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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:
6 I- G6 x' u% q0 tto do-business
2 [( I* W( B5 i% P rt random 360
' K. {. ^* I4 K( f fd 1! u' R+ i* f; R
ifelse(other turtles-here != nobody)[
3 o5 n" p. D  l0 c  q   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.
6 X7 H$ k4 U$ `1 ]3 T0 g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 ^6 `# J& D+ G1 e' Q+ ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ N4 N) X7 M( t2 o   set [trade-record-one-len] of self length [trade-record-one] of self
% \+ V& ]0 N. f9 H0 s" Y  g   set trade-record-current( list (timer) (random money-upper-limit))2 y2 T$ @7 p/ [+ E' B

5 G, p! O7 q7 a- a+ |8 o, Q问题的提示如下:5 f; B/ H4 ^; Y: r2 {
- x" O& `7 U3 w9 y: }
error while turtle 50 running OF in procedure DO-BUSINESS
9 Z, F. w( V) ]) O6 \% n+ X  called by procedure GO* D) `' c- C8 O0 K' q! u, F
OF expected input to be a turtle agentset or turtle but got NOBODY instead." P. ?$ V9 w  j) c( C
(halted running of go)
6 D7 G9 m- E, D% I7 B( p' b2 V6 B( Z
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~~( x# k' e2 `6 E$ B# f7 A1 e
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( |) {6 {2 y# w- P" y% x
globals[0 u7 m8 |6 L  j4 ?% ?
xmax
/ s. f3 G' W  g" k! dymax
# Q4 W' F7 }5 f! |, Eglobal-reputation-list
* K! C; r6 I" ~$ ^: w- ?* L# ^2 ?+ ~3 B9 i8 V* S. L0 h: `  s
;;
每一个turtle的全局声誉都存在此LIST
. T. d+ \) M  V* F$ n) tcredibility-list
/ G: e' x6 O% J" m% k;;
每一个turtle的评价可信度7 b" l+ w: K. {
honest-service1 t( o( P: E- I4 {
unhonest-service9 k  L8 M! `. `7 A
oscillation2 t3 m- P# L6 k1 A. |( H1 u' a1 b
rand-dynamic
0 E: V, t' \" M+ s' _$ h+ t0 z]2 D3 @5 j2 i( y' j' d+ d: }  s
4 I; q; z  H" p' N5 S8 {; A5 z
turtles-own[2 g& H4 J- G) A  O
trade-record-all3 l3 {* D! B8 v1 t; D: W
;;a list of lists,
trade-record-one组成0 x' L- e6 r9 E* j
trade-record-one
8 X3 w9 g) [4 }3 s$ a" u: f;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 y/ R9 o1 }; ]( Q' c8 Q  V
! c+ K% v' @8 e0 L- H) g
;;[
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]]
9 C- h) o' L4 b6 A/ m7 ~, Ztrade-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]( }! e5 u, U! v8 |1 L3 @! k
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list0 N" m& c, e9 s4 m" K7 B2 C: c* U
neighbor-total
% }3 H5 z6 H5 x* }& p4 P;;
记录该turtle的邻居节点的数目2 ~! w# P0 e% `/ u( r
trade-time
5 }5 i# ?; [1 }9 L;;
当前发生交易的turtle的交易时间
" s, E+ L% F: e* I. tappraise-give- M! e) A$ ^- C6 x% ?) ^" W/ M: g) h
;;
当前发生交易时给出的评价
* R7 K( B; C  Bappraise-receive" r/ V  C9 T  [1 K) E; M- w
;;
当前发生交易时收到的评价
' e0 H- ?5 l) g/ |appraise-time
/ J( y; j6 C1 b( |% R9 ];;
当前发生交易时的评价时间/ `4 B% O0 Q" u( w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  F- Q, M" t* @  J  Ktrade-times-total% P9 b4 N! ]% ~# O
;;
与当前turtle的交易总次数
# P+ Z. G" Y3 l$ ^trade-money-total
( |2 `, y$ Q" G) o;;
与当前turtle的交易总金额# G1 \/ u' w+ s- ]
local-reputation. q& z2 \9 y, m6 _. l0 K
global-reputation
6 t4 p; s4 E2 kcredibility8 h3 g# J5 @% n2 a
;;
评价可信度,每次交易后都需要更新
/ \) V+ m+ n2 \* [" Ocredibility-all
; n( A, ^4 `6 E9 [0 a( ]4 [6 a- y;;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! X: `6 K1 \% e7 D
6 m9 X( b* M8 }( ^# T
;;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+ s3 R: o3 ]" M5 V7 F$ z
credibility-one
1 v& \" v6 Q* I7 q;;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. w. j% D# B6 l8 L$ j$ f
global-proportion3 X6 [  C8 n5 U; ~) `# {: D
customer) d& [4 @6 x/ p9 m) V  e2 ?
customer-no
5 b. n. L2 b2 E# u, U% vtrust-ok1 ]& J* J3 S# N% e& [
trade-record-one-len;;trade-record-one的长度  X6 |$ n6 Z3 G+ c
]
; u  @% j* S9 l' u! u3 N& C* ?9 }  T9 U- V
;;setup procedure
- w: V  G( z2 F5 D# M
5 |2 J  @% V# R. d; d7 D* oto setup
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2 W* I: D8 X7 I+ _( ^ca
- U, e# k6 F8 b; H1 v& r
/ [' g/ I0 G1 J6 N8 y8 N
initialize-settings

6 m* h& d2 Q" g- P1 |1 X7 v, e
2 J! m: y! u; k1 Z5 Ccrt people [setup-turtles]

& m3 X0 I) ^* U  B+ |9 |0 ^5 Z7 m. P8 y  H
reset-timer
: C0 z2 [0 D  V0 w5 }7 c
& s$ n4 x" t: ]0 s
poll-class

! h. \9 J- f+ i
% z3 [% E( a" p' p2 Hsetup-plots

, s+ F* P5 B9 ^- @5 J& `
& L7 G: ^$ @! R! Q- ~" tdo-plots

. `; z3 y1 c2 r& i1 ]+ m7 ?  pend2 G( y6 ?7 z( X7 z( G6 Q
: A, }, ~( F: K9 W& |1 k3 R& _7 _* Y
to initialize-settings
7 `8 X& `  a, ?/ d9 W
  D# B5 l6 H* E& c9 `$ F# nset global-reputation-list []
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set credibility-list n-values people [0.5]
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set honest-service 0
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set unhonest-service 0

/ v0 O6 P. i+ ^5 j/ s3 [! C
7 ~* Z* Q: L- Iset oscillation 0
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5 x: o; K7 Q  r  `5 U6 W! z6 E7 A
set rand-dynamic 0
- I) W" @4 V. ~
end
, L9 n+ n3 G, R$ w# O* ~+ ]+ \* A) R$ S2 J+ G1 G; n
to setup-turtles : S$ v# H  {# Z: d
set shape "person", z' w4 T8 }8 ?9 s" Y
setxy random-xcor random-ycor$ `2 H+ v) \+ J( J' @2 \0 p
set trade-record-one []
8 |8 f5 a$ m6 z* G8 e% {

4 a9 }* O* I, u0 o- v+ I, e+ Kset trade-record-all n-values people [(list (? + 1) 0 0)]
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# i- f* i; L" F- P
set trade-record-current []8 M' N# D% M) u; D
set credibility-receive []( `1 u, D; N9 x6 o
set local-reputation 0.5
' h6 `3 N" P2 ?! E. {' l0 M+ p: Hset neighbor-total 0' J; @: l5 S! I* P# s! K5 M$ b
set trade-times-total 0
( x1 Q' _, {* e# P+ C, tset trade-money-total 0
. a: \4 Q( A  z# Y  y+ o- pset customer nobody
' a: p+ I6 ^3 D: ]. k6 Oset credibility-all n-values people [creat-credibility]5 O# ^6 M2 f/ P" a! U; i
set credibility n-values people [-1]
/ g5 v- z% O2 N% b" C9 l$ b/ |/ J! g$ wget-color2 V8 y7 [/ f+ `* k! I' t- I
9 y6 C# }7 X0 h
end
; O& K" b2 F& j
# y. ^, c5 J# w1 H2 X1 u+ Q9 ]to-report creat-credibility
0 g1 u) Y9 V  f: w( |$ Greport n-values people [0.5]4 T1 f. Y, F# j5 a# _% [
end- \* z; W; s! ]7 V5 {9 d
7 V7 [+ q# u3 l- ]; Q
to setup-plots: [9 ~8 @5 }, }0 M0 B* M3 R
, U. f4 e) e* b  L2 U
set xmax 30

! _) L4 t. B: m; E( W3 p9 K8 ]8 I- m% a. R! {9 [
set ymax 1.0
0 s& d& I+ Q2 Z* B

, o) R! K7 T4 \+ _- ^clear-all-plots
9 K3 d+ M# W/ N$ _/ ?) d0 n3 I
" d+ P1 j+ R. m; N
setup-plot1
4 N* e5 E8 \- r6 g/ c7 ?

' r+ p. ~! |. l4 b3 `6 O% Usetup-plot2
/ I7 S" ?5 O9 I" Y

6 c$ S0 D  E# K' dsetup-plot3

" T+ F5 N, j( W0 b# jend7 i0 D; L) z) k! d" a) A* B  K

# X( S, ]; @2 c) \* |;;run time procedures
- p7 X$ q8 N% S$ n' A" j0 O$ {/ c+ }! |& d2 e8 k
to go
) E* `5 x- u( O4 c+ H7 u
8 j3 [* |9 S' y' V+ rask turtles [do-business]

, O) T8 d+ `) `- J! Z+ Eend
. d) X4 H: v: u: V6 d+ p* S$ Z# ?- y# ~) U& z
to do-business
5 M1 n' u+ d7 [$ d# Q& o8 _8 D
. E9 y! w3 X" i$ k, [( c3 u! b* k

. K4 V2 t, t3 _' H* _rt random 360

1 b( i+ g' Q5 U$ b- s6 V3 i
# p" i  c  v9 f7 efd 1
9 F: z  x& f# ]8 P! z' [- R1 @5 W

  P# i: v* g) t. [ifelse(other turtles-here != nobody)[

) m2 S) p" ~) ~& Q! f) u
( |& b4 W6 l: Q: L! p( Z+ aset customer one-of other turtles-here
1 C/ s3 U8 {  {2 m
' F+ Z/ N. z3 G! [$ Z+ B1 }9 a
;; set [customer] of customer myself

9 i& l4 e# b: {" n  u. B
) U, [; D- E$ W7 o1 \( Aset [trade-record-one] of self item (([who] of customer) - 1)( _; f- `  l7 \5 W) L% B; j- N3 h
[trade-record-all]of self
! P  B6 e9 l' e' b; d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 r7 ], v/ ?! o4 A  n! G" N

7 ~- e6 v* Y7 Fset [trade-record-one] of customer item (([who] of self) - 1)
# A: _% _+ T- n4 t8 `' {: A! t- t[trade-record-all]of customer

5 Y3 Y* k) C9 K+ _  e9 ^7 b* D% U0 z- Z
set [trade-record-one-len] of self length [trade-record-one] of self
* g+ C4 T2 Q) y# k! n7 b8 Y$ K
; ]3 @+ D- o# }% s
set trade-record-current( list (timer) (random money-upper-limit))

# {, h- H6 q& i
! w' f; M0 n" ?ask self [do-trust]1 C! i9 k/ R* l
;;
先求ij的信任度
) z2 D4 h5 u6 B7 G, [3 i" R4 u8 t2 O
if ([trust-ok] of self)
) U7 \7 _( k6 J; j0 l+ }7 T;;
根据ij的信任度来决定是否与j进行交易[! Z: |- Q" X3 G" h  ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. m- O6 Y, c' X3 g

6 V2 `. i9 K" p1 f0 W4 c  Q) o( m4 H[
/ K8 S9 @. l" a( V6 k- X' o

+ @& B. u. M2 D4 \+ T" {do-trade

) @$ V3 h( \; H
9 s8 h  u5 w' g( W+ \update-credibility-ijl
6 f; R4 o1 C  q4 X# V! A# C+ d
6 `2 m; y3 }' _# t
update-credibility-list
0 q% ?( k. n- m0 p9 X
5 c2 j8 }& M: G2 t# W. m
$ r$ l( S( Z# J$ k8 t
update-global-reputation-list

' a0 t  Q; a7 ~( f/ m6 |
9 p( c- h, V& j: k3 }poll-class

! z) v3 ^4 F* `5 F5 P3 n
) X8 {1 ~. Q+ p* K$ vget-color

- A: U0 d: o* B  w9 V% j& O4 P5 _- q! T
]]
1 X1 B* c' p# c% D% G3 X7 H
% N5 `4 y- ^* Y" F: [) k;;
如果所得的信任度满足条件,则进行交易
) {3 G5 h% F: W; H$ E8 N) B9 i$ W5 t7 x6 l
[

7 S/ I- x6 r, }$ T0 Q' M. I$ c& b% K! B1 ?, \
rt random 360

: L: ~: u! N1 o2 j, [& e  w5 }, Y) T+ b0 ]7 r, D0 A  e. l2 Y8 f
fd 1

) T* [  |+ V6 U2 H8 S. h, x  [
+ @9 p- n) m" J7 O: K1 d4 d& G: R]

& \7 N, b" U7 c9 ?) o# F/ @
6 B2 N* P- W6 ]end

% @2 A! Y' [3 m0 b0 _2 F0 d
5 Z  l2 U% k# d9 Bto do-trust % H) ?' N) W! [' V" b( o4 p! d* _" _, y
set trust-ok False
. Z( U! D; D5 g- [7 H4 c  c, G2 q, X$ h7 ]

$ A/ v6 z+ M) I% {- ?9 dlet max-trade-times 0
- |; j1 ?% B; E. z6 ]; u* Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% q' O# c# z/ \2 L' S! l3 K+ {: u( `
let max-trade-money 01 ?3 t0 m& o, T; N& q0 r
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 X8 P' s: E# j5 _: E' u  k. _1 i% zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( n% a$ a& D7 j* H6 Z; Z5 ^! M
' C- }) N5 B  j/ |" H. t
: A. U' N& A  @
get-global-proportion1 x) u4 a5 Z# t) `  b
let trust-value4 x1 D+ h0 G7 k4 u3 K: \" j
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)
' g4 Y( @$ K+ T0 B7 A8 D
if(trust-value > trade-trust-value)
1 Q( Z* l) C* z" ^[set trust-ok true]
( s7 L( B' {3 u1 t- r- e- eend; q: x8 r3 h# o' H7 E6 y1 j
, q; D" T9 T! f) I) V
to get-global-proportion
; F* ~6 S4 X. \# i* xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); d4 P! s5 J. J& w! Q2 a1 {
[set global-proportion 0]
, L9 M4 A* E) v" ~3 i; G[let i 0* h! N' f9 L& k, t7 r& T7 c. a
let sum-money 0  u; h$ b+ d6 W4 {! M; I, T4 D7 q! D
while[ i < people]
) m! `4 q4 ?3 Y; I+ L- i/ ?' H[
" N& d7 k5 N% U2 o. \% [2 @; lif( length (item i
9 c" v8 W+ D" q[trade-record-all] of customer) > 3 )
& w, Q( H% n. O- V. y: {
[3 T/ `) [1 P4 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ R: G" ^( ?8 s1 V5 D
]
6 F1 `$ I: h: R% `% g* o3 g]
4 |- }& p$ n2 U( V& ulet j 0
& B" X- D  B5 @3 o/ \1 vlet note 0
- [# ?6 t( B7 o$ |8 r9 xwhile[ j < people]
# F! n2 Q. R; @) V. K[/ W- ~$ g' B2 c1 s+ ]8 O& h  @
if( length (item i
3 d/ j) Y5 B; t: P& U[trade-record-all] of customer) > 3 )
7 o. E' h& T2 E
[; x! i9 l2 y9 \6 a3 Y6 ~  U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* f; U# W: \% ?4 E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ ?$ f1 G& k, N; D. Z9 v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 B3 j1 B: g2 j7 _: w]
  d) [1 X4 a6 m# _6 f]( ~  I0 G! M2 ?3 N9 \% L2 W' |
set global-proportion note
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end
0 ~9 @) J! A0 V/ G- I9 n' T3 q! E; y4 {2 K/ ]6 v' f1 b) x+ O
to do-trade
* R0 c- \) |% p5 S# @;;
这个过程实际上是给双方作出评价的过程
- S1 y' }+ P, {$ k$ W$ Y. `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 V5 l" j8 L; \9 F1 M$ S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' b1 g  P( {  |& T1 v; i( K1 S8 E
set trade-record-current lput(timer) trade-record-current6 b7 p1 T$ W* i- l" ]
;;
评价时间% {! r+ \" F  y2 g6 H
ask myself [" q& k; A! v& `6 s- ^6 h
update-local-reputation2 z8 M7 E: |' o, b5 E- c
set trade-record-current lput([local-reputation] of myself) trade-record-current
( X" _+ T6 ]5 o2 \0 T3 g]
6 X: N& g, g4 K/ ~% ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% O5 {5 Z; {. h2 ~* i
;;
将此次交易的记录加入到trade-record-one
0 K! m% d" V! gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 A& T3 u1 w4 W# T2 a, f2 E
let note (item 2 trade-record-current ); J$ T6 i5 ^; f" W* i0 L
set trade-record-current
+ ?  F$ G+ L- v+ Q(replace-item 2 trade-record-current (item 3 trade-record-current))

( p7 ^/ M5 |4 D  \' P4 c6 O; Fset trade-record-current* h  ]1 I  N$ P
(replace-item 3 trade-record-current note)8 O6 ]" t6 Y( x6 d. W* `
5 _; L' }) S+ |* d4 h
& n2 d4 `' z; g# w# |0 k0 C
ask customer [$ O: a4 R2 o8 u, {, X% e
update-local-reputation+ j& r( F2 }, g) u, X1 y: w
set trade-record-current
, Z) s$ f% m. w) u* W5 U(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
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]
2 o1 c# o" |9 v9 k4 B0 Q2 g. ^0 t& ]
' d0 W( u; ]3 Q; _* \" i
# F1 D5 G. r* _. M, L- ?1 H
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* l5 ~$ i5 H3 \' ~7 H5 J, m

/ F. S8 u; G( i( _6 }! |  Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  O. o3 J" R& E
;;
将此次交易的记录加入到customertrade-record-all
: u7 W0 o* e/ Q* ?# mend  o" B  j* p% @0 i' f

& J- x1 J0 L5 n2 I% [to update-local-reputation! |' D+ M! }  J( g
set [trade-record-one-len] of myself length [trade-record-one] of myself; ]: d$ Q, y  {6 C' w. L

# B8 Y0 Y  C& q" B
% m4 M# M0 J$ h7 V; h;;if [trade-record-one-len] of myself > 3

7 n0 q/ \0 A2 c' i+ n- Tupdate-neighbor-total
+ R4 G- S; {3 a6 R;;
更新邻居节点的数目,在此进行7 `+ B1 i( y8 C) j5 e7 f
let i 3  }4 i7 J8 ]. P/ |1 `) l
let sum-time 08 o, \4 B5 f0 j" Z0 P7 P1 [
while[i < [trade-record-one-len] of myself]4 a! C* A$ I( J- f
[  J- x" w( O* ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 y) e' B/ j$ k* @( ^( l8 tset i
" V& [; b2 |8 [* F+ ^7 }( i + 1)

5 u, m' E' M. D+ w9 F4 K]3 Y0 \& d) }) ^0 g9 ^3 K
let j 3: H& l" ]' L4 B' I
let sum-money 0
0 d( l% d* o9 _" O5 zwhile[j < [trade-record-one-len] of myself]0 w8 [4 o, s# f0 d9 c9 l1 B
[/ W" P& T+ b1 {* Q! Q; u
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)" @7 J0 Q  M0 i4 u8 U
set j
; p, a: K) I( }- P7 A( j + 1)
0 c( D& d2 P7 ~: G; [
]
" V9 D! l! l+ S9 wlet k 3
7 G! x. K7 h' x/ S1 elet power 0
. r. n6 A; |; Y( ~3 V) w* P8 E1 klet local 04 |6 a+ R$ n: }/ r0 _
while [k <[trade-record-one-len] of myself]
4 ]: {8 G8 i+ c: W[
  _% ~2 A& _8 q# O. jset 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) 5 z8 e$ T# d  s% ^5 j3 ^1 T# S9 D/ K
set k (k + 1)
8 K1 l6 E) d0 l: o% J]
) @9 ~/ Q9 q: t/ Z8 h: Q' rset [local-reputation] of myself (local)5 n$ r. B! {0 b  U
end0 E/ p0 M* y5 ]5 d( D# w+ y

; M6 h0 L  i* Z" @# sto update-neighbor-total% ?$ ]6 c) z9 I* t* z: U

4 g' O' Q! ^7 ]  W" Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ X/ @6 v6 y8 D2 ?* d! O# q2 p9 |4 f
9 b/ {1 [( R6 u& w
end
9 H7 k9 K" q5 r: K
; C2 t, p" b4 A1 l( T$ ]  kto update-credibility-ijl 4 Q4 {2 h4 I& l* l# o

6 T( w3 ?; d6 |7 s# d- n;;
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。
& _: K# e) Y+ K0 r7 ulet l 0
" P& T, c; \& [( S* mwhile[ l < people ]2 c+ y, x/ m5 U' g/ `. F; ?
;;
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: i! u9 S6 @1 w1 A5 V* i
[5 Z1 O6 g% |! o% M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); i) Z0 J6 `( o
if (trade-record-one-j-l-len > 3)
7 D% H0 g6 @6 p4 z/ ?! [  @* i5 S! v[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-one( l" X3 F' R: N- |( b8 c
let i 3
+ w! s% M/ y* K" y, ~let sum-time 0: e" w9 ?/ f% q5 C7 y- ^
while[i < trade-record-one-len]
' I/ i. b. l) I1 X" X3 G) C[  `$ j7 ^' y+ w% @" l% F1 o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% \5 q4 x$ a5 q; yset i' a8 f# e2 F+ W( l/ g; }7 [
( i + 1)
- I9 e; D2 f- o8 C. W
]# z5 k( _- B, L& Q$ p/ j
let credibility-i-j-l 06 @2 U( _2 V6 q! \1 Z  F
;;i
评价(jjl的评价)" t! c4 _- W! `. ^
let j 3
+ k3 {5 \$ g" Z# Z4 _let k 4
. t4 W9 o0 T. w+ E% T6 t7 L. \0 Awhile[j < trade-record-one-len]
+ m9 I, [5 n) h  _[
! y6 q) n/ z2 v! F4 N) U  ]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
! X$ s& U% M7 |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)  H/ ]3 l/ C6 X& p1 H( T% h; j6 V
set j
* o6 ]0 ?, c1 e7 [" w1 E+ Z( j + 1)

' E! i, j  b3 |: {7 t* ^]
* K3 W, o% P8 w- x: J+ \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 ))5 d- p; ~2 {8 K9 z. q0 q" o  b: Y
% O. e2 Z* w7 R/ ]
6 t  i, |( I, e$ X9 J* [' R7 n- R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 N" T; O$ u* M2 {;;
及时更新il的评价质量的评价" r1 X5 A  Q) t. [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: H9 J9 w+ ~3 f* Y0 G
set l (l + 1)
1 w/ k' z) U: v8 p  U& O]+ C# G; V1 Q) T; f$ t! J, z
end
+ x9 h# Z( V& w& H$ B* r% e" o3 N- u5 _/ \( b( O
to update-credibility-list' D6 H/ y% P8 A/ p! X
let i 0
1 S1 R1 W; @, @8 D6 Ywhile[i < people]
& j/ Q2 J$ L3 q( l[
& z5 m+ q- y: S2 s6 A5 rlet j 0" Z' @2 u- C  q# V1 }2 {
let note 0
# P; [; @2 Y: H# u3 a( x4 jlet k 0
% r  }- j) j$ f;;
计作出过评价的邻居节点的数目% C3 ?! D1 C4 J( ^
while[j < people]
8 m  I0 I2 g  Q& d* N[3 `. G; n1 U! X" T
if (item j( [credibility] of turtle (i + 1)) != -1)$ @) ?% X; S# f
;;
判断是否给本turtle的评价质量做出过评价的节点0 }. P& B5 h" A3 H  G% R
[set note (note + item j ([credibility]of turtle (i + 1)))5 ]9 T" ]- g1 k( Z- O/ C& P6 t% N/ {
;;*(exp (-(people - 2)))/(people - 2))]
0 j& B& F; q9 E' ^! j
set k (k + 1)
8 g( _$ O9 b1 s% _$ h9 H& _% p5 S]
% I6 \0 x7 ]" y5 N7 R3 [/ @0 \set j (j + 1)
( G: W" L9 y7 G2 @( v]" j9 c' v# }  R
set note (note *(exp (- (1 / k)))/ k)
- o- @3 c1 E; e9 mset credibility-list (replace-item i credibility-list note)
: a3 ?- \' s, xset i (i + 1)" m( L8 C% G% G5 `- X6 j# s9 N. _. M
]
$ n' R0 k5 ?" F% Dend
3 N3 S: D. [- S$ }$ z+ X# K5 T. p
6 A' n$ ?) M  j# r4 p  A+ xto update-global-reputation-list& R9 ?- H0 d! o' Q0 }$ R
let j 0
' B8 l; Z9 w1 c% a( j  mwhile[j < people], H: [' l- K) G( K& ]/ m2 ~5 v
[
7 e5 x/ Z; B! J) K6 ^2 D; ?let new 0  w; t1 F. f7 I/ {! e
;;
暂存新的一个全局声誉
8 y  g5 v# C) i1 Flet i 0
1 L9 ]8 o8 k  W2 Slet sum-money 02 c0 @. L* Q+ V4 R, |# g! F1 Z
let credibility-money 0
5 D+ n4 ]- s- g. n7 F, k8 U' i2 Qwhile [i < people]+ e5 N/ j3 c, ^: D. }+ L, J1 I6 [  i3 m
[
9 I0 e+ r5 V, R6 v  J9 R- f% [: M5 m1 xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 Y& a- R7 r/ o* e9 M7 u* i" n6 Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) C- x2 X  Z* x$ q7 F# J8 K' l/ Cset i (i + 1)0 ~! P; p9 i6 a5 r. y4 a& S
]& N8 f& [9 a- `) M! V( o! z
let k 01 ]" c* V3 B; ~* ~; n* g2 Z: e/ E
let new1 0
1 j9 }1 N7 W! e( Y( f2 E# {while [k < people]' ]" m: |; x2 f: v7 F, u
[
- q) ?) H. I. a) u8 P7 L3 }& {set 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)
! R- Q+ k; Q. n% ]( X) }set k (k + 1)& p3 q6 X% J+ L. {
]7 R) @5 l# ~) x  p( U) g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . q" n  k7 M5 d2 o
set global-reputation-list (replace-item j global-reputation-list new)# l* s5 C+ e; h. ?; T
set j (j + 1)
7 h' Y$ ^' {% Z]
9 a- s- E: _% P( N0 K! xend4 n% M$ U* x1 i1 d' l# G* d
! n1 }% z, G  @6 v/ I+ h
6 B5 b" w) ]0 S) B, i
  T9 |& q' l/ q" `
to get-color
# Q& R. ~. M1 z( |3 c6 W- f  d
set color blue

# u/ s$ D+ v1 `, Gend
6 B% j$ ?* `4 A4 \. ^9 j8 ~; \6 c! \% L) \& o
to poll-class
6 P$ m: q8 H9 Z# P, c: `end
* `  k( b9 y% ^  w  I! n' V9 ^: ?+ z0 `
to setup-plot1) ~7 H8 T, o& `# l6 w

! K2 P' {) x/ Iset-current-plot "Trends-of-Local-reputation"
) ~3 g# C, J8 |5 `8 F  a

4 I! M; @3 d4 Z7 fset-plot-x-range 0 xmax

. L/ k, _" \( O0 o, t; y6 y( |. a9 c* r: ?. S4 Q
set-plot-y-range 0.0 ymax

7 {  k, N8 w4 oend
! e. k6 S/ E3 u  Y9 U( n8 o- l7 ?7 L7 O  |! e7 F4 q
to setup-plot2; m3 F" ?1 k9 X+ v( X. c' u& E

9 [$ \, T0 j( Z# Tset-current-plot "Trends-of-global-reputation"

$ Q8 G! Y, n# q2 @$ s  o9 O6 U, s( u& O: |/ o0 b
set-plot-x-range 0 xmax

; t1 H- m% u. T2 X2 u: o3 s+ I9 d; U3 R: @
set-plot-y-range 0.0 ymax
8 q* {4 ]) L1 _7 X% }+ _' G. ^
end/ y) E* C5 u( b8 [$ I
& ~4 L* E( T# v* Q
to setup-plot3; |# p/ ^' j" d* v

- j9 A, d5 {# y) Kset-current-plot "Trends-of-credibility"
! Q1 B- }1 Z3 a7 F0 n
1 N( r& a, ?0 b8 W5 k
set-plot-x-range 0 xmax
3 P& Z6 |: [8 t3 r

0 b9 `  z' A2 b& W8 y- Rset-plot-y-range 0.0 ymax
1 j. \4 _  J, t! I9 K$ b$ ~
end
5 I3 R  f, v( g" \* F" N% r1 I  r; `4 G
to do-plots2 p; X( e1 ~. {$ X" K6 K
set-current-plot "Trends-of-Local-reputation"
/ Z1 {4 [; I# u0 \& B4 |set-current-plot-pen "Honest service"
, Z7 |( E  M' e2 V$ z# A4 Q9 f5 fend; Y9 g% f% a! a

. _7 j# Z; k% N3 B" K1 v0 k; B, d[ 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.8 U9 ?! U) ]2 ~; d/ N. h4 [8 x
$ X0 p3 ~& z2 g# V& i& n0 b. U
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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