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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:
* p* X6 I6 Z0 B- jto do-business
5 q; U# l0 Z! H( K4 l rt random 360% }; i7 ^3 S+ F: j1 J' M! O" ~1 W
fd 1; ~1 y9 W6 E1 Y" i
ifelse(other turtles-here != nobody)[
: R& J% ~% `- V% {   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.* r: Z& A$ g- t& A9 ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 ^1 N" P# y) _2 v$ \# z2 I: D$ W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. V) ^! {$ F% ^6 w6 l; B2 k
   set [trade-record-one-len] of self length [trade-record-one] of self5 M1 |# F3 H$ o) n
   set trade-record-current( list (timer) (random money-upper-limit))
) h. L6 I& T0 T4 E* d
2 v& m  z! J( ^* |2 b! |( ~/ r& P问题的提示如下:
, k2 O7 f+ D4 y  ^4 X/ Q6 q% h  @' w0 o
error while turtle 50 running OF in procedure DO-BUSINESS
2 C4 y- v( H- J8 m, Q9 J7 w/ n  called by procedure GO0 w- U2 g4 }* w$ t) u$ ^
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. P$ w. ~. S4 R
(halted running of go)$ {0 p. _6 M' B% T

) [: v0 d) n" t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~~
  D# N/ j4 n: \- v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; k) D% s+ V1 w/ e9 R
globals[0 N& i5 @& Y* u$ V& Q
xmax
- e2 b" t; x- X1 symax
; h8 A/ p8 ?8 z3 M$ tglobal-reputation-list7 [4 E5 P, p, ~0 G" N

& l: }$ M. v9 x$ T9 @9 d7 };;
每一个turtle的全局声誉都存在此LIST
/ X9 S9 L+ @" gcredibility-list
3 E* b: O* P4 j$ a  E;;
每一个turtle的评价可信度
2 Z" ?& n" z% R/ T( i: xhonest-service. m2 Z+ I  _& O' J' X
unhonest-service! z0 k6 [) z) n: N9 c- j' F7 ?
oscillation
8 L. a/ V& ?8 H) l) N/ krand-dynamic# N0 f+ j3 b$ h% U% I
]
( P. Y1 G* i; ?- ?+ V$ q
9 {; E2 ?  m2 ~turtles-own[2 n  N/ N3 }9 v6 G! y& g* v
trade-record-all
4 j. L  a2 l- ^2 h;;a list of lists,
trade-record-one组成% v3 b" Z9 l7 ]
trade-record-one& J) o$ {/ _2 f6 d4 `3 {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# V& o2 n6 T/ H5 I

# t8 ^0 @2 j. i& R6 I* e6 [;;[
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 a5 s3 R! H5 B4 w
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]8 A0 S- I# M$ O5 i* `* z* ~
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 y4 r" o3 p! r. r) q+ Z+ k
neighbor-total' Y' i( t/ i0 Z9 O) ?
;;
记录该turtle的邻居节点的数目) X% Z2 S6 l& P2 B' \3 K$ {
trade-time; F  Z8 e1 k/ Z! i/ F
;;
当前发生交易的turtle的交易时间
3 I/ w* a! F+ [+ Jappraise-give3 E& V4 \! @% J( N6 }. d  Q- l
;;
当前发生交易时给出的评价1 b+ R+ U5 [& U$ l0 ~# {8 [# J" q
appraise-receive! [9 _( H% T# v3 @% A% S1 _* l. E
;;
当前发生交易时收到的评价
4 ~2 t) L, F3 U. e/ Rappraise-time
. a3 Q( k( f: {( Y6 \3 @. |$ T7 d;;
当前发生交易时的评价时间# W( l7 t% E- L" ]' ~0 R. w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 H  r( D$ f& e, r, p  X
trade-times-total
" W$ E, m0 U/ g. f0 L7 |;;
与当前turtle的交易总次数$ {& a8 l% \( W; K6 |* \$ P: K
trade-money-total
" I$ o* }" F3 Z;;
与当前turtle的交易总金额
& I4 u0 c* r' g# ^3 g8 plocal-reputation4 d4 X1 K' v! z
global-reputation" R& v# j% ^, @' o7 {% a% `# c, a
credibility9 x. s' E* @* T( i
;;
评价可信度,每次交易后都需要更新# d0 R" b) A* W* N' m
credibility-all
' T# z) u* p& d! _9 S! h, 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
( ^8 P, b, `1 e6 ^. T6 Y8 g5 r3 {1 C3 m" r! w7 v7 [# O+ U4 @
;;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0.50 ?, U0 H7 Y+ C) |1 r% b
credibility-one
, T7 H. d0 T5 B- r' y3 f: K* r, E# P;;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people3 u' i9 O1 x, B0 B$ D: S2 W
global-proportion
/ Y. v: m, b& {customer
+ u1 U5 O* o6 t) R  E4 M. U8 Jcustomer-no
6 I$ I: w1 ^5 R# utrust-ok
4 O% T+ M5 a$ Q/ B, H- B! V  H$ {trade-record-one-len;;trade-record-one的长度3 E% I; E+ X3 a! p
]
: }; L5 l" O( w- o% {1 q/ x
+ ^  r. `% u+ y;;setup procedure
. Z& X% A" V1 E7 e& T( k; U2 m0 B# k5 W/ x5 M. r
to setup
/ r) p$ e0 B) J9 x9 M+ B. i7 F1 Z$ K- G7 n* {
ca

/ M6 R1 K% O- K( l
' }# x  k$ E5 e% l) linitialize-settings
" s" |* W! {( ^5 l' P9 [- s
: n' q+ I) J3 ?; K
crt people [setup-turtles]

+ A5 q4 B) u7 \! h; D; i  Y) a& o2 g1 M1 `2 {1 g# ~
reset-timer
6 k" _: o/ f9 I6 |0 N4 f/ J

5 i6 J# V! X: xpoll-class
! q- b# E4 |1 \1 G6 D4 T  ~3 ]

$ p( x: |( A# H7 S+ a0 dsetup-plots

% r. b5 r" y# t7 X  v7 Y8 q5 M% B5 m  j% S5 h; L1 [
do-plots

- O2 r  D( f& B$ a; b4 wend
3 q: T$ Z+ ]1 U3 O: [1 k7 C# _! \3 [6 h+ S6 m% B
to initialize-settings
1 W5 g* f6 H& g$ t- X- |5 T3 n4 K/ ^; U, _6 G# F
set global-reputation-list []
7 S! L# i; r5 Y3 j
5 l5 J0 x, e9 H3 o/ g
set credibility-list n-values people [0.5]
# M/ E# M% l$ \8 ]

, e* g6 ?5 h/ `1 j" H3 f6 n4 Wset honest-service 0

( p: ]  O" Z5 Q  y" y& R: f
9 {9 O* J# p* Q: Z) Cset unhonest-service 0
# [, e' ^- ~" O$ s; @2 z

" o1 N0 G! B# M7 I6 r( r' Gset oscillation 0

* i7 p9 n8 L- `2 P0 g5 |: p) B4 ~. M
# U% O0 j) P3 P6 l" Nset rand-dynamic 0
9 i2 G2 y8 _. K  X- u& [
end- g$ S. C% R7 H
( l" `+ x7 b9 I! L  v% p) o
to setup-turtles
" _- K' ~7 Y* @% p9 yset shape "person"
  o0 J/ I* o8 }4 ?3 y" `/ I! d. xsetxy random-xcor random-ycor) n0 B5 p0 v1 s8 [
set trade-record-one []
, [+ j* d( D3 k7 k) o
; S( y  i) g1 H8 W
set trade-record-all n-values people [(list (? + 1) 0 0)]
: J3 D* F' C: L
+ H5 S2 @9 O) s" B5 U% G
set trade-record-current []
* l/ ~5 I9 y$ dset credibility-receive []# {& v* @  _! u. `, [1 I0 u* n- M
set local-reputation 0.56 C$ q* G! j  v1 q7 W. Z' c+ ^
set neighbor-total 0
* p$ ]( e  C3 J! E7 P; k1 {1 ~set trade-times-total 0) X3 x$ ~& x6 o; x( F' }
set trade-money-total 0
0 W0 Q7 d! Z! V0 J2 R5 ~set customer nobody
3 ]" k9 t& j, C' }1 N( yset credibility-all n-values people [creat-credibility]
1 p6 v) y; O. Z; qset credibility n-values people [-1]
. k0 H3 y) u$ Q& Oget-color! H4 M' B. E- w9 a

3 B" q1 S; `% C% w0 q9 Kend
- K3 l. U2 L, [! N: E5 [& v* b% H
9 [, D7 R7 C5 M* g* D1 U8 fto-report creat-credibility
) _* b6 k; f& z7 \report n-values people [0.5]3 Q( q. d( l2 m) g( t4 C  w+ o
end$ K+ ]& Q: g) q6 j0 L
9 |& e  x& s4 K( e
to setup-plots/ `  }' t  q: P# `% z  A

( d6 H, W  V+ i. d- vset xmax 30
, l. G$ @% d/ O: @
" f' t* ~9 H6 G( R9 `7 B
set ymax 1.0
7 P. a" V4 T: k7 H* }7 u; s' }
3 c. f9 S0 C( c3 r8 v
clear-all-plots

0 p/ C! b5 X2 K' A9 M3 Y: X' a& a2 f+ q
setup-plot1

2 W" o0 d( n- G* T7 [5 B5 [
" M# z5 H. r- `) x2 [: lsetup-plot2
+ G# q: S9 t/ R, s3 t
" _  L6 r& R8 K  ?. t; x
setup-plot3
: J* l+ N! u0 e) n4 ]
end( q. A' Q3 d: F5 t
  x. {: K8 ?+ W0 k2 R5 u
;;run time procedures
# d. E. H5 [" B0 G4 \0 A* F! W0 p! @! g4 \# W6 F1 W8 H8 r
to go& M  \5 b) u5 k! F" L- p
8 X* G3 K% E9 k) o
ask turtles [do-business]
3 X, Q% v% g; [4 m) X+ E  ?
end1 N0 d, ]) v; i4 ]

1 e9 X4 H. o2 J. S. M5 a, S% I4 Ito do-business
1 P9 q' B; A# [8 o+ g* Y1 B
# k- V3 j2 e, Z( J5 C3 P% l4 W! n

  B6 f! q! y, X7 K  Srt random 360
, C9 m$ [. A1 ~; X* y
" m( l4 A9 }9 U# \/ U. X: p( J
fd 1
  e3 O7 }: G6 q* a) w, Y) c2 u

2 I: V: ^" C& d: I; M8 @1 vifelse(other turtles-here != nobody)[

- T0 A* R" @! \0 ~) M9 ?7 J4 Z3 n& m' ]; W1 [
set customer one-of other turtles-here
, X; s1 P4 S* }0 A1 S! T+ `/ x, q
% x: Z: S% m& t! {' `4 g
;; set [customer] of customer myself
( C" l# Y6 L- A( W! p& v) i

( y) Q; I- U6 u" V% Aset [trade-record-one] of self item (([who] of customer) - 1): U  C" A7 j! V& r0 v4 ^
[trade-record-all]of self
: r/ M3 C! r! n8 D1 P3 D4 g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! u% Y/ R: j6 @6 F
+ `" y( Z- m* q, aset [trade-record-one] of customer item (([who] of self) - 1)
* p. Z: x; [/ s: T; t* V% L0 c[trade-record-all]of customer
' i3 }, M8 @$ ~1 b" ]! u  r, K
- J+ B2 j- |9 Q3 b. Y+ P% n4 U6 h) Y
set [trade-record-one-len] of self length [trade-record-one] of self

( W- y) l: p9 `- P, y' w
) [( G. H7 p: F  l# p2 M% p- A9 u  b& }set trade-record-current( list (timer) (random money-upper-limit))
) W6 k$ m5 i+ R1 X! \2 a, |) S

) ~# _) |1 I! s' W' g) M( mask self [do-trust]. }8 ?: K- Q0 X! q# A+ Q
;;
先求ij的信任度
6 ]% N, _* Q8 Y1 r
7 D! @# g1 X/ f, F) P6 i! T' k4 Bif ([trust-ok] of self)
% I' R* \2 }* }+ Y;;
根据ij的信任度来决定是否与j进行交易[
( i; s' I8 V4 pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: B0 o1 ~, g- f4 N4 [% L+ c+ j% i! [) n, V$ e
[

7 U1 q2 S' L- L4 ]5 x! o: J. G; O
) a' Z6 I  P5 H5 S) q. y6 W* mdo-trade
7 F6 l. G  ~' ?
' B# D, ]: J0 B+ c: d+ [
update-credibility-ijl
& L7 k+ ^; t; v7 w2 e) b

& f$ y5 f4 Z; S" q" G  Fupdate-credibility-list; [* @0 V1 t; s5 `
, j2 X! K$ n/ w

/ t3 H1 u7 A( c0 |# Iupdate-global-reputation-list

3 D1 R' v; v5 @& K
7 w0 j( A6 F: D0 D- M" t4 Lpoll-class
- A; [$ _: [7 E9 R3 N; T! ^! D% }
9 I9 d% g$ \4 j
get-color

  Z7 ]+ @. U* H+ E3 v) X! k) n9 ~9 `% P: g4 P, `! @* d
]]
  Z) h7 q' R  D, t1 P- c4 P4 j# ]9 M/ B% V+ n; Y
;;
如果所得的信任度满足条件,则进行交易
. `9 U) n  X' C0 q
2 E# M6 `, ~5 N: D[
, r( n5 t8 O) a5 Q& r

# Z, z8 k3 v! x! Qrt random 360

$ l8 [: ~5 W, d0 y4 ~5 r5 D9 j* u# m4 W, V0 c; U
fd 1
# z* c# ~" N; T/ d' X- n

; P3 `6 I* H+ I2 x. r]
& J( J. i9 ~4 o; W0 a! k+ g1 A5 R" f

. y4 X1 y' Z/ t! e* y! G, W, p) pend

, r$ C) e) A/ w, z$ B6 p0 n5 g  ?' J) L+ T' y5 j
to do-trust ; q- o* m. X9 k$ `* Z: h
set trust-ok False+ c* U+ s: U* h1 ^' K) ^
+ X! B+ N+ i3 j5 Q/ D7 B

8 Q" j" F4 Y' U, @let max-trade-times 0( \7 k: K/ o: Z" [! A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% O0 U1 r- \7 j: T- u
let max-trade-money 0
1 n' x+ w( X/ z3 p9 H" }% h/ Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 G! F7 W' W2 r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- Z3 A8 a! }9 E- a8 `, d/ p% A. M! Q" n/ S+ Z! F" u
1 O& O8 k! p; g" o+ M, U
get-global-proportion
& O3 H: w  T, X, _let trust-value7 a" G* k; W7 F: U* G: h9 {
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)
1 M: w3 l: A: Z! c3 Y0 Y
if(trust-value > trade-trust-value)" b; G' E0 ], u+ C) n# E0 ^. V
[set trust-ok true]
) C0 v# O. D: f. c  Oend
. m) A7 j/ y( l' B) S: o0 h3 P
. k2 ^+ T& h2 V  Q% Q2 d; \( pto get-global-proportion7 q4 n6 j8 O1 w: J& P2 b* _( l2 O+ ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% u  ^* d5 _+ }6 H: D, X% D1 p; ?
[set global-proportion 0]
. E4 `1 l  N# b' |8 u! A; E7 ~[let i 0: u3 ]5 U6 t, x8 z" f3 ]4 U9 N& J
let sum-money 0; I8 l4 D. C6 P# a, O
while[ i < people]
) T$ K. r  Z" Z. w  ][
9 c; ^4 _2 n$ b7 ?/ \if( length (item i; L. @& V7 Z; k' R  D2 b% K
[trade-record-all] of customer) > 3 )
) O: B8 c/ q' E  o$ a
[# c& r  W/ _. j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. M& V* p( S4 h; }/ t3 i! K]) }$ E1 c/ Y; g+ P' y
]
- s- {9 Y2 U8 N- ?let j 0/ C) |/ m& w0 v
let note 0& D( w# V5 Y8 }1 }6 c6 E4 _& d
while[ j < people]
# x2 s8 l  ]7 {) [7 {8 t- J1 r* q, H[
4 U- n5 V; o6 H+ e+ }  O  dif( length (item i+ o6 W5 p5 v( C- h  |, i+ o& ]! S
[trade-record-all] of customer) > 3 )
* O! ]: ]. A: }; ]% [2 e( ], J) s) P
[8 s# Q5 H- X" h) u# R0 v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): Z% F4 m! |( k
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 @3 ]' `7 s+ U4 D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 ]$ W1 w) V! Z6 t0 Q' |# `5 x4 @1 k
]
0 X) I4 m- v4 o]
4 Q! ?, A2 W9 M' Cset global-proportion note
% {, L# ?8 C/ F: W], D& c* W7 w* ^" u" r5 P5 q
end) V% g+ [/ M' ?; W0 i4 H* e
4 I' j+ v3 b9 r. f6 T
to do-trade! X! ?* c" c% n) W4 `# R
;;
这个过程实际上是给双方作出评价的过程) }+ ?, V! K" l+ w/ ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ J: H5 o) N# W' N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 H$ r# m; A; A' }9 _
set trade-record-current lput(timer) trade-record-current
' o! F- R6 ]; o0 |;;
评价时间/ T* r& g: x/ j+ N5 _  a* T
ask myself [
  b$ a! o! l5 r. p/ M3 E, H  R4 e2 Bupdate-local-reputation: f1 l9 _3 f4 ], W- @7 R
set trade-record-current lput([local-reputation] of myself) trade-record-current' X! R3 w3 C2 M* U
]
# u5 f7 s) c. r: H/ Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* }/ G5 p: x2 P! D; S5 m. {, {
;;
将此次交易的记录加入到trade-record-one
/ {* A' P0 M4 {5 Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) D( z+ v! X' T: g, P/ t
let note (item 2 trade-record-current )( Z1 Z1 A* P$ I( R& `
set trade-record-current8 \9 H0 L# O) |2 ^4 _  a, E
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 u; W7 a7 c9 U7 w( ~
set trade-record-current
5 f& _( t1 ^! F(replace-item 3 trade-record-current note)
0 S) C+ R: L6 T0 V% n) N) ]6 f
8 Z1 l7 X' Z+ N0 A3 L& a% V+ a% l

5 ^" n' B! x# Cask customer [
; j! x: x- L# v8 E- ]update-local-reputation
7 g* [1 {" h4 J9 y5 _set trade-record-current$ o" q% ?# }7 A" |7 Y% e# a0 {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 |1 @$ H4 V4 v  t! ]]. U! d% [7 y9 d

8 [# M* q# l) P1 K" i

/ q( C- k: l9 G% T4 V3 |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 d+ s/ e  G$ n, |$ f  F' l

  ?* B) }8 q9 [8 p9 ^% T$ tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. s- N1 L/ ]+ G/ S;;
将此次交易的记录加入到customertrade-record-all% c( c+ N1 J# x- X& j1 D
end
% |% B8 I0 _& r% Y) y
% b: n. W* e; w* o( H  n$ @4 zto update-local-reputation, W: K, l* C- L, q& {1 H" ]  U
set [trade-record-one-len] of myself length [trade-record-one] of myself
, A  w4 ~, m1 f+ u' R" S  ^4 w% H! v( x  b* L

4 g. |. R$ l1 o; V/ K6 s& D( G;;if [trade-record-one-len] of myself > 3

$ [/ f) c5 E3 r8 Eupdate-neighbor-total, `* S& r- w5 V% I# V/ r) r5 G
;;
更新邻居节点的数目,在此进行) v$ Z* x# T, ~- }/ U. g, B3 D$ z
let i 3) P& |9 w5 C8 I4 D6 [
let sum-time 07 k% ]+ b4 o4 B1 I9 `4 K
while[i < [trade-record-one-len] of myself]
' D* v7 E  E3 [, y, E2 [0 a- A: i$ l& ][4 y5 H5 }; D) q) p8 S' ]% U0 L- x# @
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 c2 d  h0 I4 ^+ e3 y) r% h0 Q
set i1 \. a3 q2 g2 v9 `7 R
( i + 1)

: X' U  h1 L5 h5 @]
# \; ^# W" _+ e6 f+ ]) F7 glet j 3
. G- a0 Z# U) |$ Tlet sum-money 08 l$ N' C$ E, J# P4 M
while[j < [trade-record-one-len] of myself]4 G8 W8 v+ l4 l# T0 }! C  T* l! I
[
& ]/ x+ m7 D, G1 [8 Fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# k. Q0 E4 `2 A" Y2 B5 Vset j# `/ S" L. N  F4 ~. \
( j + 1)
. ?: P, W8 s& b6 \5 [, j
]# v2 q+ i3 C0 e0 a* }  a8 e
let k 31 K0 E$ k* G! E4 d& p/ K) r( D
let power 0, `& @$ S6 c% d- m. d( ^2 R
let local 0
1 V( t5 u7 a7 Uwhile [k <[trade-record-one-len] of myself]% _0 V( S4 o3 w& U. T
[
6 e6 {% v7 o! j% {% L9 o4 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) 9 y6 K8 w3 e% P  j% A2 h
set k (k + 1)
# s: n  ?2 x2 I6 d5 a+ {]% P* [- e9 u' r, U2 ?( R
set [local-reputation] of myself (local)
: `  Z% D9 S8 o) F) ^end4 d2 ^! c# p+ [/ @  L/ O

1 P& l5 j8 Q- V( A8 K1 Z+ U$ }to update-neighbor-total
' z# D' t8 }% [1 \
" F$ h7 l7 R# M5 vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, w0 |9 S) z: _. M/ d% s; n
$ S  N9 p( D( v$ n6 _5 }. s

5 g7 ~) F) y5 p* P# Rend0 P) m  t3 c% ^5 A0 b! n) p6 G: x
1 D# e& v- g$ ]) M- [& N! _2 a
to update-credibility-ijl
6 X' n/ G' g/ P" t6 o* s1 M( y5 j
;;
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。
# m! \# Z6 Y0 \% H& x& Flet l 0! |- V, m7 S; ^2 \
while[ l < people ]
; A& R( n2 z5 Z( J# b;;
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! ~9 [0 x3 k. q( V$ x& j
[
+ U, f( v: e( J& Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ o5 U9 C: c! o) ]! S! \4 E
if (trade-record-one-j-l-len > 3)- j& P& B! v0 o9 x1 q
[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! T$ X8 H5 @8 ~4 w
let i 3  K9 X: B+ [# C  l. D
let sum-time 0( l! C0 I9 Q. H5 I
while[i < trade-record-one-len]! u. c2 R/ {3 B  }) k
[& q" t( d. O: a/ g6 H. V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 T2 }& J. b' lset i
9 L  Q5 m% Z( Y$ d( i + 1)

  |) _6 T1 d* H8 k# b( X# [: O]
  C2 f3 J' U: Dlet credibility-i-j-l 03 d: e6 ]9 Y5 K- K7 o* S+ _
;;i
评价(jjl的评价)
2 g, {, Z$ i; C" \let j 3
+ c- D7 L5 s$ G2 R9 slet k 4: m+ B2 ?0 @& x) v$ Q
while[j < trade-record-one-len]
" Z$ o( \1 a  o0 Y1 |- u& _[- E2 j4 m4 ]1 j* c3 {9 d
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
; x9 c0 ~1 d# a+ W9 \$ B! o( J8 Rset 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)
4 P) U7 `) m) g( g! Kset j
: r% g; |( @/ d' f! W6 Y6 k( j + 1)

7 }1 o9 t1 _  |; R]
( X. Y1 h9 t: B! S& zset [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 ))
2 o/ Z0 D9 g  ^% E# n0 R1 e: W' R" a6 l* Z

/ S  Q8 @% a; E( x  N( Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), ~; _& d) X# y3 Q4 ^$ e
;;
及时更新il的评价质量的评价
2 L' I( {: F8 c# D* H3 q# uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ @. K2 i+ k, E6 |set l (l + 1)
/ p- [. J+ R1 U: {7 O0 A3 h4 ?' G0 g]
( e0 X& ]* |$ c# O+ Gend
& e: ]2 a! e' p. R  U- c8 F! n& G6 p
to update-credibility-list
: W/ Y7 k$ D: T. V: h/ U, Tlet i 0; O0 E2 C! X0 x. {/ K% |
while[i < people]% D8 J% O( j2 c! P4 l) t0 c
[0 j; v% J+ l. o) d
let j 0
( G0 p9 Q& }# x$ M& Nlet note 0
7 ~5 q; {+ x/ W/ hlet k 0
- Q, f' j2 N( o# n+ O;;
计作出过评价的邻居节点的数目% I* H  t" a; o6 d. f! [9 B2 X
while[j < people]
; P! e# l1 U9 \' C[& ^$ L. `0 i4 x0 F1 h4 `3 b. a* A
if (item j( [credibility] of turtle (i + 1)) != -1)
( q- x2 z# W# k+ P7 x* _  H;;
判断是否给本turtle的评价质量做出过评价的节点: f5 H! N* {; d1 N, D
[set note (note + item j ([credibility]of turtle (i + 1)))
3 V& M6 e. F* u3 R8 q- D;;*(exp (-(people - 2)))/(people - 2))]

+ W5 b- ?6 {: t8 a  [+ Sset k (k + 1)0 k6 |. H3 j+ z' p3 x0 K
]* ]. e9 y0 |5 N" s3 n
set j (j + 1). P: ^2 n/ A0 Z8 V7 R# A
]- H" v' G' Q) O; g5 g9 ^/ H
set note (note *(exp (- (1 / k)))/ k)7 r7 x5 j: m+ t" z. f  B7 S
set credibility-list (replace-item i credibility-list note)& U7 a+ t9 M" g3 M7 g
set i (i + 1)
# o) f/ x* |# I- T]
5 O; j9 R, m9 x# n  y, Bend$ g( ]& ^  W' \6 @

* O9 p/ H; R" H) p5 yto update-global-reputation-list/ o. \3 C' O! c
let j 0
6 x2 A+ C9 S& B: D6 P* Y4 Rwhile[j < people]! L! {" l8 S) o# x9 V) f
[0 G/ u# W& Y$ P$ x
let new 0
; B: |/ Y% r  W;;
暂存新的一个全局声誉
. q/ B/ f8 w0 p/ {7 c- Flet i 02 z6 N. j. _  M$ q% y$ O
let sum-money 0
5 d4 z4 b% W1 S1 `+ mlet credibility-money 05 e/ V' N1 N' z/ y" t, K
while [i < people]
5 U& ~8 T5 B- p; d[
0 D! {4 ~0 H7 _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' J. G- L$ F7 Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 w# F1 t( k% O, Y6 |* Qset i (i + 1)
; b2 Q1 `0 O* v]3 ]( j+ r" O1 E3 l) o  D6 M" F0 D
let k 0
5 R  l! t$ _& b% l2 Vlet new1 0
- w/ _# D7 r* bwhile [k < people]
% Y1 d' T4 l$ ?7 B8 Z[4 ]: k) v' Z$ t7 w
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)+ Y9 @. ~) _  K5 F, b
set k (k + 1)
; U1 ^! a& }$ M" L/ |]; t3 L( I) j, f3 z& l, ]$ q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 v( p# A* f# G4 hset global-reputation-list (replace-item j global-reputation-list new)$ m% {* @) Z1 W0 [( G( _/ z
set j (j + 1)' ^& ^, T. P4 e) v/ |5 S1 g) v; A2 k
]2 Q5 `. c/ x# f6 o
end$ O, m7 S% L7 A# ^5 Z; f

% M9 K: B. H# J% L/ d' J1 h" ]0 E/ W9 c6 M

: q6 v8 ?, D: \# o  u* y4 Lto get-color. t' _/ u0 k9 Z. b( l$ o, l2 }* T

# t4 E6 r5 t9 N  r1 R" Oset color blue

, l# W) v# I+ rend* {+ J8 K# u9 T% @% D
5 K* h* T: a' A0 h; C
to poll-class- p6 g+ z2 `9 P! O# k4 q
end
: `' [, ^- ^0 ^# V' ^3 b3 g# O7 A9 Z$ S3 q. w" {
to setup-plot1
& M" ]% ?! U2 Y' i' O$ i) u- F! F1 @- W
set-current-plot "Trends-of-Local-reputation"
4 h. w9 n( E, f% B7 e3 h

" i5 E* d7 A! m+ D% [) v$ @3 Lset-plot-x-range 0 xmax
: i" Y2 o+ Q7 T" S8 [% M3 F; \" p
" r9 W1 a* ^" f. M. S' I
set-plot-y-range 0.0 ymax
6 t% d$ l8 r* q; P
end
# C) q" o$ Q  e7 u
3 p2 d1 Y% e: n( b5 X. Uto setup-plot2
3 S# N' c8 D7 Y$ ?& k6 [' \5 T4 L0 k& b  m' Q
set-current-plot "Trends-of-global-reputation"
0 C, @" ~: O5 C% u7 H
6 ]6 u  `) n) ^* \- ]8 U2 _
set-plot-x-range 0 xmax

7 i5 {3 U" K8 ~! S1 u' `
3 x; c: z% n) x+ r/ Rset-plot-y-range 0.0 ymax

2 \1 T1 y6 j* I7 b7 I" kend
5 P; U# |; v0 l6 I3 ?
) g" h& x4 x" j: O# V) F# f7 j3 bto setup-plot3
. M+ _: E" F6 [& k6 V( D$ Q' S( Z* a% d+ N+ S6 [
set-current-plot "Trends-of-credibility"

* O( D5 i, g- @' b, D0 l( a& N3 G% H* @% h* O; k! |
set-plot-x-range 0 xmax

8 }# w5 {: o: `4 d
8 z, ]* O1 D1 N8 Eset-plot-y-range 0.0 ymax

/ k4 v( L$ z4 Q5 n' p$ J& |end$ a* Z3 B$ Y' }* t, w4 k& W! E/ g

5 C! O5 J1 Y0 C* m" j8 g) O4 Mto do-plots
- D, {6 P4 I% d2 v) Iset-current-plot "Trends-of-Local-reputation"
6 e% |- i: q5 K/ D& t* |set-current-plot-pen "Honest service"
! ], K9 i9 j4 ~- R7 yend
/ l6 S/ O1 M  O4 _* v4 e7 p& t0 L9 l4 I- ~
[ 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.( }- c2 z7 g( c5 b# s6 z4 f3 g% p. O+ |# R

+ y; m; A) f4 A4 i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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