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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:4 r: k* \" [3 `5 i
to do-business
2 [. \3 c6 {: R; B( u1 Q* y rt random 360
+ @  e/ f5 Y6 w( f fd 1
; j: s% c7 V6 X( w ifelse(other turtles-here != nobody)[& R2 {) z/ V" j! |; W
   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.
3 A# M5 M2 C$ N8 R( d7 J" d1 E7 I9 M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; G: F& x+ d' d. I! D- P3 B. j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* @) C3 U' [% X
   set [trade-record-one-len] of self length [trade-record-one] of self. M; d7 |, ~9 h" m4 r  X
   set trade-record-current( list (timer) (random money-upper-limit))
$ c  K7 }6 h! j. r: H* s* a8 |$ C1 @" p+ u/ U3 f/ ?8 R, T
问题的提示如下:
8 \8 k- W( V( |# y( l8 L2 _% Y# }0 Y) h/ q2 ^
error while turtle 50 running OF in procedure DO-BUSINESS8 T$ ]& Z" B. q) {: F
  called by procedure GO
+ u0 D: y0 G/ w) ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, Z% m6 n( }# e' |
(halted running of go)+ x  ?( j/ c0 x; u9 d, `

) o" y; U, f/ D, s; V9 q: _+ e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~~
. U9 w1 D1 e7 r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
. y* U1 C0 S5 i! yglobals[
& w8 b1 |" `6 Y* q9 C& S0 fxmax" I6 ?$ J. c4 M
ymax, X& G3 t. V$ @# o3 E2 |
global-reputation-list% y5 S" Z, n2 S, Z6 O* J0 B" N' @

, p2 R/ J# p" G& M1 O5 t  S) z9 d;;
每一个turtle的全局声誉都存在此LIST) S) G% O* f) W* L, R6 M* d. C
credibility-list9 u# ^3 E2 _' p5 b
;;
每一个turtle的评价可信度$ P1 i+ g1 t. u8 g  G
honest-service2 ^* @# `  [6 `9 i+ e5 B
unhonest-service
7 p; `; j- V: P4 ]; C8 poscillation2 I+ K8 O" i+ Q  l# }. p
rand-dynamic
# C: O$ C+ \7 M% G* |6 Q]5 u% _( h* L- u- D# P
2 ~) D: O0 _' v0 ^" h+ d2 `; x3 \
turtles-own[! M' Z& S8 F, I$ S# O  F; c
trade-record-all2 S0 w# r2 B) @  b& U: n# P+ `
;;a list of lists,
trade-record-one组成
9 m# `3 J' ^$ P1 k1 w" L/ z2 }' etrade-record-one
' l# [9 h' I) ?2 A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 K8 [+ ^# c7 d) d# `/ t0 W1 H- i7 s: l' _
;;[
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]], K  D( D( C8 d* p0 _
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]
2 _2 U; f$ g- M, n. Kcredibility-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list7 a: x2 O- N; T! d
neighbor-total0 u( Z2 n, o/ t1 ], P# s, r" ~
;;
记录该turtle的邻居节点的数目4 o1 ^* H" l: e; d5 o. @. x
trade-time. `! U) k$ j- R' q' d$ b
;;
当前发生交易的turtle的交易时间
; @" i5 Q1 ~5 qappraise-give# C3 w5 ~6 e* ~' l$ |
;;
当前发生交易时给出的评价2 x' Y. l, c6 Y. H
appraise-receive2 B0 k% X' C( X$ ]2 g; x
;;
当前发生交易时收到的评价2 [# ~# F( _+ @( `2 b$ O! g2 B
appraise-time
5 a+ c5 B1 x/ U; ~3 O;;
当前发生交易时的评价时间8 ]/ M. X9 v# D" e9 d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% N, ]2 E6 p4 I3 Z1 `trade-times-total
) t1 u3 ]8 k+ c0 U9 b;;
与当前turtle的交易总次数
0 I9 K+ J5 \3 x8 n) d1 a2 E/ }- a2 atrade-money-total* T4 k" N& e) s, k9 H
;;
与当前turtle的交易总金额
; v6 i- k& u; R8 _5 i: ]local-reputation
/ c8 T# a# U, ]0 }global-reputation
# H3 W/ g0 }/ F, m- \7 Gcredibility, R+ t- C5 \. @( _
;;
评价可信度,每次交易后都需要更新+ u( F4 f1 J- s% a: W
credibility-all6 Q5 }# b4 Y! E: o# Q
;;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/ C' u- G1 H6 ]2 y
4 K- X* }+ @" s8 U6 c
;;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0.54 b. A; r: k1 m2 w7 u) s- B
credibility-one" [! e- p" y7 B& l0 }: a0 a
;;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
- D7 O! B3 D% q1 yglobal-proportion
8 P7 K1 B" `# J8 a: ?customer
7 T, K) A$ g8 y- X+ `0 Ycustomer-no, q& i$ S! ]  `2 i' s. v( K
trust-ok
& i% r" T' n4 Y3 L7 S3 X, Strade-record-one-len;;trade-record-one的长度* Q' m9 R) ^8 u+ m
]
4 D/ h2 _# ?1 X: w6 m" n) c( F
4 ^' i) P% k1 W, P1 d$ h;;setup procedure
1 W$ k5 G/ T# E: v9 ~, b( R
; i# B$ H3 j: g, t* c  dto setup# Q5 ]7 a! F+ K
, y  l; u5 K& e0 _7 b7 h
ca

/ U. S0 [4 n7 K" `! N+ F2 u+ O( `; e/ U; }7 R
initialize-settings

( T% S  h4 e6 d8 N' ~' n* l6 k! Y# m1 l6 v
crt people [setup-turtles]

) ?3 o$ ]9 C! m. G# q% h
) C8 _% y/ f. jreset-timer

0 t+ F, t% P/ j5 ~
6 G( W" M* E, Q. H! Gpoll-class

% ]0 e4 c# V4 ]$ t7 {) k( @* t# T5 n" G0 @" ?# b& V" I
setup-plots

# g5 j; ?  t5 y  a+ D6 C
9 x+ O- G" P7 z% ^2 ]4 Ldo-plots

8 v1 }5 {$ r: D1 a& k/ C! L8 Mend
( F* l' q& W4 \. L
' h9 A$ H. V; uto initialize-settings. J% E4 \6 O, }; P

. p% {8 A' B- h7 _0 q5 U% B+ Aset global-reputation-list []
1 [+ ]; ^( X) O' n8 j

; M- Y% C" F6 y; {0 f* R: oset credibility-list n-values people [0.5]

* W/ |! n% w  f- T4 @7 L+ P3 o
' ^8 N% T( ^. e" p& v* Yset honest-service 0
$ c- Z) K/ U4 {) {
: }+ L  ^# f7 b) |3 z% ^+ v
set unhonest-service 0
  T4 H1 ^* `( J3 a* ^$ F' i4 I
1 Y" m; Q' \; B
set oscillation 0
/ F1 Y; W) _) c  H* S

' b% Z3 @5 ?, gset rand-dynamic 0

7 [) |  p( o8 \& c( u4 R* cend
  x- S2 u# B9 r! K( a6 j. w
/ ^7 x6 z' O% n* ?! }/ |to setup-turtles ( m2 ]7 K$ n  V# \, j( D! o* M
set shape "person"( C9 U2 h) n- O* d
setxy random-xcor random-ycor- g7 W& V3 V$ s; q
set trade-record-one []
& }5 p4 t% z# L) u$ |4 d: g, V

5 f$ |5 O0 r4 A$ rset trade-record-all n-values people [(list (? + 1) 0 0)] / }( B" l9 j- b, z
, x0 r/ b7 k# C
set trade-record-current []3 i3 F8 c$ `2 w0 F" r
set credibility-receive []
' `& o& M1 j$ [5 Y$ v3 x; gset local-reputation 0.5
1 I8 A0 a( r/ _: Eset neighbor-total 0# f7 {2 }" j6 J! d; }
set trade-times-total 0* i  g- {# U2 }1 l) T9 Q" g: `
set trade-money-total 0% k  y8 h$ o5 m# S1 D7 w0 ]
set customer nobody
/ G+ `0 {  G( g! i3 Z  J8 e: ~9 i6 }set credibility-all n-values people [creat-credibility]2 H1 N& b+ m4 E) h
set credibility n-values people [-1]2 e& J2 G! u( j
get-color
. z. }+ A9 m3 D# A1 l2 H0 i

. i/ E/ S' T# ~- q: `/ A5 Oend. k, U% D) r% t
0 }) a; x6 o1 y- U3 Z8 q
to-report creat-credibility3 ?5 Z4 P2 }6 }/ s8 ^
report n-values people [0.5]$ e3 i) R7 X; D: T& V: i. O
end( e. B! E) d# U/ `) ?# Q' n4 k2 D

  C' k6 v: ^0 l& ?" k3 Hto setup-plots: h' b( @" u  z0 r! w

( x' [2 w! D4 }8 r6 B& S- Aset xmax 30
0 z' ?* P6 y- m' _2 [4 h
% K" }6 @9 D& V8 q# k0 H
set ymax 1.0
( R1 s; k9 y  Y! D3 F: n. K

8 u7 X4 x% r( d) s! e2 S. Yclear-all-plots

) O+ O2 {5 q5 S7 U9 c/ N0 n$ r# a0 ^: ^( c" X: f) {
setup-plot1
% u% o8 I- Q- T
$ p! x' m7 A; q! N
setup-plot2
6 J! D1 B& d) T& T$ _: P
3 Q# Z* X3 B3 T  p
setup-plot3
' H4 a4 N# E- E( B% ?6 C; a
end
# o' |6 [( }* m0 `& Q4 }4 a# o) {3 n( v" u9 ?% v% w# A
;;run time procedures
: |1 `+ v. p! ?# x0 f$ T2 c1 W
to go
7 @2 Z4 u7 K1 n; u
. v, V5 j% b* ?ask turtles [do-business]
  I8 B9 `& q- t9 \2 |
end
& l. L0 F7 G0 }" m! G/ w3 a; X3 k; x- {! T7 q! o8 I* a9 D
to do-business ) B0 T2 }$ }+ X2 R2 O- W

0 B8 R0 P7 F5 v" T
5 Z$ L  c4 m: h, lrt random 360

7 l/ m! Q1 p; Q/ H- @3 z1 S1 r3 U% _5 d: v- \: K
fd 1
- Q3 |& M. T. l) N4 j- |' M1 R1 W
4 d' d  f5 E' O2 V- g
ifelse(other turtles-here != nobody)[
$ C& |) t# L$ d; t+ |

$ A' ]1 w: D% N9 s4 Oset customer one-of other turtles-here

5 C$ I3 c' Q  `. n" _6 U; o1 A5 R( z" j5 O  _/ H
;; set [customer] of customer myself

0 A. [+ G' p. s8 P/ w# _: Z5 n' B  K; a
set [trade-record-one] of self item (([who] of customer) - 1)
: {9 d' K: U% j( e0 q8 Y+ Q[trade-record-all]of self1 m- T. Q  i% E% Z! ^* F' d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 C  }3 o& `& {% `

3 v+ p* ^# t3 {, m/ Tset [trade-record-one] of customer item (([who] of self) - 1)2 Z$ N2 ~3 z; Y# l% r! W/ I0 q/ Q
[trade-record-all]of customer
) o. w  x9 a: a( t* Y
- u" l/ w8 t/ c% B4 b  k
set [trade-record-one-len] of self length [trade-record-one] of self
, I- M* r" k: j7 m
9 X' [; i+ s$ T
set trade-record-current( list (timer) (random money-upper-limit))

* g! j7 J' @: W5 A, q! C* |- U; s: |8 |6 o- B1 W: p1 }0 }
ask self [do-trust]( E. E. o4 d4 O! J$ M
;;
先求ij的信任度- b+ x: ^' |" P& N2 Q4 T

1 g" R, K. ^3 U- Kif ([trust-ok] of self)/ I6 c0 T. N0 a3 B3 P- B
;;
根据ij的信任度来决定是否与j进行交易[
; t. ]- v6 {  d/ K4 u5 iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* ?; W8 v4 S* p- ?+ i, w' x) v: r& d. j, h1 ?* `7 G
[

& Q$ }" K: G8 ^5 ?
6 e& X( ^1 ?$ ?( {do-trade

5 z5 R- D# O. ^- ~3 u/ c
: m. u6 u. [/ _$ P7 ~3 lupdate-credibility-ijl

" F5 ]' `; ^9 k- F- N
; v4 T+ }3 n' J' Tupdate-credibility-list) s1 o* y$ K1 W

( f7 I) i- l9 w  ]* K5 s5 K4 K9 h/ a" K2 v. h5 U4 n* x4 [
update-global-reputation-list

. J2 J/ n, `8 S5 I" {2 o
# s# v+ U0 O" ], @- [poll-class
2 F2 X5 ]3 o9 `. T# R

5 U9 U; q" M7 Xget-color

/ {5 g5 T- |& l- Q
6 k; Y* m) D% y6 }! Y]]
) ?' P/ ~& A& Q/ {$ j0 r- t2 k$ `8 {" m9 n3 O2 t, V% J
;;
如果所得的信任度满足条件,则进行交易; X: G  i' [* K8 k9 X5 K
- l- A1 a6 A" _2 ]# Z
[

, |) `2 g& L: U& m+ d# M9 ?& [8 N  X& K9 L6 \  ~
rt random 360

/ E7 [+ w( q! C8 T7 b. V8 L! `9 F/ ]( ^- l; i
fd 1
6 N" f+ k  l1 R

9 w$ S# T) _  L$ r3 a1 o# o* D]

! w0 }7 f  M1 m& N
: h7 {8 l- E8 \: X, Xend
2 K+ W3 N# H  v4 }% [; y/ r
: Y9 n0 `- _; f
to do-trust
( T& }$ [# k6 G1 Z' j! Hset trust-ok False5 }4 H6 M& R* J6 {+ i! H

/ ]: {8 O( ~& P3 c
6 M1 g' k. N: b7 e
let max-trade-times 0
% x1 z3 g) U4 R4 P1 _+ Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' q4 \: O- {4 ~5 Slet max-trade-money 0
% }2 w. ?" y  W4 [& N4 e7 l6 bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% F4 @" \5 M- q. B1 d& Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) i, _% B- r5 c' y' R
! B4 ]- E0 ?( T$ V7 A

- ?# M, a9 Z2 z" s  P4 |2 Nget-global-proportion8 n& Z, `/ g5 ^% Z! i2 Y, D
let trust-value( V7 K+ J, O; {# X6 q
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)

% n7 L! [# q/ f) }% h& Uif(trust-value > trade-trust-value)$ O" j" }6 Q" `
[set trust-ok true]3 E; T1 l$ q" [- p
end3 N8 @% y: {; c6 S, ]! _
: C4 L* K+ z$ [* X9 i1 E
to get-global-proportion
3 Q0 X9 H1 t( g) Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): Z, v3 p* p1 m& X) y, j0 _
[set global-proportion 0]
) c1 W. F7 S' F; H5 C[let i 0
  d4 F! N5 o8 v! Y# I# I# Jlet sum-money 0
. G+ L9 k5 S  L" G. Mwhile[ i < people]8 f7 A0 M. a) Y3 a( _& g% C
[: ]) t( S2 D( c2 H5 x
if( length (item i
$ }" }* K6 z- H' k5 g0 D[trade-record-all] of customer) > 3 )

& [7 L* f, w% z8 X# I$ G[6 w* F- E! F8 a0 O& O& g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ |5 b3 ?" ]( ~  I# f' a
]* f% y7 [; c4 V- l6 I. b/ n
]6 j" O& k( b0 ?: ~9 R
let j 0
/ K8 B7 w6 Z% N6 e0 Z9 rlet note 0
0 ^' t; T3 ^% ]4 \8 Z8 Fwhile[ j < people]- _6 E$ ]0 A" }- P0 L
[& ~' u1 P. h0 J" I& K# z
if( length (item i
7 O2 n% i; Y$ D' D2 f' a" @. W[trade-record-all] of customer) > 3 )
+ u$ E1 a0 z, C. B& n5 [. c( F- r
[3 i* B. _0 m6 l) v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 s9 ]: a6 J9 @0 y* o! c, C1 F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) d; H, A1 i! J  ?! V5 e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  r) Z  K9 k4 l6 j8 r], |& }  z  w9 w  H0 b+ R* y
]
/ w* i) S# y( S+ }+ `set global-proportion note$ f1 n5 @1 l6 M
]  K/ {0 n0 @/ L
end
& ~- Y' Y" N9 r: o/ ]" L3 z- h& c+ ?
to do-trade- N4 L( d7 v4 [/ J, P
;;
这个过程实际上是给双方作出评价的过程) X  n) [( }" y' j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 l. L5 G) L/ U" e0 v0 C* w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 K. g) ?. m- c8 u" J* m1 p0 c+ j/ Y
set trade-record-current lput(timer) trade-record-current
7 I9 u' u* H( t, p# {' D% {- _;;
评价时间7 _' [: g* t5 v* q7 @% F+ F
ask myself [# Z- B: L& H6 D2 E. ^2 l/ _3 _: u4 q/ B
update-local-reputation5 n6 c$ ?1 \* I2 U. C% y" T  b1 r  I: A
set trade-record-current lput([local-reputation] of myself) trade-record-current* e' g/ V4 \/ a5 P( m/ L
]: X% ^% T+ S4 |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! ?) Y+ B3 a8 w  w6 t0 h6 A% Q;;
将此次交易的记录加入到trade-record-one
" w/ b: t. W8 n9 M# A7 C# V) c* q9 kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& W8 H. P5 |" g6 G4 B
let note (item 2 trade-record-current )) G+ T: f' X( s9 [, h
set trade-record-current, t& z" d2 k- i, J
(replace-item 2 trade-record-current (item 3 trade-record-current))

* q2 h# S* t" d. T3 |# q) Dset trade-record-current
9 R& d5 h% l* p  K) w; t1 _(replace-item 3 trade-record-current note)
# G- C( p6 q* m, |4 v+ s) ?5 I: v2 r  [) u- V! y
  `8 e* C' g4 q+ \/ E
ask customer [
& q/ {7 A' F/ L1 [& vupdate-local-reputation
8 X% G0 H/ z& U: y, p3 _6 Uset trade-record-current
) r8 i9 T: |5 G* W1 k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( l9 }! B0 p3 T9 Y% I. _
]$ {" ~6 e% F1 i; E( Q$ W
7 p- z3 L/ ?5 X( K# v$ z( t
  J7 z* I# ~9 o  s* y! m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) n2 ~; {  r: t1 V  |+ M
2 I) P$ h1 s& t4 D" ~! g8 Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 |7 q& _; J1 P! ~. p7 F;;
将此次交易的记录加入到customertrade-record-all" e- S5 ~8 b! V' F8 H  K* h
end
: \# D/ z. ]) y7 t2 [5 i2 d0 s9 d$ q
' J' Q8 t& Z8 m' o# Dto update-local-reputation
/ o1 \4 d" g& Wset [trade-record-one-len] of myself length [trade-record-one] of myself
+ v. p) C9 e3 V& O0 q# t7 h6 T  u& P$ `( G' E, {
, o: @/ e3 P; m  `8 a! K
;;if [trade-record-one-len] of myself > 3

4 \- E& w1 T: V% v! e! eupdate-neighbor-total' Z) S3 R% [/ G9 K( e
;;
更新邻居节点的数目,在此进行
# z9 q$ T- ]9 y. j) p5 o$ [6 @let i 3- f2 c) f5 m2 S! g* t  t. `
let sum-time 0  g8 t" E8 G6 R+ {
while[i < [trade-record-one-len] of myself]1 ^/ L. ^  M4 }) j2 I) K9 L
[
6 B: z; d3 r9 z- |1 ?; N3 jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 P+ ^7 v: u2 X) o
set i
3 v3 q! q$ h! J- C6 R6 M( i + 1)
( F) t3 B! K  i3 {' \" n/ B
]
2 H- ~1 A/ z$ qlet j 38 T$ `9 E( l6 ?& v
let sum-money 0
, \: I  j; b# D; ?+ I0 Zwhile[j < [trade-record-one-len] of myself]
8 b( S5 R! k; I3 [( X3 j[
6 C2 e# T( `3 b3 vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): o1 h6 N6 T; o8 i: l# ^6 _, l
set j
3 W5 c. D: @: J9 L9 u( j + 1)

( |$ N( i) i! s; I4 Q" r* d% b]
' p, ?+ Z; _& i. y' Y2 H  Ylet k 3
( P3 x+ h- x/ v5 @! y7 Plet power 0
, E2 i7 D* C+ [0 h0 h: Zlet local 0* `1 u9 e7 u% s& n7 Y7 z) }) q' s9 F% U
while [k <[trade-record-one-len] of myself]7 Z5 j+ Z3 c) ?' `# {% O
[' Z, I% F8 V3 ~; D  `& B: i
set 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) * x+ {2 P% u* }3 z: W' K
set k (k + 1)" |" K) W" i3 Z
]4 v. |6 e7 x+ _# u
set [local-reputation] of myself (local)& H8 r! n2 G2 A% Q2 ]; t
end
3 K" V' j0 C5 i2 K  J5 Q0 v' k, q4 f: ^  L. r8 _3 P- C# H! b
to update-neighbor-total- `3 D$ o- G$ d- o% V- c
2 V3 O/ y2 z# a. }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) {+ ?  Q! Y& Y: v) H) l4 B+ C5 f& R

; d/ `8 ~3 d7 x1 A3 U: Q+ oend  Q5 i. c) C* D" b; {+ Q( S

8 N, a1 L# U, M( F2 i8 c6 Pto update-credibility-ijl 6 a- Y1 G6 x5 [

! U& R) E$ v+ e, Y' S8 Q: D;;
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。, m3 `. K  z0 D2 _4 \- ^5 W! q
let l 0
9 t$ J8 @; t9 i& Twhile[ l < people ]7 H0 y! B; Q5 `* v) ^- R9 l6 b, n
;;
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
8 p3 q2 M, g7 g$ O[- {( S" @2 }, I8 t) G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. g8 ^; K# X9 E' G! ~if (trade-record-one-j-l-len > 3)" x" w3 I& \+ W6 ]
[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
- \& j# {' i' ^7 _! ylet i 3
" S, J7 L/ k) u& L$ R$ b' v" Llet sum-time 0
% k; M0 I8 F( a1 Kwhile[i < trade-record-one-len]4 H1 N1 S, N7 }2 ^
[
- {! x' Q# ?  `1 H7 M' D' {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). H" s( C& r$ q% b& o5 W
set i
/ B6 k3 O3 x3 {& u/ \( i + 1)

- v, A# E0 H/ k' Y' |! F( ]( K]' z  Q0 K, I7 _- D2 Z. l
let credibility-i-j-l 0- L* v; ?* M% [: I
;;i
评价(jjl的评价)( d0 l8 p; q3 ^% h
let j 3
1 `+ G) k# I2 r6 V4 `let k 4$ |  m; B( j: _+ q* g. Z/ w% |
while[j < trade-record-one-len]/ p, `# p/ ^7 n" f$ Q2 @. f6 P7 w
[
- m/ q1 N' G, m- ^$ Uwhile [((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
8 E& K  s& }  Cset 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). b; X& k; M) z) l
set j
$ R- [2 V, h6 r3 |- N5 Z) S( j + 1)
. y5 l" ]' v1 P2 p( J
]6 o/ Z' a  f, O; U- z. G4 X
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 ))3 {. ^, W8 o0 A8 ^, v8 E

& v# n! n; e& l2 G2 r, O/ P
+ ?" S9 R3 O* h! J7 ^8 k" j: M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* R0 D1 h0 h# g$ x;;
及时更新il的评价质量的评价
. C/ ?! c. H- n. C5 J, H% H7 hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* x5 s/ C; s6 s' {5 ^1 d: G
set l (l + 1), T' ]* \* d( O7 ?2 t, p" j! @
]2 Y6 U( _; A# X
end
# k! ~8 g3 X; e4 [: b% v3 h
) L# `; k9 P8 b0 j1 s  bto update-credibility-list0 v; Y1 k$ P8 H+ }2 k7 N  V( f' |* U. W
let i 0: d" W5 M) [) P1 o
while[i < people]
8 d# [+ ]; C) y3 X6 y; I9 D[5 t/ d% P0 u4 F$ o9 C" c
let j 0# j3 b9 ?  A) z5 [8 f1 D
let note 00 j& x" Q9 h4 D) _; U- ?
let k 0
, c) ]: C; d6 B* y6 ]0 e* A;;
计作出过评价的邻居节点的数目) s; r' I2 b5 x7 J3 e  }, U
while[j < people]
  h: M. U9 j; l3 M  d* R4 L& C[
; U* @6 c6 O: H4 r  j' Xif (item j( [credibility] of turtle (i + 1)) != -1)
$ e7 w* d8 Q5 f+ M8 Y. W;;
判断是否给本turtle的评价质量做出过评价的节点; l8 G3 R" r/ y0 c# K8 G; S) F
[set note (note + item j ([credibility]of turtle (i + 1)))  R5 n7 e' x: E5 [, M
;;*(exp (-(people - 2)))/(people - 2))]
( m: V+ G) Y, ?5 V% s8 r6 j& w
set k (k + 1)% \3 W- X. i, j
]
5 Y. @8 i' W; I: M- {set j (j + 1)
# T$ V: H$ d% s; K* x& A]  I( i( P3 I. d5 V% t% a( W
set note (note *(exp (- (1 / k)))/ k), B6 I) s1 G- M
set credibility-list (replace-item i credibility-list note)
6 N. Q, c$ f* \! W/ h- e  Cset i (i + 1)  C7 U( Z6 c# n6 ~: d9 B; I
]. h" _' r. Y$ q) f% ?3 b- [6 p. C; C
end
6 S0 k, r* r, Y" s, O2 n: ^% f, b# N+ @: u- \( p
to update-global-reputation-list
; |# m7 O# c# k, q* Rlet j 0, v; w/ ]* w' x' Y" A
while[j < people]
' Z1 O( T9 J% J6 \9 {7 f9 \[0 M8 }& L% K, m, d9 u
let new 01 c, c' i. _) f3 {2 n
;;
暂存新的一个全局声誉
0 @8 c, L3 e- n6 b& x2 zlet i 0
* c6 U/ r* U; c3 {let sum-money 05 r, }7 y/ c1 k6 p4 t4 _$ u( O5 w
let credibility-money 0- d/ E0 `9 v, W) u$ v& ]. e) R- n
while [i < people]1 O  o: k% f! S3 ]# M$ M& e8 q
[
' t% O& A6 [% j$ G( ^' a: Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 [5 m. O$ M* Q; J8 [
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 R/ O' \$ O- T4 K0 @  G9 }- D, p9 y+ nset i (i + 1)
$ m) w: W) s% C9 K; \8 s( I) s]
6 L  ?5 ?6 @9 C; O; M* xlet k 0; d0 k  h) v1 u* f8 g# r
let new1 0* s+ u6 o5 D" o6 R1 e
while [k < people]
; o& q% n0 s9 Q* D# I/ `8 K9 W[
* u+ p7 i! Z" p1 k7 _/ v6 o/ ~/ Wset 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); Y6 `/ o! G4 T- r4 A7 F3 @
set k (k + 1)
6 h8 n0 v- R- n, n]
9 G7 N$ z% d+ l, A, `# W5 l& _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - R0 U2 w7 \0 x# j6 Z$ d
set global-reputation-list (replace-item j global-reputation-list new)  \. }; y* s" A1 g/ e
set j (j + 1)
6 Z6 w* T$ i9 C5 Q# e9 r3 t' W. m; ~]- @$ F5 A2 S9 L) Q4 z' s
end" \4 O2 M/ ~, H  P

& M2 \% T, e. Y
. d- V( X# X" r# N, ^' l( `8 J& f( F6 o6 R& Z+ r( d
to get-color
. _- q3 V9 x  [! R; B. k3 ?5 G% n/ g& p; y9 ^9 S  E$ I
set color blue
3 [% g/ k  y$ X6 c
end0 B# P" V5 D$ S8 e
: `/ c$ ?. ^3 C/ t' e
to poll-class( l2 T; e5 b" M+ [
end! O  q; b5 ?* b0 r
, [. Q% C- I) @1 Y, a
to setup-plot11 H9 L6 H/ H7 q0 g5 \

/ z+ c1 l5 E1 m$ E3 Q% o1 L& wset-current-plot "Trends-of-Local-reputation"

4 t9 }; {- b6 k" {, \& _$ t
- @* I5 [8 G' nset-plot-x-range 0 xmax
5 P2 d& ~" Y! f( e  q( z& F$ u

0 h7 j1 D, x/ {. sset-plot-y-range 0.0 ymax
( L2 i# j8 K4 z2 H) o, _
end
6 d5 L4 s  g/ K% A5 h9 h: W
. y* m% Z6 X% Rto setup-plot2
0 |/ T/ e& a2 c. o. p, d& ^
0 m$ j+ q; ]/ h$ j, A# f; L- H/ iset-current-plot "Trends-of-global-reputation"

, V% s& l8 O1 i% ~; P! g6 ]9 X, d* c
& M& C3 }5 A; x5 u% yset-plot-x-range 0 xmax
2 z0 y2 m( F/ w/ z8 c6 h
: ~/ @: p9 x; }/ `6 j: B+ U. a
set-plot-y-range 0.0 ymax

2 ]9 y0 r% d% ~/ K% ~% c- wend
( ]+ i' q/ \5 Y6 [5 b2 f. \! t
9 d! J2 q. I: x8 d8 j6 B- x& m! Bto setup-plot3; [8 d/ L3 T9 E" ]( ~; _  r) z

7 e& e+ H! o8 O3 L! E& M# c- jset-current-plot "Trends-of-credibility"
* E2 }9 b9 G) E! h/ w. g
. d8 W% q  }* L3 _
set-plot-x-range 0 xmax
' N3 V+ P( N& J1 k0 `5 u

: c! {# |) v$ F7 B; z! J& Uset-plot-y-range 0.0 ymax
0 ~+ R& G* e/ O6 P( e' d) b1 Q' W
end
6 o1 j% V4 V0 E. _( Y0 m  H" p, G# P! v7 I# f; W6 ^1 z
to do-plots9 }7 }1 M. k- t! f* N
set-current-plot "Trends-of-Local-reputation"
8 }" o, l( N1 V2 @- q+ `# o  eset-current-plot-pen "Honest service"' {! V, u9 U+ e6 N: f5 f
end
" _* i6 w7 h% Z9 o4 ~! v
5 m5 D! p4 @: M* r& _9 Z& n[ 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.
2 F) \/ s% ^- y4 p+ e5 f9 ]- w; R# R+ Y+ `
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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