f& ]$ d# x
set color blue
% ~! ^0 ]" ^& M# {! W" B
end
. g- Z/ ^5 P2 b0 c6 L
' f0 E. ~$ J6 q; Sto poll-class& V0 f# ~8 H: C
end- A/ F7 n6 v$ ^8 l3 m* o9 ]2 b
( @8 u$ ]( A' Q) }# Q- r" v4 i% a
to setup-plot1
5 i- o! O4 p4 F1 k
. q; j, @. c# C" vset-current-plot "Trends-of-Local-reputation"

1 v! t, c+ w  g6 k' Q
2 R" |& F* I: h$ g7 @/ {set-plot-x-range 0 xmax

: R4 S, m5 I4 v* G( Q- R, P5 g( S, R  W' {* a0 ?
set-plot-y-range 0.0 ymax
" r  z. |$ Z& L: R4 c3 B
end
5 U; C4 [9 J; p% [2 `
& t# K2 N4 K, ]6 d! \to setup-plot2& z. |9 u& Q$ i$ B
# r- V+ Z. z& `) c8 C# `
set-current-plot "Trends-of-global-reputation"

* i+ g9 R3 y9 [7 `+ W4 m' z  r/ d6 Y
6 p  z: ^3 x7 m. X" oset-plot-x-range 0 xmax
2 i, ]5 k  Y# x+ ^* }$ b7 x
. h! Z! ]! [& ^1 S4 Z, m: b+ m
set-plot-y-range 0.0 ymax

( ~: |3 R; t  G4 A; V8 h: ]end% R) n, N) s9 d: g8 l; x

' G! _; P7 {! ]& t: ~' `# H& o/ B4 G* ito setup-plot3
' h! s) X( X  G  l- D% o! d; X* n2 o. G, S5 r
set-current-plot "Trends-of-credibility"
# A% S- ?, e- e+ K

2 Z* Q! P/ d; i: {1 U$ Zset-plot-x-range 0 xmax

- F" w, E/ m. j3 P. u4 L, q1 J# W8 W' e8 Y3 Y' i
set-plot-y-range 0.0 ymax
7 S- B% I4 W9 \
end
% V& k8 t. q1 i4 T( V) Y  y) }1 O0 i2 d8 r
to do-plots! W+ f, R; Z# U. f. X; o
set-current-plot "Trends-of-Local-reputation"
( P4 }* a, E5 ~# O( {+ }set-current-plot-pen "Honest service"
5 Z. W2 s* {3 w, v1 }8 t4 R6 C/ yend' J- B& X$ z' u# U1 t, @2 `1 t

% d- w  \' I, j; S5 b$ }: u# d) C[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
; y* Q1 Q1 P$ N) E+ u4 ?' o5 M1 \; N4 T6 R3 g3 J" c
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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